RAM wiki - Blog speicher.de / PHS memory

Upgrade RAM from 8 to 16GB and beyond. Is the performance improvement noticeable with more RAM?

Julian Olschok — Mon, 26 Jan 2026 13:03:17 +0000

Introduction: When the PC starts to lag

Do you know this? You’re working focused on an Excel spreadsheet, have a few browser tabs open, maybe Outlook is running in the background, and suddenly the computer becomes sluggish. The mouse pointer stutters, programs take a long time to load, and the fan gets louder.

In many cases, the cause is not the processor but the RAM. Systems with 8GB RAM quickly reach their limits when multitasking.

The good news is that upgrading RAM from 8 to 16GB is one of the most effective and affordable ways to give a slow PC more power.

In some cases, it may even be advisable to add even more RAM to achieve a significant performance boost. We’ll show you how to find out if your device’s RAM can be expanded, how much memory you need, and how much your system supports.

What happens when there is too little RAM?

Before we get into practice, a quick look behind the scenes. RAM (Random Access Memory) serves as your computer’s short-term memory. All currently used programs and data are temporarily stored here so the processor can access them quickly.

If the RAM is insufficient, Windows uses the so-called page file, an area on the hard drive that acts as emergency memory. The problem: even modern SSDs are many times slower than RAM. The result is noticeable delays when switching programs, longer loading times, and an overall sluggish experience.

Why is it worth upgrading RAM?

A larger RAM ensures smoother performance. Programs start faster, multitasking runs more smoothly, browser tabs remain more stable, and loading times are reduced. Games or resource-intensive software such as image or video editing, virtualization, or 3D simulations benefit significantly from a performance boost with more RAM.

Systems with only 8GB or less gain especially in performance when upgraded to 16GB or 32GB. If there is too little RAM, the system constantly relies on the slower hard drive or SSD. The result: stuttering, long loading times, and sluggish programs.

It is important to note that RAM does not automatically increase CPU or graphics performance. However, it removes bottlenecks and allows the existing hardware to reach its full potential.

The following table shows the minimum recommended RAM sizes for different use cases.

Use Case	Recommended RAM Size	Expected Performance Gain
Office / Everyday	8 -> 16GB	+20 - 40% in multitasking
Gaming	16 -> 32GB	Shorter load times, more stable FPS
Video / Image Editing	16 -> 64GB	Significantly faster rendering
Virtualization / 3D	32 -> 128GB	Massive performance boost

How can I find out if I can upgrade my RAM?

Many users are unsure and ask themselves: Can I even upgrade my RAM? Which modules are compatible? What should I pay attention to, and can I install the memory myself without damaging my device?

The first step is to find out which RAM is currently installed and how many slots are occupied.

Determine the RAM modules suitable for your system

Method 1: The RAM module online search on phs-memory.com

On phs-memory.com you will find a well-maintained database of compatible RAM modules. Currently, more than 400,000 compatible RAM modules for almost all manufacturers and devices are listed.

Simply enter the name of your device in the search field on the homepage, e.g., Dell Inspiron 7569.

In seconds, our system shows you the RAM modules found for your device.

Simply click on the desired RAM size.

Note: If items are displayed here, you can assume that you can replace or upgrade the RAM. All shown RAM modules are guaranteed to be compatible with your device.

On the following page, you will see all information about your device on the right.

RAM Installed: The memory configuration with which the device was shipped.

Maximum RAM: The maximum memory size your device can be upgraded to. In many cases, the maximum possible RAM is higher than the manufacturer specifies. These RAM modules are marked with the overRAMing Project logo.

Memory Slots: Shows the number of RAM slots available in the device.

Method 2: RAMONA – The RAM online analysis from phs-memory.com

Don’t know the model name of your device or unsure? No problem!

Our RAMONA analysis program scans your system and finds the suitable RAM in seconds. Simply download RAMONA, run it, and purchase the compatible memory.

Download RAMONA for free here
Start RAMONA-de.exe with a double-click
Confirm security warnings, if necessary click on “More info” and then “Run anyway”
Display the compatible RAM
If the search was unsuccessful, you can easily send your memory request to one of our RAM experts
You will then receive a message with a link to the compatible RAM modules for your system

Method 3: Manual check in the operating system

This method only tells you which RAM is installed in your system.

Windows operating system:

Open the Task Manager by pressing [Ctrl] + [Alt] + [Del] simultaneously.

Navigate to Performance and then to Memory.

Here you can see:

Top-right, the installed total memory
How much RAM is currently used and how much is still available
The speed at which the RAM is running
How many slots the system has and which of them are occupied
Which form factor (SODIMM or UDIMM) the system uses

macOS operating system:

Apple menu -> About This Mac -> More Info… -> Memory ->

What does RAM upgradeability depend on?

Whether you can upgrade your RAM primarily depends on the motherboard in combination with the installed CPU. Both determine:

Which RAM generation is supported (DDR3, DDR4, DDR5)
Which RAM speeds are possible
How the modules should be installed
The maximum total RAM capacity

Note: phs-memory.com has already done this work for you. All RAM modules displayed on phs-memory.com for a manufacturer’s device have been checked and approved by the RAM experts at phs-memory.com. This minimizes the risk of purchasing incompatible or incorrect modules.

How to correctly install RAM

Familiarize yourself with the tips and the straightforward installation of your newly purchased RAM at phs-memory.com.

Here you can find the steps for SO-DIMM.

Here you can find the steps for UDIMM.

When should you upgrade?

Upgrade now if:

You regularly use 8+ tabs + Office + chat simultaneously
You notice that your computer becomes extremely slow or stutters during multitasking
Your notebook is 3–5 years old but still otherwise fast
You plan to use the system for another 3–5 years
Your RAM is already over 70% utilized

Expected performance boost from more RAM: 20–35% noticeable improvement

FAQ: Frequently Asked Questions About Performance Boost with More RAM

Can I mix different RAM brands?

Basically, yes, as long as the DDR generation, voltage, and form factor match. However, for the best stability and dual-channel performance, identical modules are recommended. A kit with two sticks is the safest choice.

Can I mix DDR3 and DDR4 RAM?

No, that is not possible. The memory modules are incompatible. DDR4 RAM does not fit into a DDR3 slot. The connector pins, dimensions, and memory sockets are different. You must always upgrade using modules of the same memory type.

My laptop has only one RAM slot – what now?

In this case, you need to replace the existing module with a larger one.

Which is faster, DDR4 at 2400 MHz or 3200 MHz?

DDR4-3200 is faster. In memory-intensive applications, the speed of the RAM becomes noticeably more important.

What happens if RAM that is too fast is installed?

This is not a problem. The installed processor controls the operating speed of the RAM modules. For example, if a 3200 MHz module is installed, the CPU automatically reduces the memory clock to the speed supported by the CPU, e.g., 2666 MHz.

Can modules with different clock speeds be mixed?

In this case, the CPU will always adjust the RAM clock speed so that all modules run at the speed of the slowest module.

Can too much RAM be harmful?

No, having too much RAM has no negative effects. The unused RAM remains available in the system.

Are there devices in which the RAM is not replaceable?

Yes, many Apple MacBooks and modern ultrabooks (especially from 2020 onwards) have soldered RAM. In these devices, the memory is soldered onto the motherboard and cannot be upgraded or replaced. These devices do not have a memory slot.

Search for your model on phs-memory.com. If no result is shown for your device, it is very likely not upgradeable!

Does installing RAM void my laptop’s warranty?

No. The statutory warranty is not affected and remains valid.

Will my system automatically become faster after a RAM upgrade?

Not necessarily. A noticeable performance boost can be expected if the existing RAM is already being used at around 70% by the system or active programs. In this case, installing more RAM is recommended and leads to a significant increase in performance.

Do I need to reinstall Windows after a RAM upgrade?

No, not at all. Replacing or installing an additional RAM module does not require reinstalling the operating system. Windows automatically detects the new capacity and will use the added RAM.

How long does RAM last?

Under normal use, practically unlimited (20+ years without issues). RAM is one of the most reliable PC components. Failures or defective RAM modules are extremely rare.

Is it better to buy two 8 GB modules or one 16 GB module?

Two 8 GB modules are often better. Using two identical RAM modules activates dual-channel mode. This can provide an approximate 5–10% performance increase in communication between the CPU and RAM, and it reduces the load on the memory controller.

With current CPUs, when modules of different sizes are installed, the memory controller may use flex-channel mode instead of dual-channel mode. In this case, the speed gain compared to dual-channel mode is smaller and significantly reduced.
More about this in the blog article Dual-Channel / Flex-Channel.

