Does Snow Leopard allow you to use 8GB in older MBPs?

Discussion in 'MacBook Pro' started by LoneWolf121188, Nov 18, 2009.

  1. LoneWolf121188 macrumors 6502a

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    #1
    I know you couldn't under Leopard, but I was wondering if someone had tried doing this since the release of Snow Leopard. I know the latest MBPs all support 8GB of RAM, so I was hoping Apple now is letting some of the older MBPs do the same thing.
     
  2. r.j.s Moderator emeritus

    r.j.s

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    #2
    IIRC, the limit is hardware based, not software.
     
  3. iBookG4user macrumors 604

    iBookG4user

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    #3
    No, it would not. The limitation is due to the hardware.
     
  4. LoneWolf121188 thread starter macrumors 6502a

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    #4
    It's a limitation imposed by the EFI, not the hardware. All the chipsets used in the MBP since Santa Rosa (maybe even before...) support a max of 8GB.
     
  5. LedCop macrumors regular

    LedCop

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    #5
    There is one thread where a user has reported than running Snow Leopard in 64-bit kernel mode on his late 2008 Unibody MBP (2.53 GHz) has allowed him to use 8GBs of RAM without any problems.

    Unfortunately, that hasn't been tested on the 2.4 GHz version or the classic MacBook Pros.
     
  6. rgarjr macrumors 603

    rgarjr

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    #6
    Why is that that every update they bump the limit up higher? Can't they just leave it at a really high limit.
     
  7. LoneWolf121188 thread starter macrumors 6502a

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    #7
    Really? Mind posting a link to the thread?
     
  8. santos79 macrumors regular

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  9. madog macrumors 65816

    madog

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    #9
    The almighty MacTracker knows all.

    The only thing I can imagine is the lower limit imposed by Apple for the product (possibly because of cost, availability, firmware, etc.), versus the actual physical limitation of the hardware. Many times the two are different with Apple's initially being lower.
     
  10. LedCop macrumors regular

    LedCop

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    #10

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