Anyone try 1333 or 1600 memory?

Discussion in 'MacBook' started by altecXP, Feb 14, 2010.

  1. altecXP macrumors 65816

    Aug 3, 2009
    I'm planning to upgrade my RAM soon and was wondering if anyone knows if there run at full speed or just get underclocked to 1066.

  2. chrismacguy macrumors 68000

    Feb 13, 2009
    United Kingdom
    Im pretty sure it will run at the slower speed - for example, I put 133Mhz in a G3 iMac - It only runs at 100Mhz. This is due to the limitations of the logic board.
  3. NewMacbookPlz macrumors 68040


    Sep 28, 2008
    The FSB is set to 1066, so faster RAM will just run at the FSB's speed (unless you overclock to a higher bus speed somehow).
  4. altecXP thread starter macrumors 65816

    Aug 3, 2009
    Thanks, i didn't know if the FSB was limited to 1066 or 1333

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