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Frequently Asked Questions (FAQ)

Questions before Purchasing
Questions around Purchasing Process
Questions after Purchasing

FAQ before Purchasing

1. My system is not listed in the database.
How can I find out with what modules I need and how to install them?

The easiest ways is to send us your system information via our online form - you will receive a detailed offer shortly

2. Where on the computer do I find information about its manufacturer or its model indication?

Step 1: The model indication of your notebook is mostly to be found under the keyboard. The model indication of your PC is mostly to be found on the chassis.

Step 2: Enter the exact model indication in our memory search as following: "Notebook Fujitsu ...." resp.. "PC Fujitsu ...." Our system will list all 100% compatible memory for your searched computer.


3. It often happens that the maximum upgradeability is announced higher in the CompuRAM product database than in the original manufacturer's statement.

Our database content is constantly being updated and stays current with each memory manufacturer's compatibility specification for each supported computer manufacturer. New DRAM technologies, memory modules, BIOS- or Software patches often allow a higher upgradeability without limitation but with the same performance and stability as originally announced. Most system manufacturers don't update their existing documentation to inform users of memory enhancements to older systems. CompuRAM keeps you current with new memory options.


4. I found my system in your listed offerings. CompuRAM offers upgrades with identical capacity but with different clock speeds. How do I determine which one is the matching upgrade for me?

Basically you can rely on the fact that all upgrades we matched to certain system models are compatible and mixable. If system upgrades are subject to special specifications we will mention it seperately.

The best option is to buy the upgrade with the highest clock speed, especially because prices often differ slightly. For example 400MHz instead of 333MHz or 1333MHz instead of 1066MHz etc.

Our clock speed indication always refers to the memory module's MAXIMUM possible operation modes.

Despite the still common opinion, DIMM or SO-DIMM don't have an own clock speed but are always being clocked by the system bus.

The maximum, but especially the minimum, memory clock speed is predefined by the memory's possibilities, the chipset, the CPU and often the system's manufacturer. The clock speed justifies itself during the booting process by BIOS routines to maximum possible and secure values.


  • The slowest memory module always determines the clock speed for all RAM installed in the system.
  • Thus you can mix differently "fast" modules carelessly, if we offer them.
  • Your system is justifying itself during the booting process to ideal, stable and secure values.
  • The indication on the modules resp. in the article description refers to the maximum timing values. These values are standardised according to JEDEC and INTEL worldwide.For these standards a different wording is being used. For example: The indications DDR400, PC3200 or 400MHz are basically all the same specifications.
  • For our upgrades, we always use the most current and fastest DRAMs and never old items.
  • That means, that we are tendentially provide upgrades that allow an even higher timing than neccessary for your system.

5. How to order?

You can order your memory modules easily and quickly from our online shop. With only two clicks you will find all compatible memory upgrades for your computer.

Step 1: Depending on whether you have a notebook or PC, you will be able to choose your system's manufacturer under the section "Notebook" or "PC" in the shop. Please make your selection.

Step 2: Now click the name/model identifier of your computer in the list.
One or more 100% compatible upgrade modules for your computer manufacturer will be listed with the associated module price. Please make your selection

To complete the purchase transactions enter in the number of needed memory units into the shopping cart and go to checkout.


6. How to pay?

Available payment options : Payment in advance via bank transfer or PayPal. When collecting personally, you can pay cash or with EC-cash.

Once you have submitted your order, your purchase will be acknowledged via an email order confirmation which will include all payment details as well as a direct link to the PayPal payment.

The main difference between a bank transfer and PayPal option is: A bank transfer usually takes 1-2 working days, whereas PayPal payments are submitted usually within a few hours, thus you will receive your ordered goods faster.