Can I damage my device when installing a RAM module?

No, damage from installing RAM is unlikely if you follow these steps:

Disconnect the device from power
For notebooks, remove the battery or, if this is not possible, unplug the battery connector from the motherboard
Use compatible RAM for installation
Do not apply force

RAM modules are passive components and do not have a power supply. They are designed so that a defective or incorrect module cannot cause damage. If the computer does not boot after installation, simply reinstall the old module. The system will work again.

Do I need to delete data from the RAM?

No, RAM is a temporary hardware component. This means that as soon as the power is cut off, all information in the RAM is automatically erased.

Is the RAM automatically recognized after installation?

In most cases, the RAM is automatically recognized. If not, check that the module is properly seated in the slot and perform a BIOS update.

How can I tell if my system uses DDR3, DDR4, or DDR5?

Go to phs-memory.com and enter your model number in the search bar. All compatible memory modules will be listed, and the RAM generation (DDR3, DDR4, DDR5) will also be displayed.

Alternatively, you can check in your operating system as described here.

Conclusion: RAM Upgrade – One of the Most Worthwhile Investments for Your PC

If you regularly work with multiple programs at the same time, upgrading your RAM is one of the most worthwhile investments. You’ll experience noticeably smoother performance, shorter wait times, and more headroom for the future.

The performance boost from additional RAM may not sound as spectacular on paper as a new processor, but in everyday use, it is far more effective, environmentally friendly, and cost-efficient. The result: fewer stutters, faster program switching, and an overall more responsive PC. These are improvements you notice every day.

Take just a few minutes to check on phs-memory.com whether your device can be upgraded. After installing additional RAM, you will benefit from a more powerful device. In many cases, this allows you to avoid a new purchase and save money.

Why You Can Buy Safely at phs-memory.com

When you buy from phs-memory.com, you avoid:

Reading outdated manufacturer datasheets.
Incorrect information about maximum RAM capacity.
Searching for the right memory configurations.
Guessing which memory technology fits your device (DDR3, DDR4, DDR5).
Determining the correct RAM speed for your processor.
Relying on false forum posts or pseudo-expert guesses.

When purchasing RAM from phs-memory.com, you benefit from:

Verified approvals: Listed modules are tested and approved by our experts for your specific device.
No risk: If the RAM does not fit, you get your money back.
Help and support before and after purchase.
Personal support: If a search is unsuccessful, just send us a request. Our memory experts will assist you personally and promptly.

Ready for a performance boost with more RAM? Find the right RAM for your system in just a few clicks on phs-memory.com!

Why is my RAM running slower? DDR5 clock issues explained during upgrades

Jürgen Hartmann — Tue, 16 Sep 2025 06:20:49 +0000

What happens if I upgrade my notebook RAM?

Many notebook users notice after a RAM upgrade that the memory frequency drops. A typical scenario: at first, two 16 GB single-rank DDR5-5600 modules are installed, running smoothly at 5600 MHz. After upgrading to 2×32 GB dual-rank DDR5-5600, the notebook does show 64 GB of RAM, but the speed falls back to 5200 MHz. This causes uncertainty – but in most cases this behavior is completely normal and technically determined.

Why does the distinction between single rank and dual rank make a difference?

Before we dive deeper, we need to clarify an important term: Memory Rank. A rank is essentially an independent group of memory chips on a module that are addressed together.

Single-rank modules have only one "row" (rank) of chips. This puts less strain on the CPU’s integrated memory controller.
Dual-rank modules have two rows of chips, which provide higher capacity. These modules are more demanding for the memory controller to handle, as it must manage virtually two logical modules per slot.

This additional load causes the BIOS/UEFI to automatically reduce the speed to a more stable level – typically from 5600 MHz to 5200 MHz. This ensures system stability and helps prevent crashes.

For the user, this means: more capacity (e.g., 64 GB) often comes at the cost of maximum possible speed.

What role does the number of RAM slots play?

The number of used slots has a significant impact on the possible clock rate:

Two slots occupied (2×16 GB or 2×32 GB): In most cases, the maximum speeds specified by the manufacturer can be reached. However, with dual-rank modules these are often slightly reduced.
Four slots occupied (4×16 GB or 4×32 GB in large notebooks or desktop motherboards): Here, the load on the controller increases significantly. Often, only lower clock rates are possible, such as DDR5-4400 to DDR5-4800.

Users should therefore note: the more modules and the greater the capacity per module, the more likely the clock rate will decrease.

What is the difference between UDIMM and SO-DIMM?

UDIMM (Unbuffered DIMM): Standard in desktops, slightly larger form factor, better signal quality. Higher clock rates can often be run stably here even with more modules.
SO-DIMM (Small Outline DIMM): Standard in notebooks, compact form factor, lower signal margins. Therefore, notebooks are more sensitive, and clock rates are reduced more quickly when dual-rank or multiple slots are used.

This explains why desktop PCs with 64 GB of RAM can often run stably at DDR5-5600, while notebooks throttle down to 5200 MHz.

What role does the CPU and the integrated memory controller play?

Every modern CPU (e.g., Intel 13th/14th generation or AMD Ryzen 7000) has an integrated memory controller (IMC). This determines how high the RAM frequency is supported for different configurations:

With 1DPC (1 DIMM per channel) and single rank, the maximum clock rates are often possible.
With dual rank or 2DPC (2 DIMMs per channel), the supported frequency is reduced.

CPU manufacturers officially document these limits in the memory specifications (e.g., for Intel under “Supported Memory Speeds”).

Should I try to manually increase the speed?

No, absolutely not. Even though the clock frequency can be manually adjusted in the BIOS settings, it is strongly advised against intervening.

The automatic downclocking by the BIOS is an essential protective function that ensures the stability and longevity of your system. Manually forcing a higher clock rate (e.g., 5600 MHz) can lead to the following serious issues:

System instability: Your device could crash unexpectedly, experience bluescreens, or hang during the boot process.
Data loss: Instabilities can lead to data corruption if write operations are taking place on the hard drive or SSD.

It is therefore not worth risking the stability of the entire system for a barely measurable speed advantage.

Does the speed difference make much of a practical difference?

The performance loss from 5600 MHz to 5200 MHz is marginal. Typically, the performance difference is below 5%. In everyday applications (office, multimedia, web, gaming), the difference is hardly noticeable. The increase in RAM capacity is, in most cases, significantly more valuable for system performance than the minimal clock reduction.

Conclusion

It is normal and technically expected for a system with DDR5 RAM to downclock from 5600 MHz to 5200 MHz when switching from single-rank 2×16 GB to dual-rank 2×32 GB modules. The cause is the higher load on the memory controller due to dual rank and the notebook form factor (SO-DIMM).

Users need not worry: performance remains very high, and the benefit of more memory far outweighs the small loss in clock speed.

Another Possible Solution

If the built-in processor supports CUDIMM or CSODIMM modules, faster DDR5-6400 modules can be used instead of DDR5-5600 modules. With this generation of memory, the previously described downclocking issue no longer occurs. This allows users to benefit from both higher memory capacity and stable clock rates without sacrificing performance.

Further information on CUDIMM and CSODIMM can be found here.

CUDIMM & CSODIMM: Faster DDR5 RAM for high-end PCs and workstations

Jürgen Hartmann — Mon, 02 Jun 2025 13:34:39 +0000

With the introduction of DDR5, the variety of new RAM technologies continues to evolve – especially for high-end systems. In addition to the well-known DDR5 UDIMM and SODIMM RAM modules for consumer systems, new memory technologies such as CUDIMM and CSODIMM are becoming increasingly important. But how do these new types of RAM differ from traditional UDIMMs and SODIMMs? And which high-performance systems can truly benefit from them?

In this blog article, we explain the differences, advantages, and application areas of these new memory standards – and help you find the right solution for your system.

These are the topics covered in our blog article:

What CUDIMM and CSODIMM are – explained simply and clearly
The key differences from conventional DDR5 RAM
Advantages for high-end systems: Workstations & gaming PCs
Buying guide: What to consider when upgrading RAM?
FAQ: Terminology explained

What is a CUDIMM or CSODIMM?

The terms CUDIMM (Clocked Unbuffered DIMM) and CSODIMM (Clocked Small Outline DIMM) refer to new types of DDR5 RAM modules mainly used in high-end systems. They are based on the well-known UDIMM modules (for desktops) and SODIMM modules (for laptops) but differ in one key aspect: internal clock signal distribution.

