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FREE, NEXT DAY Delivery to UK
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30 DAYS MONEY BACK Return Policy
Return Policy
FREE, NEXT DAY Delivery to UK
to UK
10 YEARS WARRANTY Guaranteed
Long Warranty [Gaming PC 2y, SSD 1y]

FREE Next Day Delivery For Orders Before 3PM

NEW XUM 8GB DDR3 PC3L-14900 1866MHz 240 ECC Unbuffered Desktop Memory RAM


Out of stock


Free Next Day Delivery

for orders before 3pm


60 Days Money Back

Return Policy

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Ships same day if ordered before 3pm
Bus Speed:
PC3-14900 (DDR3-1866)
Memory Type:
DDR3L (Low Voltage)
Low - 1.35V
Data Integrity:
Form Factor:
Item SpecificationsWhy buy from us?
Form Factor UDIMM (Unbuffered Dual Inline Memory Module)
Size 8GB
Technology DDR3 SDRAM
Pins 240-pin, Gold Connectors
Bus Speed 1866MHz (PC3-14900)
Data Integrity ECC Unbuffered
Latency CL11
Voltage Low - 1.35V
Spec DDR3 PC3L-14900 1866MHz 240-pin UDIMM ECC Unbuffered
Device Desktop
Brand XUM
Warranty Lifetime

We are UK's number one memory seller on eBay. We have been in this field for number of years, and have established ourselves as one of the main suppliers of computer memory worldwide.
All of our NEW condition stock has gone through intensive manufacturing test procedures, and comes with long term warranty (2+ years). For new items, chip-sets used are from the main manufacturers: Samsung, Micron, Hynix, Kingston,...

All of our used items are original (No Chinese Copies). They come from our sources and contracts with most major IT recycling centres in the UK, Germany and France. They are all tested thoroughly using Ramcheck memory testers, Memtest and CPUZ.

Due to our robust testing procedure we are able to provide long term warranty with our items.

This memory is designed to operate at maximum speed in dual channel. The modules have been tested for compatibility and power.



We always show actual pictures. Please study the pictures which are for a typical item so you have a clear idea of what you're getting and avoid any surprises.

We attempt to post by next day delivery where possible.

Buy from trusted British sellers

If you have any other questions, please get in contact through eBay or email.


Comes with our Lifetime parts and labour warranty. The warranty is with us and not the manufacturer (Unless we are the manufacturer of the product). 

If a product is found to be faulty or defective within 30 days of purchase we will also offer full refund of the purchase price including any postage costs. 

The guarantee will only cover manufacturer faults and does NOT cover the following: damage caused by liquid, damage caused by dropping the product or intentional mistreatment, damage caused by attempting to repair or adapt the product by yourself.


We have a no quibble 30 days return policy. We accept returns for any reason within 30 days of you receiving this item. You can either contact us to let us know you wish to return the items or simply post the item back to us to receive an immediate full refund. Please be aware that the only way we can send you a replacement item will be if you contact us directly.

To make sure the return is as easy as possible for you we have created a PRE-PAID postage label (UK customers only). Please attach the label to your parcel. Drop off your parcel at your local Post Office branch and ask for proof of postage if required.

bus speed
Bus Speed:
PC3-14900 (DDR3-1866)
memory type
Memory Type:
DDR3L (Low Voltage)
Low - 1.35V
data integrity
Data Integrity:
form factor
Form Factor:

Memory RAM Installation Guide for Desktop Computer

Step 1

Equipment required:

  • Memory RAM modules
  • Screwdriver (non-magnetic-tip)
  • Owner’s manual
Step 1: Equipment required

Step 2

  • Shut Down Your Computer:

    Make sure to properly shut down your computer through the operating system.

  • Unplug the Power Cable:

    Remove any cables connected to the computer, including the power cable.

  • Hold the Power Button:

    Press and hold the power button for 5 seconds to discharge any residual electricity.

  • Open the Case:

    Consult the owner’s manual for instructions on how to open your specific system’s case.

Step 2: Shut Down Your Computer

Step 3

  • Ground Yourself:

    Touch an unpainted metal surface to discharge static electricity. Better yet, wear an anti-static wrist strap attached to a grounded object.

  • Locate the RAM Slots:

    Open the case and locate the RAM slots on the motherboard.

