800 MHz RAM in 2007 MBP?

Discussion in 'MacBook Pro' started by strwrsfrk, Oct 10, 2011.

  1. strwrsfrk macrumors regular

    Joined:
    Mar 1, 2011
    Location:
    Arlington, VA, USA
    #1
    Hi all,

    I recently got a mid-2007 MBP off of Craigslist (model A1226). Only has 2GB DDR2-667 RAM. FSB on C2D is rated at 800 MHz. I cannot find any clear answer online as to whether I can upgrade the RAM to DDR2-800 RAM or if I should stick with 4GB DDR2-667. Does anyone have knowledge/experience of this? Does Apple throttle the FSB like I've heard suggested in other forums?

    Thanks.

    (If this is a repost of an old topic, sorry; I could not find it in the forums).
     
  2. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #2
    The RAM should be able to underclock itself in case the memory controller does not support the default 800MHz frequency.
     
  3. Detrius macrumors 68000

    Joined:
    Sep 10, 2008
    Location:
    Asheville, NC
    #3
    That specific model of Mac only supports 667MHz RAM.
     
  4. bizzle macrumors 6502a

    Joined:
    Jun 29, 2008
    #4
    That model will run 800mhz RAM if you only put 1 stick in and another stick of 667. It's kind of bizarre but it just won't boot, period if there are two 800mhz modules installed.
     
  5. strwrsfrk thread starter macrumors regular

    Joined:
    Mar 1, 2011
    Location:
    Arlington, VA, USA
    #5
    Thanks everyone for your help! I'll just stick with 667 MHz RAM to be safe.
     

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