While traditional RAM modules receive the clock signal directly from the CPU, CUDIMM and CSODIMM have built-in clock buffering, which improves signal quality – especially at higher clock speeds or longer signal paths.

In short:

CUDIMM: optimized clock distribution for maximum performance in desktops and workstations.
CSODIMM: compact design with integrated clock boosting – ideal for mobile workstations, mini-PCs, or space-critical systems.

What makes them special:

More precise clock signals thanks to improved signal distribution
Higher stability at high clock frequencies
Ideal for demanding applications like 3D rendering or AI computations

The key difference compared to conventional RAM modules lies in the intelligent signal processing, which ensures maximum stability and top performance—especially at high DDR5 clock rates.
Important – do not confuse with XMP or EXPO RAM!CUDIMM and CSODIMM are special DDR5 RAM modules featuring improved clock signal distribution (clocked technology). They do not include manufacturer-defined overclocking profiles like Intel’s XMP (Extreme Memory Profile) or AMD’s EXPO/DOCP.

While XMP/EXPO allow RAM to be overclocked beyond JEDEC standards via BIOS settings, CUDIMM/CSODIMM operate within official specifications and use integrated Clock Driver Chips (CKD) to provide more stable and reliable signal distribution.

The key differences compared to conventional DDR5 RAM modules

What does “Clocked” mean in CUDIMM and CSODIMM?

"Clocked" RAM modules such as CUDIMM and CSODIMM improve clock signal distribution compared to conventional DDR5 RAM – providing greater stability under heavy load or multiple modules.

In standard UDIMM or SODIMM modules, the clock signal is passed directly from the processor to all memory chips. The higher the frequency or number of modules installed, the more susceptible the signal becomes to interference, crosstalk, or timing issues.

Clocked RAM Architecture: Technical Advantages of CUDIMM and CSODIMM

Improvement of signal quality / Reclocking
An integrated reclocking circuit removes clock jitter and improves signal stability. A highly precise PLL (Phase-Locked Loop) synchronizes the input signal with an accuracy of up to ±50 picoseconds.

Impedance matching
Dynamic load adjustment compensates for different capacitive loads between DIMM slots – especially with asymmetric configurations. The driver strength is specifically tuned to the respective memory banks to minimize reflections and signal distortions caused by impedance differences.

Topology adjustment
Dynamic load adjustment compensates for different capacitive loads between DIMM slots – especially with asymmetric configurations.

This architecture addresses typical challenges of conventional DDR5 modules – especially at data rates of 5600 MT/s and above. Particularly in daisy-chain topologies, common in many consumer motherboards, signal integrity suffers significantly when all slots are populated. Clocked modules enable stable operation with four populated DIMM slots for the first time. Automatic reduction of clock speed is avoided.

CUDIMM & CSODIMM vs. Conventional DDR5 Modules

Feature	DDR5 UDIMM / SODIMM	CUDIMM / CSODIMM
Buffering	Unbuffered	Unbuffered, but with integrated clock buffering logic
Clock management	Standard distribution from the processor via the mainboard	Improved distribution via integrated clock chip (CKD)
Compatibility	Standard mainboards	Requires mainboards and CPUs supporting CUDIMM/CSODIMM
Signal processing	None	Reclocking + jitter filtering
Use case	Consumer desktops, laptops	Workstations, entry-level servers, professional gaming systems
Advantages	Affordable, widely used	Higher signal stability, improved timing control

Systems with clocked DDR5 modules are aimed at users who need more stability and performance without having to switch to expensive RDIMMs (Registered DIMMs) or server platforms.

Typical use cases:

Workstations for CAD/CAM, simulation, 8K video editing
Professional mini-PCs and industrial computers
Compact servers or OEM devices
Development systems with high RAM clock speeds

Thanks to improved clock distribution, more modules with higher clock speeds can be operated stably without needing RDIMMs – ideal for systems with 4+ RAM slots or DDR5 speeds beyond 5600 MT/s.

Compatibility: Not Every System Supports CUDIMM/CSODIMM

CUDIMM and CSODIMM are not universally compatible. The mainboard manufacturer must explicitly support these memory types – both in the BIOS and hardware design. Not all boards can properly detect and run CUDIMM or CSODIMM.

That’s why:

In the Speicher.de online shop, "Clocked" modules are labeled as CUDIMM or CSODIMM.
Our memory experts verify "Clocked" RAM compatibility with your PC before sale.
If "Clocked" RAM is installed in an unsupported system, the advantages will not be used.
If a mix of “Clocked” and standard RAM without CKD chip is installed, the “Clocked” feature will be disabled.

Currently, CUDIMM and CSODIMM are supported by processors in the Intel Core Ultra 200 series – codename: Arrow Lake, based on the Z890 or Q870 chipset. No AMD-compatible boards are known yet but are expected soon.

Mainboards with full CUDIMM support:

Manufacturer	Model	Chipset	CPU series
ASRock	ASRock IMB-1249-WV	Q870	Intel Core Ultra 200
ASUS	ROG Maximus Z890 Hero	Z890	Intel Core Ultra 200
ASUS	ASUS Pro Q870M-C-CSM	Q870M	Intel Core Ultra 200
Gigabyte	Z890 AORUS Master	Z890	Intel Core Ultra 200
Gigabyte	W880 AI TOP	W880	Intel Core Ultra 200
MSI	MPG Z890 Carbon WiFi	Z890	Intel Core Ultra 200

Please note that actual support depends on the specific combination of CPU, mainboard, and BIOS version!

Our support team is happy to help you find compatible components.

Glossary: FAQ

What is a reclocking circuit?

The reclocking circuit (also called signal re-timing) is a key feature of modern CUDIMM and CSODIMM modules. It is an electronic circuit with an integrated PLL chip (Phase-Locked Loop) that takes the clock signal coming from the motherboard and:

resynchronizes it (correcting timing deviations),
cleans up the signal (reducing jitter),
and amplifies it (for clean redistribution to the memory chips).

The reclocking circuit ensures stable clock distribution, especially at high data rates like 5600 MT/s or more — this is a crucial advantage over classic UDIMM/SODIMM modules without clock amplification.

What is clock jitter?

Clock jitter refers to small, undesired timing variations in the clock signal of a processor or memory module. This means the transition between logical states (e.g., from 0 to 1) does not occur exactly at the intended clock time but is slightly shifted—sometimes earlier, sometimes later.

Causes of clock jitter:

Electrical noise in the power supply
Crosstalk between adjacent signal lines
Interference from nearby components
Signal reflections in long traces
Thermal fluctuations

Modern memory technologies like CUDIMM/CSODIMM employ active jitter reduction techniques to minimize these issues.

What is driver strength?

Driver strength in electronics refers to the ability of an output (e.g., a chip, controller, or clock driver) to transmit an electrical signal with sufficient voltage and current over a line – without quality loss.

In the context of RAM modules, this primarily concerns clock and data signal lines. The more memory chips or modules are accessed simultaneously – e.g., with long traces or multiple filled DIMM slots – the stronger the output signal needs to be.

What is a daisy-chain topology?

The daisy-chain topology is a wiring method on motherboards where multiple RAM slots (DIMM slots) are connected sequentially to a common clock signal—in other words, in series connection.

The clock signal runs, for example, from slot 1 → slot 2 → slot 3 → slot 4.

Each slot affects the signal for the next one. The further down the chain the slot is, the more the signal quality deteriorates.

This topology has a direct impact on signal quality and stability under high RAM loads, especially for DDR5 RAM modules. For this reason, CUDIMM/CSODIMM modules have an integrated clock-buffering circuit that amplifies, stabilizes, and redistributes the clock signal. This advantage helps compensate for the weaknesses of serial wiring in daisy-chain designs and prevents signal loss.

Server memory vs. traditional memory: what's the difference?

Julian Olschok — Tue, 09 Apr 2024 13:46:00 +0000

1. Server RAM Basics

In this blog post, we'll explore the differences between server memory (server RAM) and traditional RAM used in desktop PCs and laptops. Although both types of RAM perform the same basic function of providing a volatile cache for quick access to data, there are some important differences.

The term " server RAM " can be misleading, as server hardware is designed for completely different applications than PC hardware, such as running continuously 24 hours a day. The modules used generally have a higher storage density and therefore a higher total capacity. A basic property of server RAM modules is that the memory has error correction.

Basically, any RAM can be used in a PC, as long as the motherboard and CPU support the specific features of the respective module. You can find out which RAM is compatible in your computer or server via our online store.

