New Macbook Booting to 64Bit

Discussion in 'MacBook' started by ncfuser, Nov 23, 2009.

  1. ncfuser macrumors regular

    Joined:
    Oct 24, 2007
    #1
    Just got a the New 2.26GHz Intel Core 2 Duo Unibody Mackbook on Saturday.
    I was just checking things out and I found out that it was in 64-bit mode.

    Its right out fo the box, I never checked anything nor am I holding down the 6 and the 4 while booting.

    Is this now standard for it to boot in 64 bit out of the box?

    Thanks
     
  2. celticpride678

    Joined:
    Feb 15, 2009
    Location:
    Boston, MA
    #2
    Are your applications running in 64-bit or in the actual kernel and extensions running in 64-bit? To tell this, go to the System Profiler>Select "Software". Then, look at "64-bit Kernel and Extensions"- YES (true 64-bit), NO (applications).
     
  3. NewMacbookPlz macrumors 68040

    NewMacbookPlz

    Joined:
    Sep 28, 2008
    #3
    Another way to check is to go to your activity monitor and see if the kernel is listed as Intel or Intel (64-bit).

    All apps can run in the 64-bit space despite the kernel being 32-bit, so yeah...

    Perhaps though they enabled 64-bit kernel support on the newest white unibody MacBooks *shrug*
     
  4. DEE9299 macrumors 6502a

    DEE9299

    Joined:
    Oct 3, 2009
    Location:
    Boston Mass.
    #4
    is there and added benefit to running in 64 as to 32?
     
  5. ncfuser thread starter macrumors regular

    Joined:
    Oct 24, 2007
    #5
    States No.

    Got you.
    I was missing reading on how to check.
    I thought this was telling me I was in 64 mode:
    ioreg -l -p IODeviceTree | grep firmware-abi

    But only tells me I "can" boot in 64.

    Sorry.
     
  6. NewMacbookPlz macrumors 68040

    NewMacbookPlz

    Joined:
    Sep 28, 2008
    #6
    On a MacBook? No.
     
  7. Catfish_Man macrumors 68030

    Catfish_Man

    Joined:
    Sep 13, 2001
    Location:
    Portland, OR
    #7
    Basically no. There's a theoretical performance advantage, but I've never been able to measure it, even with fairly powerful analysis tools and benchmark apps that I wrote specifically to show it. It's primarily useful for very large memory systems (i.e. not a macbook).

    It might help VMWare performance a bit. I haven't checked that.
     

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