MBP 8GB mem should I boot 64?

Discussion in 'macOS' started by karupspc, Oct 8, 2010.

  1. karupspc macrumors member

    Joined:
    Feb 11, 2008
    #1
    Hello all

    MBP with 8GB memory, 10.6.4

    My question is: Should I boot into 64 bit or am I ok using 32 with my 8GB memory? I plan on using Vmware Fusion with allocated 512-1GB memory for a machine (no more than 2 running).

    Will OS X handle 8Gb memory efficiently?
     
  2. robbieduncan Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #2
    I have 8Gb of RAM and boot the 32-bit kernel without issues. It happily uses all the RAM (and once or twice could have used more).
     
  3. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #3
    You don't need 64-bit kernel unless you have +32GB of RAM (32-bit kernel can only address 32GB)
     
  4. mac2x macrumors 65816

    Joined:
    Sep 19, 2009
    #4
    I would disagree, though not with the physical memory argument. I've noticed snappier I/O since I started booting x64 (I have 4 GB RAM). Obviously, I can't reap the advantages of the 64 bit address space. It also improved the performance of Photoshop CS5.
     

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