Will Snow Leopard 32 bit recognize 8gb ram?

Discussion in 'MacBook Pro' started by windnsea26, Aug 24, 2010.

  1. windnsea26 macrumors member

    Joined:
    Jul 10, 2010
    Location:
    San Diego
    #1
    I'm thinking of upgrading to 8gb ram for my Mid 2009 Macbook Pro 15" since I run a few virtual machines for work but was wondering if I can keep running at the 32 bit level or if I need to run Snow Leopard in 64 bit mode?

    Thanks

    I have googled but can't really find much info.
     
  2. windnsea26 thread starter macrumors member

    Joined:
    Jul 10, 2010
    Location:
    San Diego
    #3
    Thanks. I think I'm gonna order a set of Corsair chips from Amazon. $197 shipped with no tax.
     
  3. w00t951 macrumors 68000

    w00t951

    Joined:
    Jan 6, 2009
    Location:
    Pittsburgh, PA
    #4
    Snow Leopard can run both 64 and 32 bit applications, and can address over 64 GB of RAM with the latest 12-core Mac Pro. It all depends on your hardware.
     
  4. windnsea26 thread starter macrumors member

    Joined:
    Jul 10, 2010
    Location:
    San Diego
    #5
    I'm actually running a Macbook Pro 15 (late 2009). I received the ram and installed it. Instead of reformatting my machine and installing 64 bit SL, I just edited some file that now allows me to boot into 64 bit mode instead of pressing "64" everytime I boot.

    Runs great especially with the Windows 7 and Ubuntu VM I have installed!
     
  5. HLdan macrumors 603

    HLdan

    Joined:
    Aug 22, 2007
    #6
    It's completely useless booting into 64Bit. You're only booting into the 64Bit kernel. Snow Leopard is 64Bit regardless and runs your 64Bit apps in full 64Bit without needed to boot with the 6 and 4 command, but if you feel more comfortable doing that, it's fine. BTW, that little file (I think you're talking about) doesn't always work well. Resetting the PRAM and after a few reboots it ends up switching back to the 32Bit kernel. You don't need it.
     

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