In short, server hardware is different in that it is typically designed for continuous operation and offers higher data integrity than PC components. Because of these specific characteristics, server components are usually more expensive than typical PC hardware. However, if you are looking to upgrade a server or need a more robust computer system with more capacity and error correction, you should consider using server components.

Different types of ECC server memory:

The following variants of RAM memory with error correction are currently available:

Unbuffered ECC (DIMM) - Standard PCs and workstations, not servers
Registered ECC (RDIMM) - Server and high-end systems
Load-Reduced ECC (LRDIMM) - energy-efficient servers and high-end systems

2. ECC RAM (Unbuffered ECC - DIMM)

The unbuffered ECC DIMM module (DIMM = Dual Inline Memory Module) is the simplest form of RAM memory with ECC functionality. A distinction is made between UDIMM ECC modules for desktop systems, workstations and small servers and SO-DIMM ECC modules for mobile workstations and storage systems.

2.1 Error Correction (ECC): Importance & Benefits for Servers

Server RAM memory usually has ECC (Error-Correcting Code) functionality, which can detect and correct memory errors. This is crucial for servers, as they are in continuous operation and data loss can have catastrophic consequences for business-critical areas. Conventional RAM, on the other hand, usually does not have ECC support, and a memory error here leads to system crashes, blue screens, uncontrolled reboots and possibly data loss.

Data integrity is critical for servers. A single bit error in memory can lead to system crashes, data loss, and inconsistent data. This is where ECC memory comes in and prevents such failures.

2.2 Server RAM error correction: How it works

The ECC function in server memory prevents system crashes and is a technology that detects and corrects errors in the main memory. With the help of an additional data bit in the RAM memory, redundant data is generated in the memory chip. The ECC memory can correct a 1-bit error immediately. If 2 or more bit errors are detected, this does not lead to a system crash. Instead, the memory errors are logged and reported. Data loss is avoided and data integrity is thus guaranteed.

2.3 ECC memory offers several advantages for servers:

Greater data integrity: ECC memory can prevent data loss due to memory errors. This is especially important for companies that work with sensitive data, such as databases and financial systems.
Greater reliability: For demanding systems that operate around the clock and are subject to high levels of stress.
Improved system stability: ECC memory can detect bit errors, reducing or completely avoiding system crashes. This in turn leads to higher server availability and productivity.
Reduced maintenance costs: ECC memory can reduce the cost of maintaining and repairing servers by reducing the likelihood of hardware failures.

2.4 ECC vs. Non-ECC RAM for Servers

ECC server memory is generally a little more expensive than conventional non-ECC memory, but the advantages outweigh the disadvantages in most cases. ECC memory is indispensable, especially for servers and workstations that work with sensitive data or require high availability.

Conventional memory (non-ECC) is usually used when the system only runs for a few hours a day, the memory sizes are smaller, the RAM memory is usually only used to a fraction of its capacity and system crashes do not have far-reaching consequences for the existing data.

However, the use of ECC server RAM modules is only possible in devices such as workstations, servers and high-end devices that are designed for ECC operation and support this feature.

3. RDIMM – Buffered RAM (Registered DIMM)

In contrast to the unbuffered ECC modules, the RDIMM server RAMs are buffered RAM. The other properties of an ECC RAM memory are identical, however.

3.1 What does buffered RAM mean?

Buffered RAM is a type of memory module that has an additional buffer placed between the memory chips and the memory controller.

The main function of the buffer is to reduce the electrical load on the memory controller by stabilizing the signals and buffering (caching) the data before sending it to the memory controller. This allows more memory chips to be used on a module, thus increasing the overall capacity of the system without compromising stability.

Buffered RAM is typically used in servers and workstations where large storage capacity and reliability are extremely important. However, buffered RAM modules usually have higher latency compared to unbuffered RAM modules because the data has to pass through the additional buffer.

In summary, "buffered" in a RAM means that the RAM module has an additional buffer that is placed between the memory chips and the memory controller to increase stability and reduce the electrical load on the memory controller.

3.2 RDIMM memory: advantages and disadvantages

Advantages:

Higher memory capacities: The maximum memory capacity per memory module is up to 4x higher when using RDIMM modules compared to UDIMM or UDIMM-ECC modules.
Improved stability: Using RDIMM modules improves data integrity and reduces the likelihood of memory errors. This is especially important in high-utilization environments where high system availability is required.
Increased scalability: RDIMM server RAM allows more memory modules to be used in a system than UDIMM or UDIMM-ECC. This can increase the overall memory capacity of the system and improve performance in memory-intensive applications.
Improved error management: RDIMM RAM memory can better detect and report memory errors, making server troubleshooting and maintenance easier.

Disadvantages:

Higher cost: RDIMM memory is typically more expensive than UDIMM or UDIMM-ECC memory modules.
Increased complexity: RDIMM RAMs are only found in servers, workstations and high-end devices and require the use of processors that support this memory technology.
Higher latency: The operating speed of the memory is reduced by the buffer function of the RDIMM module.
Reduced compatibility: Many systems require an exact RAM specification of the RDIMM memory module. This is the only way to ensure that the memory modules function correctly in the system. Using or mixing different RDIMM variants is often not possible.

3.3 RDIMM variants

RDIMM - Standard RDIMM
RDIMM – DDP (Dual-Die-Package)
RDIMM – 3DS (3-Dimensional-Stacking)

3.3.1 RDIMM - Standard RDIMM

RDIMM memory modules are available with a capacity of 4, 8 and 16 GB in DDR3, as well as 4, 8, 16, 32 and 64 GB in DDR4, as well as 16, 32, 64 GB in DDR5.

The typical memory organizations for RDIMM modules (standard RDIMM modules) are 1Rx4, 2Rx4, 1Rx8 and 2Rx8, where the number before the R stands for the number of ranks (1 = single rank, 2 = dual rank) and the number after the x defines the width of the DRAM.

3.3.2 RDIMM – DDP (Dual-Die-Package)

To enable larger storage capacities, other storage technologies are needed.

RDIMM-DDP memory is a type of RDIMM that uses dual die package (DDP) technology. This means that an RDIMM-DDP memory module has two DRAM memory chips in a single package. Using this technology allows more memory chips to be placed on a module, which can result in higher overall capacity and/or performance. This is particularly useful in environments that require large amounts of memory, such as servers with virtualization environments or workstations with high memory requirements.

RDIMM-DDP server RAM can usually be mixed with RDIMM standard memory if the server's memory configuration rules allow it. This allows memory module sizes of 32 GB for RDIMM-DDP in the DDR3 range; 64 GB, 128 GB in the DDR4 range.

The typical memory organizations for communication with the CPU memory controller for RDIMM-DDP modules (Dual-Die-Package-RDIMM module) are 4DRx8 ≙ 2Rx8 and 4DRx4 ≙ 2Rx4.

With the DDP (Dual-DIE-Package), two DRAMs are located next to each other on the board in a DRAM housing.

3.3.3 RDIMM – 3DS (3-Dimensional-Stacking)

With 3DS-RDIMM modules (3-dimensional stacking), the memory is stacked vertically, meaning that several DRAM DIEs are built on top of each other.

All DRAM DIEs of the same level (1H or 2H or 3H, ...) together form a rank.

The first DRAM DIE (1H = first level) that is directly connected to the memory board is the master. The master is the only DRAM DIE that communicates with the processor. This is why it is called a physical rank.

The other DRAM DIEs (2H, 3H, 4H, ...) are called slaves. They do not communicate directly with the processor and are invisible to the processor.

With 3DS-RDIMM, memory module sizes of 64, 128 and 256 GB in the DDR4 range and 128 and 256 GB in the DDR5 range are achieved.

A notice:

3DS RDIMM modules cannot be combined with standard RDIMM modules or with RDIMM DDP RAMs!

4. LRDIMM – (Load-Reduced DIMM)

Even though the names RDIMM and LRDIMM are almost similar, the two memory formats differ in their functionality and properties. It is therefore not possible to use both memory technologies in one device!

Similar to the RDIMM server RAM, the LRDIMM memory module also has a buffer. It is therefore also a buffered or registered DIMM server memory module. The error correction feature is also present in the LRDIMM memory module.

The small chips among the DRAMs are the special chips of the LRDIMM RAM modules.

4.1 How does buffered RAM work in the LRDIMM module?

LRDIMMs also use buffered RAM to further reduce the load on the memory bus and optimize overall performance. Unlike conventional RDIMMs, which use a single buffer per module, LRDIMMs use a more advanced technology that uses additional chips and logic to reduce the load even further. By merging the data lines in the LRDIMM onto the central memory buffer, an LRDIMM only loads the server like a comparable 1 rank RDIMM memory module.

