Windows 8 and 8.1 Forums


8GB RAM but only 3.35GB Usable

  1. #1


    Posts : 3
    Win 8 32 Bit

    8GB RAM but only 3.35GB Usable


    Hello, I have 8GB of ram on my computer and I have 32bit Windows 8 OS. But my computer says "8 GB (3.35 GB usable)" why is this? I am struggling to solve this and appreciate if anyone could solve this immediately as I have some high priority work to deliver!

    Thanks,
    -Srujan

      My System SpecsSystem Spec

  2. #2


    You will have to go to 64 bit Windows to utilize all of your ram...
      My System SpecsSystem Spec

  3. #3


    Posts : 3
    Win 8 32 Bit


    Is there any other temporary go?
    As I do not have much time to re-Install 64 bit OS, Config my Internet settings and install mandatory softwares.
      My System SpecsSystem Spec

  4. #4


    32 bit Windows is limited to 4 GB RAM by the license agreement. Also, a 32 bit OS has only a 4 GB address space, some of which must be used for other things other than RAM. Typically about 3 to 3.5 GB will be available. A 64 bit OS can support much more RAM.
      My System SpecsSystem Spec

  5. #5


    Posts : 3
    Win 8 32 Bit


    Thanks a lot Holt and Miller for your valuable feedback.
      My System SpecsSystem Spec

  6. #6


    The replies are interesting but not exactly correct.

    I'm running a 32-bit OS on several Linux distros, and ALL of them can address ALL of the 8GB of memory I have. But, I also have a 64-bit processor, and in Linux, it is running in PAE mode.

    As an experiment, I downloaded and ran a patch that would allow 32-bit Windows to also see all the memory -- and it worked just fine! I used it for several weeks and never had any problems with it.
      My System SpecsSystem Spec

  7. #7


    There is no technical reason why 32 bit Windows could not access more than 4 GB RAM. Windows 2000 Advanced server was able to do that with PAE, a method simpler than that used in 64 bit Windows. Some 32 bit server editions are able to access as much as 32 GB RAM using the same method. Some Linux distributions can do the same.

    PAE has no implications for applications but it does for some device drivers. As Microsoft discovered back in XP days some device drivers behave very badly in a system with more than 4 GB RAM. Microsoft decided to solve the problem by not allowing memory above 4 GB in 32 bit client versions of Windows. The problem was largely with some audio and high performance video drivers which were rarely used in servers.

    The 4 GB RAM maximum is a licensing limit enforced by the kernel. A patch does exist to circumvent this limit but using it is a violation of Windows EULA. I will not discuss it.

    I have tried to keep all of this simple to understand so it may not be 100% accurate.
      My System SpecsSystem Spec

  8. #8


    USA
    Posts : 689
    Windows 8.1 Pro with Media Center


    Quote Originally Posted by LMiller7 View Post
    There is no technical reason why 32 bit Windows could not access more than 4 GB RAM. Windows 2000 Advanced server was able to do that with PAE, a method simpler than that used in 64 bit Windows. Some 32 bit server editions are able to access as much as 32 GB RAM using the same method. Some Linux distributions can do the same.

    PAE has no implications for applications but it does for some device drivers. As Microsoft discovered back in XP days some device drivers behave very badly in a system with more than 4 GB RAM. Microsoft decided to solve the problem by not allowing memory above 4 GB in 32 bit client versions of Windows. The problem was largely with some audio and high performance video drivers which were rarely used in servers.

    The 4 GB RAM maximum is a licensing limit enforced by the kernel. A patch does exist to circumvent this limit but using it is a violation of Windows EULA. I will not discuss it.

    I have tried to keep all of this simple to understand so it may not be 100% accurate.
    Good post. Right on.
      My System SpecsSystem Spec

  9. #9


    Posts : 209
    Windows 8.1 (HOME not Pro) 64bit


    and the real problem can be averted with no problem by taking 30 minutes out of you apparently insanely busy day to just install windows 64 bit version..

    but i understand if you can't pay for or whatever god knows reason why you wouldn't just install the 64 bit..

    what kind of system do you have? it will take 30 minutes out of your 24 hour day...
      My System SpecsSystem Spec

  10. #10


    Posts : 209
    Windows 8.1 (HOME not Pro) 64bit


    and even way better i refer you to this post..

    Question on system architectures.
      My System SpecsSystem Spec

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8GB RAM but only 3.35GB Usable
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