Why does my computer only show half the RAM I installed?

Dhaval Kaneriya December 13, 2012
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I recently installed 8 GB of RAM on my laptop running Windows 7, but when I go to my computer properties, it says I have only 4 GB of installed memory and 3.74 GB are usable. Where’s the rest of the 8 GB of RAM that I installed?

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  1. Alexandra Momo
    February 2, 2013 at 10:45 pm

    Well, you can always download some more ram if you want to see 8GB in your properties, but it's only for the look. IT'S NOT REAL
    http://www.downloadmoreram.com/

  2. Ahmed Musani
    December 16, 2012 at 9:09 am

    its because of the 32 bit operating system. i would recommend you to install 64 bit since it will utilize all your RAM

  3. Âdil Farôôq
    December 16, 2012 at 6:29 am

    you must install 64bit OS on your system to resolve the issue.

  4. siddharth singh
    December 16, 2012 at 5:34 am

    32 bit = 4 gb max 64 bit =8 gb max .... if you have 64 bit then one of the ram sticks could be lose

  5. Deimarr Callender
    December 16, 2012 at 2:23 am

    You probably have a 32 bit operating system installed. You should upgrade to 64 bit.

  6. ha14
    December 15, 2012 at 11:00 am

    Pushing the Limits of Windows: Physical Memory
    http://blogs.technet.com/b/markrussinovich/archive/2008/07/21/3092070.aspx

    there is a patch to use 8GB of RAm
    http://www.unawave.de/windows-7-tipps/32-bit-ram-barrier.html?lang=EN
    it is up to you to decide to try it, it can cause the windows to be not stable.

    Possible Duplicate:
    How can I enable PAE on Windows 7 (32-bit) to support more than 3.5 GB of RAM?
    Is there way to enable 4 GB RAM in 32-bit Windows OS?

    According to the official windows memory limits, Win 7 only supports 4 GB of RAM
    http://msdn.microsoft.com/en-us/library/aa366778%28VS.85%29.aspx#physical_memory_limits_windows_7

  7. luis donis
    December 14, 2012 at 11:46 pm

    you have to install a 64-bit operating system for you I recognize all RAM

  8. Vishal Srivastava
    December 14, 2012 at 6:38 pm

    As people say above, 32 Bit systems are made to run only a maximum of 4GB RAM. Upgrade your system to 64 Bit for complete utilization of your RAM.

  9. Ray Randall
    December 14, 2012 at 5:58 pm

    XP can only use 3 gigs of ram
    Windows 7 32bit versions can only use up to 4
    64 bit OS is needed for utilizing more than 4 gigs of ram

  10. Ron Lister
    December 14, 2012 at 5:48 pm

    it looks like this has been solved already upgrade to win7 64 bit... but if you do have a 64 bit system and its not recognizing the ram i sugest looking in this MUO article
    http://www.makeuseof.com/answers/64bit-system-375-gb-ram-4-gb-support-8-gb/
    good luck to you hope this helps. it should have came up when you asked your question.

  11. Ahamed Yaseen
    December 14, 2012 at 4:06 pm

    Use x64 bit os to see 8 gb ram in the properties....

    use speecy software.... ( advanced System Information tool )....

  12. Alex Perkins
    December 14, 2012 at 1:48 pm

    You are most likely to be using a 32 bit version of windows 7, 32 bit operating systems can only address (use) almost 4GB of RAM.

  13. Alan Wade
    December 14, 2012 at 12:24 pm

    a) Does your motherboard support 8gig?
    b) I assume you have two 4 gig cards, swap them around i.e. reverse the cards - still the same?
    c) Click on Start then right click on 'Computer' and select 'Properties'.
    How much installed RAM does it say?
    d) Even if you are running 32 bit Windows it should recognise how much you have installed, if you still only see 4 gig then take one of the cards and reboot - does your machine boot normally?
    e) Now swap the cards over - remove the card you just booted with and replace it with the one you took out - does it still boot normally?

    Post back your findings so we can advise you further.

  14. Abba Jee
    December 14, 2012 at 11:34 am

    no it was OS bits problem :)

  15. Abba Jee
    December 14, 2012 at 11:34 am

    lol , you you have to have 64 bit OS to use 8 GB of ram

  16. Jim Chambers
    December 14, 2012 at 5:41 am

    If you have to buy 64 bit OS, get Win 8 Pro 64 bit for only $40.00 instead of $170.00 for Win 7.

  17. Junil Maharjan
    December 14, 2012 at 5:17 am

    Agreeing with the 32-bit OS thing.

  18. Rohit Jhawer
    December 14, 2012 at 3:56 am

    What version of windows are you running (I Suppose its 32-bit).
    If you are using 32-bit version the max memory you can use is 4gb in theory, practically it will be less than that. One more reason could be hardware support, Your motherboard might not support more than 4gb of memory. To answer this we might need more information about your hardware.

  19. Qin Tang
    December 14, 2012 at 2:53 am

    You need to upgrade your OS to the 64 bit.

  20. Declan Lopez
    December 14, 2012 at 2:25 am

    you will need to install Windows 7 x64 version

  21. Alison Gent
    December 14, 2012 at 2:21 am

    upgrade to 64 bit OS and it'll be fine, one reason why is because the older 32 bit is limited in the functionality of the drives.

  22. Hunbuhbhuygb Ygygbgybygb
    December 14, 2012 at 1:10 am

    Install x64 or modify the physical address extension thinggy for it to work with 32 bits.

  23. Arun Vishnu
    December 14, 2012 at 12:59 am

    32 bits can only use upto 4 gb memory

  24. James Maciel
    December 13, 2012 at 11:41 pm

    you have a 32 bit operating system which is limited to about 4 GB of ram. you would have to upgrade to a 64 bit operating system to use all 8 GB

    • Anonymous
      December 14, 2012 at 12:11 am

      Exactly. 32 bit OS could read 4 gigs in theory, but due to hardware limitations of x86 , usually people get around 3.5 gigs.

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