In practice, this means that in many servers only 4 of 6 memory slots can be used with RDIMM memory, but all memory slots can be used with LRDIMM memory modules. Therefore, the maximum memory configuration can usually only be achieved with LRDIMM memory.

The key difference is that LRDIMMs can support multiple DRAM ranks on a single module. Therefore, buffered LRDIMMs can achieve higher total capacity without compromising performance or stability. This makes them ideal for applications that require a large amount of storage space, such as databases, virtualization environments, and big data applications.

Buffered RAM plays a critical role in providing reliable and high-performance storage solutions for modern server infrastructures. By reducing the load on the memory bus, buffered RAM enables more efficient data transfer while reducing the risk of signal interference and data errors.

4.2 LRDIMM memory: advantages and disadvantages

Advantages:

The advantages of LRDIMM RAM modules are the same as those of RDIMM modules, they only differ in these points:

Highest possible memory density and module count: LRDIMMs offer improved performance in terms of memory capacity and density compared to RDIMMs. They provide greater flexibility in configuration and support for larger total capacities per module, as well as a higher number of modules per system.

LRDIMM modules reduce the load on the server more than RDIMM memory modules and at the same time allow the maximum possible memory. This is not always possible when using RDIMM modules.

Disadvantages:

LRDIMM server RAM modules have similar disadvantages to RDIMM modules. These are higher costs, increased complexity and only compatible with selected devices. In addition, LRDIMM modules cannot be used together with other technologies in a device.

4.3 LRDIMM Variants

LRDIMM – DDP (Dual-Die-Package)
LRDIMM – 3DS (3-Dimensional-Stacking)

4.3.1 LRDIMM – DDP (Dual-Die-Package)

To enable larger memory modules for servers and workstations, other storage technologies are needed.

The LRDIMM DDP memory uses the same technology as the RDIMM type. The Dual-Die-Package technology is explained in detail here.

LRDIMM-DDP server RAM can be mixed with standard LRDIMM memory if the server's memory configuration rules allow it. This allows memory module sizes of 32 GB for LRDIMM-DDP in the DDR3 range; 64 and 128 GB in the DDR4 range.

The typical memory organization for communication with the CPU memory controller is 4DRx4 for LRDIMM-DDP modules (Dual-Die-Package-LRDIMM module).

4.3.2 LRDIMM – 3DS (3-Dimensional-Stacking)

The 3DS technology does not differ between RDIMM and LRDIMM modules.

The 3DS technology is explained in detail here.

5. Choose the right storage capacity for the server

Memory modules for servers and workstations are generally available with higher capacities than conventional RAM. This is because servers and workstations often have to process large amounts of data. Many users have simultaneous access to, for example, databases, mail systems, terminal servers or web applications. For professional applications with high demands on memory capacity, only server RAM (ECC, RDIMM or LRDIMM) is therefore suitable.

5.1 How much RAM do I need for my server?

This depends on various factors, such as:

Is virtualization such as VMware, Hyper-V, etc. used?
Which server applications or software are running on the server?
Is there a terminal server?
How many users or terminal users access the server?
Are there database systems that require intensive memory usage?
Etc.

5.2 What impact does insufficient RAM have on the overall performance of the server?

If the RAM in the server is too small, this has a negative impact on the overall performance of the system. The result is a noticeable reduction in response speed. This is then shown as follows:

Increased hard disk usage:
If the available memory is not enough to hold all the required data and programs in RAM, the operating system has to resort to the paging file on the hard disk. Since access to the hard disk is much slower compared to RAM, this leads to significant performance losses and delays in data processing.
Increased processor utilization:
The processor utilization increases significantly to compensate for the RAM overload. Applications' access to data therefore slows down noticeably. In addition, the CPU's power consumption increases in conjunction with higher power consumption and an increased system temperature.
Degraded multitasking ability:
A lack of memory can affect the server's ability to perform multiple tasks simultaneously. This can cause some processes to lag or, in the worst case, fail to run at all, affecting the server's overall productivity.
Instability and crashes:
When server memory becomes overloaded and insufficient, there is an increased risk of system instability and crashes. This can cause applications to terminate unexpectedly or the operating system to crash, which can lead to data loss and downtime.
Limited scalability:
Under-sized server RAM can limit the scalability of the server. When additional resources are to be added to handle increasing demand, a lack of memory can affect the server's ability to use these additional resources effectively.
Reduced responsiveness and speed:
If there is insufficient memory to support the running processes and applications, the server's responsiveness may be significantly reduced. Applications may run slower and the user experience will be affected as system response times will be longer.

Insufficient memory significantly reduces the responsiveness and therefore the speed of the entire server system. This not only negatively affects the user experience, but also the productivity and reliability of the server. It is therefore important to carefully analyze the memory requirements of a server and ensure that there are sufficient resources to meet the requirements of the planned applications.

As a guideline, the maximum RAM memory usage should not exceed 70%.

However, if the RAM memory is too large, no negative performance losses are to be expected, because the unused RAM has no disadvantage on the system speed.

6. RAM upgrades for servers: possibilities & limitations

The choice between server RAM and regular memory depends on individual requirements. Server RAM is the best choice for applications that require high reliability, fault tolerance and large storage capacities. Regular memory is sufficient for most home applications and offers good value for money.

6.1 Form factor:

UDIMM ECC (Unbuffered Dual In-Line Memory Module with ECC support): Used in smaller servers.
RDIMM (Registered Dual In-Line Memory Module): With a built-in buffer chip for improved stability, used in servers and workstations.
LRDIMM (Load-Reduced Dual In-Line Memory Module): Enhanced version of RDIMM with additional load reduction for higher memory capacity and speed.
SODIMM (Small Outline Dual In-Line Memory Module): Used in laptops, mini PCs, and other small form factor computers.

UDIMM (Unbuffered Dual In-Line Memory Module): Standard RAM modules without buffering used in desktop computers and smaller servers.

6.2 Clock frequency:

The clock speed of server memory is usually lower than that of traditional RAM. This is because reliability and fault tolerance are more important for servers than speed.

6.3 Compatibility:

Regardless of whether it is RAM for servers or desktop/notebook RAM, it should not be assumed that all possible modules are compatible with each other just because the form factor and clock frequency match.
Rather, it is absolutely necessary to always choose the right RAM for the respective device, which is intended for the model to be upgraded.
On phs-memory.com you will find the right RAM for your device. We will also show you which modules and module sizes are the right ones for your device. Here you will find the maximum possible RAM memory for your device.

In the data sheets and documentation of the manufacturers, the system memory is often stated to be lower than is actually possible. We have observed this effect in thousands of devices and analyzed it in detail.
You can find more information on this topic in our overRAMing project.

6.4 Optimizing server performance / server RAM configuration

More RAM contributes to increased server performance under high loads by making optimal use of free memory resources and not slowing down the system due to RAM that is too small.

Are you still unsure which modules are best suited to your system and requirements? Contact our support and we will help you with this matter.

7. Frequently asked questions about server memory

What is the difference between server RAM and desktop RAM?

They essentially differ in error correction, additional load on the CPU (registered) and price. You can find more details in this article.

What types of server memory are there?

ECC, RDIMM or LRDIMM for DDR3, DDR4 and DDR5 server memory.

Conventional RAM is called UDIMM or SO DIMM.

How can I check my server's memory?

All RAM modules used in servers are error-corrected server RAM (ECC, RDIMM or LRDIMM). This technology automatically monitors the built-in RAM together with the processor's memory controller and reports errors or defective memory, usually before the system crashes. This technology can even correct 1-bit errors in ECC memory.
Some servers allow the RAM to be checked during the boot process. In the BIOS or UEFI settings, there is a memory test option that runs during system startup and identifies any memory problems.
Some server manufacturers also offer special diagnostic software that can check the hardware status, including the RAM.

Here are some examples:

HP (Hewlett Packard) - HP Insight Diagnostics
HPE (Hewlett Packard Enterprise) - HPE ProLiant Integrated Management Log Viewer
Dell - OpenManage Server Administrator
Lenovo – ToolsCenter
Cisco - UCS Manager

These tools can either be integrated into the BIOS or provided as standalone applications.
If the server manufacturer does not offer any tools, we recommend the Memtest86 program, which is discussed in more detail in this article.

How can I upgrade my server's memory?

On phs-memory.com you can find compatible memory for your server by searching for the server's model name. In this article you can find out about the differences and properties of the memory modules compatible with your system.

What population rules apply when expanding the memory of my server?

