How to use 4GB RAM in Windows 7 32bit

As a Windows 7 64-bit user myself, I rarely write about or even support 32-bit users. However, here are some tips how you can use 4GB of RAM (AND MORE) in Windows 7 32-bit.

Use 4GB of RAM in Windows 7 32-bit

I first learned that using 4GB and more in 32-bit system is possible when I noticed a Linux kernel update with the addition PAE. PAE stands for Physical Address Extension and basically allows you to address more of your memory than the limit of 4GB in 32-bit systems.

So, what we are going to do now is to enable PAE in Windows 7. Then we’re going to install a RAM-disc that can use the extra memory!

Enable PAE in Windows 7

Enable PAE in Windows 7

Click here to learn how to enable PAE in Windows 7

Install RAMdisk to Use 4GB And More RAM

1. Step Download RAMdisk for Windows 7, which you can download here.
Install RAMdisk in Windows 7

2. Step Open the folder where you downloaded it to and right-click on ramdisk.exe, click on Run as administrator

3. Step Click on the button Install Ramdisk

4. Step If you get the message Failed then you need to repeat step 2 and read carefully. Also, you need to REBOOT after enabling PAE above.

5. Step Confirm that you want to install this software

6. Step Reboot

7. Step You should now have a new drive R: verify that

8. Step Open ramdisk.exe again, select Fixed Media and don’t select how much memory you want to assign to the RAM drive (use the default “16″).

Fixed RAM Drive to use 4GB of RAM

9. Step The drive should now be exactly the size of your missing RAM that you normally can’t use in Windows 7 32-bit. So, let’s say you have 8GB of RAM, you can now use additional 4GB of RAM in Windows 7 32-bit. Will give you quite a boost!

10. Optionally, you can Gavotte Ramdisk for your swap memory. However, your swap file should be on your main partition or it will actually slow down your system. Preferably, both on a SSD if you have one.

Using more than 4GB of RAM in Windows 7 makes a lot of sense and will give you a nice boost. All those resource-hungry application simply need a lot of RAM. Unfortunately, more RAM doesn’t mean your PC will be faster because it greatly depends on all components. Your drive, your CPU, your motherboard. So, the slowest component will always slow down your other components in some way. A dedicated SSD for your OS can speed up thins quite noticeable, but you also should not run too many programs at the same time and maintain your PC regularly.

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- Cheers!

Written by:
Oliver is the founder and lead editor of this site. He is interested in finding new ways to break Windows, find common errors and help others to fix them. Aside from that, he loves to fully customize systems with Rainmeter and Dreamscene, find out more about ancient civilizations like the Chachapoya, sharpen his digital photography skills and create software with a small group of selected developers. If you would like to connect with him to discuss anything, send him a mail!

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6 Responses to How to use 4GB RAM in Windows 7 32bit

  1. Orange Community Approved Comment:
    SoulSnatcher said:

    Hey. I have 4G of RAM in my lappie. However it only uses 2.99G of it. I did as above, but the size of the RAMDisk is my laptop is only 16MB. Any ideas?

  2. Orange Community Approved Comment:
    Alan said:

    I did the same thing as the Soul above. I followed all the directions and now I have a perfectly useless 16M ram disk. I can make it larger, but it just comes out of the 3GB Ram I have available and I am still not able to access the last 1GB.

    And in any case, he doesn’t spell out exactly how I will be able to use this memory. As a ram disk only?

  3. Orange Community Approved Comment:
    sOliver said:

    Hi Alan,

    I’m not sure what your problem is, but maybe this new tutorial helps. It’s a bit more complicated and you might have to do some more research but it will allow you to use 4GB RAM on Windows 7 32-bit

    Hope this helps

  4. Orange Community Approved Comment:
    CMadison said:


    After tinkering a bit I just got this to work. The author overlooked one little step between steps 1 and 2. After downloading RAMdisk in Step 1 open the folder where you downloaded it, double-click on “ram4g.reg” and press YES. You should then be notified that the registry has been successfully updated and you can continue to Step 2.

  5. Orange Community Approved Comment:
    agw said:

    As CMadison described above, this works on Win7 32-bit after enabling PAE, loading ram4g.reg, loading ramdisk driver as described, and rebooting. I now have a RAM drive (labeled: RamDisk – PAE) of the size of HW reserved memory in my machine.

  6. Orange Community Approved Comment:
    antonio said:

    So, AGW do you know how to make it actually use the extra 4.7GB ram? (i have 8gigs instaled and did all these steps but now i just have some extra drive with 4.7 gigs on it)

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