Corsair Mac Memory - Beeping After Replacing RAM on Late 2008 Macbook

Discussion in 'MacBook' started by minky1234, Dec 14, 2012.

  1. minky1234, Dec 14, 2012
    Last edited: Dec 14, 2012

    minky1234 macrumors newbie

    Mar 20, 2008
    I bought this RAM:

    I have read online that with the correct boot ROM (MB51.007D.B03) my computer should support 8gb of RAM.

    When I installed them and try to turn on my macbook I just get 3 beeps.

    I'm pretty sure this is the correct RAM, unless anyone can correct me? Is the RAM bad?

    Oh yeah and I also tried different combinations of the old RAM and new RAM, but the same thing happened until I put the stock RAM back..

  2. old-wiz macrumors G3

    Mar 26, 2008
    West Suburban Boston Ma
  3. minky1234, Dec 15, 2012
    Last edited: Dec 15, 2012

    minky1234 thread starter macrumors newbie

    Mar 20, 2008
    Went back to the store with my Macbook, tried out 3 sets of Corsair RAM and all wouldn't work..

    Then switched for GSkill 8gb (2 x 4gb) PC3-10666 DDR3 1333 MHz and works perfectly! Not sure if Macbooks are picky with Corsair RAM.
  4. brop52 macrumors 68000


    Feb 26, 2007
    Yeah the G. Skill set works well in mine.
  5. chiefpavvy macrumors 6502a

    Feb 23, 2008
    The latest firmware is absolutely required to run 8GB in the late 2008 unibody MacBook.

    And there are some incompatibilities [with some RAM modules by some manufacturers], although I used Corsair modules with no problem. Remember that Corsair makes a zillion different model numbers and you probably just got unlucky with one that it doesn't like.

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