The population rules/matrix for expanding a server's memory can vary depending on the hardware manufacturer and server model. There are some general guidelines to avoid mistakes and to consider:

Use the model name to find the right server RAM on Speicher.de:
On Speicher.de you will always find the right RAM for your server system. The website shows you the possible memory sizes and possible memory technologies for the server you are looking for.
In many cases you will receive further information on important configuration rules.
If you have any questions about the possible total capacity, upgrading in general or using existing memory modules together with the purchase of larger and new server RAM, you can contact our memory team who will be happy to assist you.
Server manual / server documentation
Consult the server manual or documentation:
Before you begin memory expansion, you should consult your server manual or documentation for specific information on supported memory types, maximum capacities, supported configurations, and population rules.
Identify the supported memory types:
Certain servers only support certain types of memory modules, such as DDR4 RAM or only ECC memory. Make sure that the memory sticks you purchase are compatible with your server's supported specifications and that the population rules are followed.
Consider the supported capacity per module and per slot:
Check the maximum capacity supported per memory module and per memory slot. For example, some servers may support up to 256 GB per module, while others may only allow up to 32 GB per module.
Consider the number of memory channels:
Some servers use a specific number of memory channels (ranks) for maximum performance. Make sure you distribute the memory bars evenly across the available channels for optimal performance.
Pay attention to the population order:
Some servers require a specific memory module population order to ensure maximum performance. This order may be marked on the board or described in the server documentation.
Mixing memory modules:
In some cases, different sizes of memory modules can be mixed. However, this can quickly lead to performance degradation. It is recommended to use 100% matching memory modules to avoid incompatibilities. It is recommended to always use modules of the same size in the device or to strictly follow the device's memory population matrix.
Speeds of memory modules
Using memory modules with different clock frequencies in a server is no problem with current devices. The maximum clock frequency is always determined by the CPU used. If the clock speeds are different, the system automatically adjusts to the lowest clock frequency.
Update the server BIOS:
Make sure the server BIOS or UEFI is up to date, as updated firmware versions may provide additional memory support or bug fixes.

If you have any questions about memory expansions for servers, our storage experts will be happy to help you and answer your questions before you make a purchase. Do not hesitate to contact us via the contact form or our telephone storage hotline.

Here you can find help and support.

How can I buy server memory?

Click on our store link from Speicher.de and look for the model drawing of your server. Select the RAM memory you want and add it to your shopping cart.

What is the difference between single-rank, dual-rank and quad-rank memory?

Single-rank, dual-rank and quad-rank refer to the number of memory ranks on a memory module. A rank is a group of memory chips operating in parallel on a memory module.
Here are the differences between single-rank, dual-rank and quad-rank memory modules:

Single-rank memory:
A single-rank memory module contains only one group of memory chips. Single-rank memories generally have faster access times and can access data more quickly than ranks with higher densities.
However, they typically offer less total capacity per module compared to dual-rank or quad-rank modules.
Dual-rank memory:
A dual-rank memory module contains two separate ranks of memory chips.
Dual-rank memory allows for a higher total capacity per module compared to single-rank modules. Because they have two separate ranks, dual-rank modules can potentially offer slightly higher performance when two modules are used in systems that then benefit from an even distribution of memory accesses.
Quad-rank memory:
A quad-rank memory module contains four separate ranks of memory chips. Quad-rank memory offers the highest total capacity per module compared to single-rank and dual-rank modules.
However, due to the higher number of ranks, quad-rank modules can have slightly higher latency as memory accesses must be coordinated between ranks.

Overall, single-rank modules may offer slightly faster speeds, while dual-rank and quad-rank modules allow for higher total capacity per module. The choice between single-rank, dual-rank, and quad-rank memory depends on the specific system requirements and budget, with each option having its own advantages and disadvantages.

Can modules from different manufacturers be combined?

Yes, this is possible. Please note that the guidelines for using the memory are followed: rank number, technology (DDR3, DDR4, DDR5), as well as the specification (LRDIMM, RDIMM, UDIMM, ECC...)

Why do I need error-correcting memory in the server?

With error-correcting storage, you benefit from improved stability, increased scalability, and improved error management.

Can I overclock my server's memory?

Overclocking RAM makes no sense in the server sector, which is why manufacturers do not allow it. The focus is more on stability and quality. Overclocking would be counterproductive here.

How and where do I find compatible RAM for my server?

Depending on the processor technology, which consists of the processor family, generation and category, different RAM is required for the different servers. We have already done this research for you!

On phs-memory.com you can search for compatible RAMs based on your model name. Simply enter the manufacturer, device or article group in the search bar and you will find your device in the list, as well as other helpful tips for buying server RAM.

After you select your model, you will find all the possible options available to you to upgrade the RAM memory.

Performance Boost with a RAM Upgrade for Synology NAS

Julian Olschok — Fri, 19 Jan 2024 11:47:00 +0000

Work faster, increase response times, and improve multitasking!

Upgrading the memory in a NAS, such as the Synology DS923+, can be crucial to enhancing the system’s performance and efficiency. Memory serves as a temporary storage for running applications and services, and there are various scenarios where expanding capacity makes sense.

Why should you upgrade your Synology NAS’s RAM?

One of the main reasons for upgrading memory lies in the improved availability of resources for applications and services. Some of these services can be very demanding and tend to monopolize available memory for their own use. This results in the entire system slowing down, as other applications do not receive enough resources.

By increasing the memory, these resource bottlenecks can be resolved, and overall system performance can be improved.

How to determine if a memory upgrade is necessary?

In particular, when multiple users access the NAS simultaneously, increasing memory capacity can be advantageous. In situations where multiple users access the system and use various services at the same time, a larger memory size can speed up data processing and improve response times. This is especially relevant if the NAS serves as a central storage location for file sharing, media files, or other shared resources.

In the Resource Monitor, you can quickly check your NAS’s performance data. Open the Resource Monitor and keep it open while allowing normal operation on your Synology NAS. The monitor records the performance of CPU, memory, and network. During use, you will see the current RAM usage in percentage. If usage is high at over 80%, you should consider getting a RAM upgrade.

Acting proactively and preventing problems

Considering future requirements is another important aspect. With the introduction of new applications or an increase in the number of users, resource requirements also increase. A forward-thinking memory upgrade can ensure that the NAS meets future demands and provides optimal performance.

Practical Example: Neural Networks

A practical example that highlights the importance of sufficient memory is the use of neural networks.

Neural networks consist of a large number of parameters that are updated during the training process. The training process requires large and fast memory to store data temporarily and make it available for required calculations. With too little memory, the system may have to offload data to the hard drive, leading to significant performance losses. Adding additional memory can eliminate these bottlenecks and enable the system to work more efficiently.

A simple upgrade, such as from an 8 GB module to 2 x 32 GB of memory, can make a significant difference in the system’s performance. This not only allows for smoother operation but also increases efficiency in handling demanding tasks.

Which module is suitable for my Synology system?

It is important to check compatibility with the Synology NAS model before upgrading memory and to ensure that the selected memory modules meet technical requirements. Information on suitable upgrade options can be found by searching for your device in the top search bar. Overall, increasing memory can be a worthwhile investment to optimize the performance and future viability of your NAS system.

Purchase memory for your Synology system and upgrade it.

A RAM upgrade is not complicated and can be done quickly. Expanding memory is easy and possible for devices such as DS224+ / DS423+ / DS723+ / DS923+, as well as many others, without computer knowledge.

Even if the manufacturer specifies a maximum size for the memory modules, this can usually be exceeded. Search for your device and find all options available for your system.

Installing the Upgrade Memory Modules

Follow this video tutorial to install your purchased memory modules in your system.

Is there a RAM memory slot in the QNAP series TS-x64, TS-x64U, and TS-x64eU?

Jürgen Hartmann — Wed, 17 Jan 2024 14:54:00 +0000

Reports frequently appear in various forums that the QNAP TS-464-8GB and other drives from the QNAP series TS-x64, TS-x64U, and TS-x64eU are not upgradeable in the standard configuration of 8GB from the factory. The rumor persists that there are two different model variants.

Test Example - QNAP TS-464-8G

We investigated this case in detail using the QNAP TS-464-8G as an example. In May 2023, we demonstrated that the RAM is not soldered on the QNAP-TS-464-8G. Instead, the QNAP TS-464-8G has two expansion slots for memory modules, just like its sibling model TS-464-4GB with 4GB.