    • Remove Existing RAM (if applicable):
    • Press down on the clips at the ends of the RAM slot.
    • Gently remove the existing RAM module by holding the edges.
Step 3: Installation

Step 4

  • Install New RAM:

    • Hold the new RAM module by the edges.
    • Align the notch on the module with the key in the slot.
    • Firmly press the RAM into the slot until the clips snap into place. It may require about 30 pounds of pressure.
    • Close the Case: Once all the RAM modules are securely installed, close the computer case.
    • Reconnect Cables: Plug in the power cable and any other cables you disconnected.
  • Power On and Test:

    Turn on your computer. It’s recommended to enter the BIOS to ensure the new RAM is recognized and running at the correct speed.

Step 4: Install New RAM


  • Check System Properties: Once your computer has booted into the operating system, check the system properties to confirm that the new RAM is detected and usable.
  • Enjoy Your Upgraded Computer: You should now notice improved performance, especially when running memory-intensive applications.

Step0: Memory RAM Installation Guide for Desktop

Remember to handle the RAM modules carefully and avoid touching the gold connectors. Always work in a clean, static-free environment, and if you’re unsure about the process, seek professional assistance. Happy upgrading!

Happy upgrading!

How to Check Memory RAM in Your Desktop PC:

Make sure you are using a desktop computer because the RAM installation instructions are designed specifically for desktop computers.

Step0: How to Check Memory RAM in Your Desktop

Step 1: Identify Installed Memory

Press the Windows key + R to open the Run dialogue box.

Type "msinfo32" and press Enter. This opens the System Information window.

How to Check Memory RAM in Your Desktop

In the left pane, navigate to "System Summary". On the right side, you'll see details about your installed memory, including the total installed physical memory (RAM).

How to Check Memory RAM in Your Desktop


Using Command Prompt to Convert Memory Size to GB

Open Command Prompt by pressing the Windows key + R and typing "cmd" into the search bar.

How to Check Memory RAM in Your Desktop

Open Command Prompt by pressing the Windows key + R and typing "cmd" into the search bar.  type the following command: "wmic memorychip get capacity" In the Command Prompt window, then Press Enter. This command will display the capacity of each memory module in kilobytes (KB).

How to Check Memory RAM in Your Desktop

  • To convert KB to GB, divide the capacity by 1,048,576 (1024 * 1024).
  • For example, if the capacity is displayed as 4294967296 KB, the calculation would be:
  • 4294967296 KB / 1048576 = 4096 GB
  • 4194304 KB / 1048576 = 4 GB
  • Repeat this calculation for each memory module listed to determine the total memory size in GB.

Step 2: Maximum RAM Capacity

The maximum amount of RAM your computer can support is as follows:

  1. Press Windows Key + R, type cmd, and press Enter.
  2. In the command prompt, type wmic memphysical get maxcapacity, and press Enter.
  3. The result will be displayed in Kilobytes. Convert this to Gigabytes by dividing by (1024) twice. For example:

To calculate the maximum RAM capacity for a computer that supports up to 8GB:

  1. 10248388608KB​=8192MB
  2. 10248192MB​=8GB
  3. Thus, the maximum memory capacity is approximately 8 GB.

How to Check Memory RAM in Your Desktop

Step 3: RAM Slot Information Through Command Prompt.

  1. Press the Windows Key + R to open the Run dialog box.
  2. Type "cmd" and press Enter to launch Command Prompt.
  3. In the Command Prompt window, type: wmic Memphysical get MemoryDevices Then, press Enter.
  4. The number displayed represents the total number of RAM slots on your computer. For Example, if it shows '2', your computer has two slots.

To determine the maximum capacity per slot, divide the total maximum RAM by the number of slots. For example, if your system has a maximum capacity of 8 GB and 2 slots, each slot supports up to 4 GB.

How to Check Memory RAM in Your Desktop

Step 4: Slot Information Through Task Manager

Press Ctrl + Shift + Esc together to directly open the Task Manager.

Alternatively, press Ctrl + Alt + Delete, then select "Task Manager" from the options menu that appears.

Another alternative is to right-click on the taskbar and select "Task Manager" from the context menu.

Click on the "Performance" tab in the Task Manager window. In the left pane, click on "Memory". This will display information about your system's memory usage.

Look for the "Slots used" field under the "Memory" section. This indicates the number of memory slots currently in use.

