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Is RAM limit to 4GB in win7?

    Question

  • Are there any way to force Win 7 32-bit to use the memory more than 4 GB, besides using 64-bit?
    because I need to analyse some data which is very large (it is gene expression data about 8.0GB, and this task need a lot memory in calculation) and if I use x64 the program doesn't be supported.
    Wednesday, May 20, 2009 7:50 AM

Answers

  • Are there any way to force Win 7 32-bit to use the memory more than 4 GB, besides using 64-bit?
    There is no supported way.
    If you really need to address more than 4GB RAM you could try this unsupported trick on your own, although you'd still be stuck with some other limitations in a typical 32bit version of Windows, like 2 GB or 3 GB (with the /3G switch) virtual address space per process...
    • Marked as answer by axfelix Wednesday, June 10, 2009 3:49 PM
    Wednesday, May 20, 2009 9:52 AM

All replies

  • Are there any way to force Win 7 32-bit to use the memory more than 4 GB, besides using 64-bit?
    There is no supported way.
    If you really need to address more than 4GB RAM you could try this unsupported trick on your own, although you'd still be stuck with some other limitations in a typical 32bit version of Windows, like 2 GB or 3 GB (with the /3G switch) virtual address space per process...
    • Marked as answer by axfelix Wednesday, June 10, 2009 3:49 PM
    Wednesday, May 20, 2009 9:52 AM
  • Without the application specifically supporting PAE (as described). 

    It is still a 32 bit application so it still uses the 32-bit pointers and therefore cannot access more than 4GB memory - even where available through PAE.

    You need 64-bit all the way through (hardware, operating system and application) in order to use more memory.
    Wednesday, May 20, 2009 10:32 AM
  • 4GB IS THE MAX LIMIT IN 32 BIT SYSTEMS WITHOUT THE ENTERPRISE SERVER RUNNING
    GET THE 64 BIT VERSION IF YOU WANT TO SEE IT ALL MAKE SURE YOU OWN A 64 BIT CHIP THOUGH
    Wednesday, June 10, 2009 4:51 AM