Our extensive testing showed that contrary to QNAP's statements, the QNAP TS-464-8G can be upgraded to 64GB (2x32GB). In our test, we equipped both memory slots with a 32GB phs memory RAM module each. The very first boot process took a little longer, but the device started up without any issues. In the system status of the NAS, the full 64GB are displayed. Even after installing Docker applications, where the RAM was nearly fully utilized, no problems were observed. This is thus referred to as overRAMing.

Based on numerous customer feedback, we can now confirm that not only the QNAP TS-464-8GB but also all other devices from the same model and series, which are listed in QNAP's technical documentation with 8GB of RAM from the factory and are allegedly not upgradeable, have two memory slots. Thus, an upgrade to 64GB with two 32GB memory expansions is also possible here.

Are there different model variants for the TS-x64, TS-x64U, and TS-x64eU series?

So far, we have successfully upgraded hundreds of devices from these model series, which were allegedly not equipped with RAM expansion slots and came with 8GB RAM from the factory. So far, there has been not a single customer report of the 8GB RAM on the motherboard being soldered or of no RAM slots being present. Our experience indicates that the rumors about different motherboard versions with the same model designations are unfounded. Instead, we can confirm that the same motherboard has always been installed in all models.

Which devices from the QNAP series TS-x64, TS-x64U, and TS-x64eU were tested and are expandable with RAM?

Modell	Anzahl RAM Slots	max. RAM lt. QNAP	max. RAM – Test overRAMing
TS-264-8G	2	8GB	64GB (2x32GB)
TS-364-4G	2	16GB	64GB (2x32GB)
TS-364-8G	2	8GB	64GB (2x32GB)
TS-464-4G	2	16GB	64GB (2x32GB)
TS-464-8G	2	8GB	64GB (2x32GB)
TS-464U-4G	2	16GB	64GB (2x32GB)
TS-464U-8G	2	8GB	64GB (2x32GB)
TS-464U-RP-4G	2	16GB	64GB (2x32GB)
TS-464U-RP-8G	2	8GB	64GB (2x32GB)
TS-464eU-4G	2	16GB	64GB (2x32GB)
TS-464eU-8G	2	8GB	64GB (2x32GB)
TS-664-4G	2	16GB	64GB (2x32GB)
TS-664-8G	2	8GB	64GB (2x32GB)
TS-864eU-RP-4G	2	16GB	64GB (2x32GB)
TS-864eU-RP-8G	2	8GB	64GB (2x32GB)
TS-1264U-RP-4G	2	16GB	64GB (2x32GB)
TS-1264U-RP-8G	2	8GB	64GB (2x32GB)

Installation of the upgrade memory modules

Follow this video tutorial to install your purchased memory modules into your system.

Troubleshooting support – problem-solving approaches

Jürgen Hartmann — Mon, 20 Mar 2023 08:42:00 +0000

Troubleshooting support: We are your contact even after the purchase

Our goal is to make upgrading your system with memory as easy as possible. We have recorded almost every system and its respective expansion options so that we can offer you the right memory immediately in our online shop. When ordering, you can rely on our compatibility guarantee for your system. We have also implemented a quality management system that prevents errors in memory and logistical processes.

After ordering, you will receive detailed and illustrated installation instructions by email so that you can install the memory without any problems - even if you have no previous experience with it. After installing the additional RAM, your system starts without any problems and recognizes the expansion immediately. This increases the total capacity of the system RAM and you can benefit from improved performance. You can finally work more smoothly and quickly - that's how it should be!

If a problem does occur despite everything and the RAM does not work after installation, there are often simple solutions that we will be happy to explain to you. We can usually solve problems within one working day without any red tape.

We present you some possible solutions

Problems starting the system after installing new memory? – The screen remains dark?

1.1 If the screen remains dark after installing new memory, this may be because the memory has not been installed correctly. Especially with DDR4 16GB / 32GB, it can often happen that even the last millimeter is crucial. If you can still see gold contacts, the memory has not been installed correctly and the boot process cannot take place. This problem often occurs even with "professionals".

1.2 Even if the memory has been installed correctly, there may still be longer waiting times during the initial boot process. The new memory addresses must be rearranged and the virtual memory on the hard disk must also be adjusted. The first restart after expanding the RAM may therefore take a little longer. We recommend waiting at least 15 minutes.

What to do if the RAM is not recognized?

1.1 The problem is invariably that the memory is not fully and correctly seated in the slot. In this case, removing the memory and reinstalling it helps.

1.2 Dust or corrosion in the memory slot's plug contacts can also prevent electrical contact between the memory slot and the memory. One solution to this would be to carefully clean the slot with dry, oil-free compressed gas or to clean it mechanically ( Caution: There must be no voltage on the memory slot!).

The system emits warning tones after installing the new memory and no longer starts

1.1 The memory may have been ordered for a different system. Often, for example, customers unknowingly order the cheaper RDIMM DDR3 modules for their desktop devices, even though these are not supported. Just because the parameters DDR3, 1600MHz and 1.35Volt match does not mean that the memory is compatible. We have an extensive list of memory for almost every device. To avoid making a wrong purchase, we strongly recommend using the exact model name to find the right memory. This will ensure that the memory is compatible and will work without problems.

1.2 Mixing technologies can also cause problems, especially in the server area. Customers often try to mix ECC and RDIMM memory modules, which can lead to warning beeps after the upgrade. Some motherboards, such as the Asus E3 PRO GAMING V5, support both ECC and UDIMM memory modules, but not both technologies at the same time. It is important to choose a technology.

1.3 If you can rule out an incorrect order and still hear warning tones, the cause will be incorrect installation of the memory. If you have installed the new memory and hear warning tones, it may be that the memory is not seated correctly in the socket. We recommend that you reinstall the memory correctly to solve the problem.

Help with questions and problems: Support with your memory upgrade

We are happy to help you with any questions or problems both before and after purchasing your memory upgrade. If you encounter any difficulties, please do not hesitate to contact us. We will certainly be able to offer you a suitable solution.

In order to help you as quickly as possible, we need the following information from you when contacting us by email or telephone:

Order number, customer or invoice number (found on the storage packaging or invoice)
Exact model name and serial number of your device (found on the type plate)
Exact error description (e.g. memories work individually, but not together with existing modules)
Information about existing memory modules
Current BIOS version
operating system (e.g. Windows 11 64 bit)

Please provide us with this information to ensure quick and efficient support.

You can reach us either by email at info@speicher.de, via our contact form or by phone via our storage hotline at +49 9721 784678.

XMP Memory – Overclocking Made Easy

Tasneem Farzat — Tue, 14 Mar 2023 11:56:00 +0000

What is an XMP Memory, and what is it used for?

An XMP (Extreme Memory Profile) memory is a specific type of memory designed for use in computers and other electronic devices. The XMP memory is optimized for configuration, allowing it to operate at higher speeds than standard DDR (Double Data Rate) memory.

XMP technology was developed by Intel and enables overclocking of the memory through the BIOS or UEFI (Unified Extensible Firmware Interface). This means that the memory can be operated at higher clock frequencies and latency settings to achieve better performance.

However, it's important to note that XMP memory is usually more expensive than standard DDR memory and that not all computers and motherboards support XMP. Before purchasing XMP memory, ensure that your motherboard and CPU support XMP.

What are the Key Features of XMP Memory?

XMP memory is not only known for its performance but also for its attractive design. Most XMP memory modules feature striking passive heatsinks, which not only look good but also help keep the memory cool and stable. However, the internal features are what make XMP memory stand out.

Here are some of the key features:

Increased Clock Rate: XMP memory can operate at a higher clock rate than standard DDR memory.
Lower Latency: XMP memory generally has lower latency than standard DDR memory.
Overclocking Profiles: XMP memory has specific overclocking profiles that allow quick and easy optimization of clock rates and latencies.
Higher Cost: Due to its advanced features and performance, XMP memory is typically more expensive than standard DDR memory.

Intel-Certified XMP Memory: How Does It Work?

Intel's XMP memory allows overclocking without setting each memory value individually. Voltage, timing values, and CAS latency values are predefined in the memory. These values are permanently stored in the SPD EEPROM on the DIMM board.

The Extreme Memory Profiles (XMP) include not only JEDEC timings in the SPD but also faster Intel XMP values, which are stored in an unused part of the SPD alongside the JEDEC values.

For DDR4 memory, Intel provides the XMP 2.0 standard with two predefined profiles and JEDEC standard settings. DDR5 memory offers the XMP 3.0 standard with three predefined values + 2 user-configurable XMP profiles and JEDEC standard settings.

When XMP memory is installed, the system initially boots with the standard JEDEC settings of the memory. If the motherboard, CPU, and all memory modules support the same XMP profile, XMP can be activated in the BIOS or UEFI menu.