7. How much RAM can be addressed to a Windows 32-bit and 64- bit operating system?

Operating System Maximum Memory (RAM)
Windows RT 32-bit 4GB
Windows 8 32-bit 4GB
Windows 8 Pro 32-bit 4GB
Windows 8 Enterprise 32-bit 4GB
Windows 8 64-bit 192GB
Windows 8 Pro 64-bit 512GB
Windows 8 Enterprise 64-bit 512GB
Windows 7 Starter 32-bit 4GB
Windows 7 Starter 64-bit 8GB
Windows 7 Home Basic 32-bit 4GB
Windows 7 Home Basic 64-bit 8GB
Windows 7 Home Premium 32-bit 4GB
Windows 7 Home Premium 64-bit 16GB
Windows 7 Professional 32-bit 4GB
Windows 7 Professional 64-bit 192GB
Windows 7 Enterprise 32-bit 4GB
Windows 7 Enterprise 64-bit 192GB
Windows 7 Ultimate 32-bit 4GB
Windows 7 Ultimate 64-bit 192GB
Windows Vista Home Basic 32-bit 4GB
Windows Vista Home Basic 64-bit 8GB
Windows Vista Home Premium 32-bit 4GB
Windows Vista Home Premium 64-bit 16GB
Windows Vista Business 32-bit 4GB
Windows Vista Business 64-bit 192GB
Windows Vista Ultimate 32-bit 4GB
Windows Vista Ultimate 64-bit 192GB
Windows Vista Enterprise 32-bit 4GB
Windows Vista Enterprise 64-bit 192GB
Windows XP Home 32-bit 4GB
Windows XP Professional 32-bit 4GB
Windows XP Professional 64-bit 128GB


FAQ around Purchasing Process

1. How is the purchasing process?

Step 1: Choose compatible Product
A detailed answer can be found under "FAQ before Purchasing - 7. How to order?"

Step 2: Putting Items into Shopping Cart
A choice can be made to go directly to checkout or continue shopping to purchase additional items.

Step 3: Go to Checkout
Current payment options are to pay in cash or EC-cash on collection, via payment in advance or, when using PayPal, also with EC-cash or credit card. Moreover you may choose delivery with DHL or collection here.

Step 4: Order Overview
Here you can review your order including all order information for completeness, as well as agree to our Terms and Conditions and the Declaration of Revocation.

Step 5: Send Order
After making your purchase you will receive an acknowledgement of receipt as well as an order confirmation icluding all payment details via email.

Step 6: Transfer Purchase Price
Once a finacial payment is confirmed usually within 2-3 working days or as in the case of PayPal usually within a few hours Speicherbauer completes the order process by turning over the purchase to DHL for delivery.

Schritt 7: DHL-Tracking
You will receive an email from DHL including a special routing link with your tracking information; you will be able to track your shipment until arrival of the package.


FAQ after Purchasing

1. Why are my 4GB, 8GB or more memory modules not usable completely?

Due to PC architectural requirements such as motherboard resources and OS limitations, platforms using larger memory may be unable to take full advantage of all memory populated on the system. When systems with chipsets that support 4GB or more of system memory are populated with 4GB or more, the Operating System (OS) may report a lower amount of available memory. Standard PC Architecture System Resources require addressing which overlaps physical memory below 4GB:

System BIOS

Motherboard Resources (I/OxAPIC)

Memory Mapped I/O PCI Express* Configuration Space

Additional PCI Device Memory (Graphics Aperture)

VGA Memory

Others as included, etc..

These requirements may reduce the addressable memory space available to and reported by the Operating System. These memory ranges, while unavailable to the OS, are still being utilized by subsystems such as I/O, PCI Express and Integrated Graphics and are critical to the proper functioning of the PC.


Please find detailed explanations about this topic from Microsoft's view here:


2. What to do, if the RAM doesn't work after installation?

Step 1: Using the following link you may find a collection of possible reasons for the most common problems and solutions when upgrading memory:

Step 2: If your memory still isn't working after completion of Step 1, please send us an email with a short description of your problem to our support team via or directly to You will get a solution suggestion from our support team promptly.

Step 3: If it is determined by our support staff your memory isn't working at all, you will be issued a return numer and a DHL return label. Please return the modules to Speicherbauer. You will then receive an appropriate exchange.


3. Where do I open my notebook to install memory?
How do I install memory by myself?

This differs from manufacturer to manufacturer. Some notebook manufacturers install the memory module(s) downside of the notebook, often inscribed with "Memory", some manufacturers install the memory on the side.

Video Tutorials:

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Latest Price Update: 23th October 2014
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