How to Check Memory RAM in Your Desktop

Step 5: To identify the required generation of RAM:

  1. Open Task Manager with Ctrl + Shift + Esc or by right-clicking the Start button.
  2. Navigate to the ‘Performance’ tab to find the RAM generation (e.g. DDR3, DDR4). RAM generations are not interchangeable.

Step 6: Check Memory Speed

  • In the same Memory section of the System Information window, look for the "Speed" field.
  • The speed will be listed in megahertz (MHz) and indicates the frequency at which the memory operates.

How to Check Memory RAM in Your Desktop

Step 7: System Memory Support

Determine your system's architecture using either of the following methods:

Option 1: Using Command Prompt

  • Press the Windows Key + R to open the Run dialog box.
  • Type "cmd" in the command prompt window and then press Enter.
  • In the Command Prompt window, type: wmic os get OSArchitecture Then, press Enter. This command will display whether your system is running a 32-bit or 64-bit version of Windows.

How to Check Memory RAM in Your Desktop

Option 2: Check System Memory Support.

  • Press the Windows Key + R to open the Run dialog box.
  • Type "msinfo30" in the Run dialog box to open the system information, then Press Enter.
  • In the System Information window, look for the "System Type" under the "System Summary" section. This command will display whether your system is running a 32-bit or 64-bit version of Windows.

Based on your system's architecture, understand the following limitations:

  • For 32-bit Windows: The maximum amount of RAM supported is typically around 4 GB, although this can vary depending on the specific version of Windows and any limitations imposed by hardware or software.
  • For 64-bit Windows: The maximum amount of RAM supported varies depending on the specific edition of Windows. For example, Windows 10 Home supports a maximum of 128 GB of RAM, while Windows 10 Pro and Enterprise support up to 2 TB of RAM.

How to Check Memory RAM in Your Desktop

FAQs for Desktop Memory RAM

Q What is the role of RAM in a desktop PC?

RAM allows your PC to access data quickly, improving performance for tasks like loading applications and multitasking.

Q How do I choose the right RAM for my desktop PC?

Choosing the right RAM for your desktop PC involves considering the type (DDR3, DDR4), capacity, speed, and compatibility with your motherboard. To ensure you select compatible RAM, we’ve provided a detailed guide through the ‘How to check Desktop RAM’ tab on our Product page. This guide will help you check your current RAM specifications and understand the requirements for upgrading or adding new memory to your system.

Q What is the difference between single-channel and dual-channel RAM configurations?

Dual-channel configurations can double the data transfer rate compared to single-channel, enhancing performance.

Q Can I mix RAM sticks with different speeds?

It’s possible, but all RAM sticks will run at the speed of the slowest stick, which may not be optimal.

Q What is latency in RAM, and why does it matter?

Latency refers to the delay before data transfer begins. Lower latency means faster data access and better performance.

Q Is there a limit to how much RAM I can add to my PC?

Yes, the motherboard has a maximum RAM capacity and a number of slots that limit the amount of RAM you can install.

Q How can I check my PC’s current RAM usage?

For a detailed guide on checking your desktop PC’s RAM usage, please visit our Product page and click on the ‘How to Check Desktop RAM’ tab.

Q What are the benefits of having more RAM in my desktop PC?

More RAM can improve system responsiveness, allow for more open applications, and enhance gaming and content creation experiences.

Q Will adding more RAM speed up my PC?

If your PC is slow due to insufficient RAM, adding more can speed it up. However, if the CPU or storage is the bottleneck, more RAM won’t help.

Q What is ECC RAM, and do I need it?

ECC (Error-Correcting Code) RAM can detect and correct data corruption, typically used in servers and workstations.

Q How do I install new RAM in my desktop PC?

For a complete guide on installing new RAM in your desktop PC, please refer to the ‘How to Install Desktop RAM’ section located on our Product page. This resource provides you with step-by-step instructions to ensure a correct and safe installation.

Q Can RAM affect gaming performance?

Yes, sufficient RAM is crucial for smooth gaming, especially for games with large maps and high-quality textures.

Q What is the difference between RAM and VRAM?

VRAM (Video RAM) is dedicated to the graphics card for rendering images, while RAM serves the entire system.

Q How do I know if my RAM is failing?

Symptoms of failing RAM include frequent crashes, blue screens, and data corruption.

Q Can I use RAM from my old PC in my new build?

If the RAM is compatible with the new motherboard and meets the required specifications, you can use it.