In a DDR4-XMP system, two pre-configured profiles are usually available for activation upon enabling XMP.

Using predefined XMP parameters for DDR3, DDR4, and DDR5 memory allows overclocking without manually setting and testing timing values in the BIOS. Voltage, memory clock, and timings are coordinated in the predefined profiles stored in the SPD EEPROM of the XMP memory. These values are stored as a "package," allowing profile selection without setting each individual value. This enables overclocking even without detailed knowledge.

Intel XMP Profiles - Benefits and Limitations for Gamers and Office Users

Intel's XMP profiles enable speeds of up to DDR4 5333 and DDR5 8400 compared to the JEDEC standard of DDR4-25600 (3200MHz) and DDR5-4800/5600MHz. While XMP is irrelevant for office users, it can be interesting for gamers who want to use the available profiles. Note that the motherboard, CPU, and memory must support the same XMP profiles. If you have an AMD CPU, you can use similar features like Asus' "DOCP," Gigabyte's "OCP," and MSI's "X-AMP." Thanks to the predefined memory profiles, overclocking is possible without knowing timing details. The stability is usually better with XMP profiles than with individual overclocking settings. If the motherboard does not support XMP or XMP is not enabled, the memory operates with regular JEDEC timings. Various profiles can be tested, and resetting to the default settings is easy.

Disadvantages of Using Intel XMP Profiles

However, there are some drawbacks: XMP memory is only useful if the motherboard, CPU, and memory support the same XMP profile. Changing the CPU's frequency and/or voltage beyond Intel specifications can void the processor's warranty. Activated XMP profile settings can affect system stability. XMP memory is relatively expensive, and the initially high memory frequencies are often quickly matched by increasingly fast JEDEC memory standards. The heatsinks on the DRAMs of XMP memory conceal details, which may cause compatibility issues.

Overall, XMP memory is most appealing to overclocking enthusiasts who should carefully consider its advantages and disadvantages. For office users, XMP is often unnecessary, as system stability is more important than performance.

Note: XMP memory cannot be used with memory modules without the XMP function.

XMP Memory Simplifies Overclocking but Poses Risks to System Security and Processor Warranty

XMP memory, with its predefined profile settings and certification, is an easy way to overclock the CPU, memory, and memory bus on the motherboard. However, a risk to system security remains, as overclocking may void the processor warranty. Additionally, the attractive MHz numbers achievable with XMP overclocking are often surpassed by the rapid development of standard JEDEC memory.

speicher.de currently does not offer XMP memory modules. We prioritize system stability!

RAM Cleaning Tools: A Useful Tool for Optimizing RAM or an Unnecessary Risk?

Jürgen Hartmann — Fri, 10 Mar 2023 11:04:00 +0000

RAM Cleaning Tools: Optimizing RAM or a Risk for Performance Problems?

A RAM Cleaning Tool is a tool designed to optimize a computer's random access memory (RAM) by removing unused or unnecessary programs and data from the RAM. This can improve the performance of the computer by freeing up more available memory. While a RAM cleaning tool may initially seem useful because it promises to clear out unnecessary data and processes, thereby creating more free memory space, it can also lead to unwanted side effects. For instance, it can delete or terminate critical system processes that are necessary for the stability of the operating system and other applications. It may also result in the operating system removing important data from the RAM that is still needed, leading to performance issues and crashes. Therefore, in most cases, it is better to avoid a RAM cleaning tool and instead rely on other measures to enhance the computer's performance, such as clearing temporary files, uninstalling unnecessary programs, or upgrading the RAM to increase capacity.

How Operating Systems Utilize RAM and Why Sufficient RAM Capacity is Important

Current operating systems intelligently utilize RAM to keep all active processes in the random access memory (RAM) as much as possible. The hard disk or SSD storage is also intelligently used to store passive processes in the virtual memory that is saved on your hard drive or SSD. To provide all active processes with the necessary memory addresses, the RAM must have sufficient capacity. When the RAM is loaded beyond the 100% threshold, the system begins to "swap," and the data of active processes that no longer fit in the RAM are moved to the virtual memory on the hard disk or SSD. This can even be audible in systems with mechanical hard drives and significantly slow down the system's response times, as read/write access through the hard drive or SSD takes considerably longer than through the fast RAM.

RAM Cleaning Tools: How They Temporarily Free Up RAM but Can Affect System Performance

RAM cleaning tools can provide more free RAM in two ways. On one hand, they terminate "unnecessary" processes and delete data in the cache of the RAM. On the other hand, they temporarily create more RAM capacity by extensively loading the physical RAM. The operating system optimizes the priority for the RAM cleaning tool due to intelligent memory management, shifting other active processes into virtual memory on the hard disk or SSD. The RAM cleaning tool burdens the RAM until this process is complete. The active processes are now stored in virtual memory, and cached data has been deleted. This results in a temporary increase in free RAM, which is displayed as a higher value in the Windows Task Manager. However, this does not provide a permanent solution for insufficient RAM volume and may even worsen performance. After the tool is finished, all open programs are stored in the virtual memory of the hard disk or SSD. Opening these programs will thus take longer until they function again and can be saved back into the fast RAM. Once all processes have been reopened, the physical RAM is again available for usual use. A process stored in the RAM can be quickly initiated and is immediately available, allowing for uninterrupted and fast operation. However, freeing up RAM areas for its own sake is not very useful and does not improve system performance. The only advantage is the cleanup of a potential "memory leak," where a program does not automatically release the allocated RAM upon termination. A simple restart of the system can also resolve this issue.

Using RAM with RAM Manager Tools Compared to RAM Cleaning Tools

In comparison to RAM cleaning tools, RAM Manager Tools utilize the operating system's memory management. These tools ensure that passive processes in Windows are no longer stored in virtual memory on the hard disk or SSD, but in the RAM. This results in more RAM being utilized. When a passive process is started, the performance is noticeably better since it is now read from the RAM and not from the virtual memory of the hard disk or SSD.

A RAM cleaning tool cannot improve PC performance if the RAM is insufficient. If active processes are moved from the RAM to virtual memory, this can worsen performance. RAM manager tools can be useful but require more RAM in the system. The most effective solution for the problem of insufficient RAM remains upgrading the RAM.

How do different memory speeds work together?

Jürgen Hartmann — Thu, 09 Mar 2023 10:51:00 +0000

Can different memory speeds be mixed? - Find out here what to consider!

Upgrading your RAM is a simple way to improve your system's performance. However, many customers wonder whether the new memory is compatible with the existing memory in the system. In particular, the speed of the new memory raises uncertainty. In this article, you will learn whether and why different speeds can be mixed.

Development of new memory technologies and increase in memory capacities by leading manufacturers

Major memory manufacturers like Samsung, Hynix, and Micron continuously develop new memory technologies and increase memory capacities. There are different types of DRAM for various applications in servers, printers, PCs, and notebooks, each offering advantages in their respective environments. With the introduction of new memory technologies, the quality of production also improves. The higher the quality of the memory, the higher the possible memory clock. Manufacturers guarantee the stability of memory modules up to a certain speed, which is indicated on the label. For example, in DDR4 memory, the standard speed in production has increased to 3200MHz, while the capacity for PCs and notebooks has risen from initially 16GB to 32GB. A faster memory with a higher capacity can significantly enhance electronic data processing.

Successfully combining different speeds

Motherboards, memory controllers, and CPUs can adjust the faster modules to the speed of the slower modules. This means that the speed of the faster modules is automatically reduced to match that of the slower modules. For example, if you mix a DDR4-2400MHz module with a DDR4-3200MHZ module, the RAM in dual-channel mode will revert to the lower speed of 2400 MHz. This ensures that all modules in the system work synchronously and compatibility is guaranteed. New memory allows for higher memory clock speeds but is still backward compatible and can operate at slower clock rates.

What to consider when choosing the right memory

However, you need to be cautious when selecting the right memory. There are many unusual solutions on the market that use server DRAM components for PC and notebook memory. These solutions are often cheap but problematic and can impair compatibility with existing memories. The memory that was installed in your system 2-3 years ago has long been replaced by newer, more powerful memories. Therefore, it is essential to choose the right memory for your system to ensure maximum performance and stability. You can find memory from PHS-memory® that contains older timings in the memory SPD to ensure compatibility with your system. The “Fallback Option” in the SPD of PHS-memory® memory allows DRAMs with higher clock speeds to be used together with older memory modules of lower clock frequency. We also check all potential "pitfalls" to ensure that the memory upgrade works successfully.