Will my Macbook run this RAM

Discussion in 'MacBook' started by JSMencer, Mar 14, 2011.

  1. JSMencer macrumors regular

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    Oct 30, 2007
    #1
    I have a late 08 Macbook unibody 5,1 i accidently bought 4gb DDR3-133 PC3 10600, and its reading 5GB because I kept a 1GB stick from the factory in. So its reading 5gb 1067 ddr3. Do i need to return this memory, or am I ok with it.
     
  2. alust2013 macrumors 601

    alust2013

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    #2
    Looks like it will work fine. It will just run the 1333MHz module as a 1067MHz one and your computer won't know the difference.
     
  3. Hellhammer Moderator

    Hellhammer

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    #3
    If your computer boots and runs normally, then there are no issues.
     
  4. JSMencer thread starter macrumors regular

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  5. Hellhammer Moderator

    Hellhammer

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    #5
    One runs at 1333MHz while the other runs at 1066MHz. There may also be difference in the latency and timings. You can mix them though, the 1333MHz will underclock itself to 1066MHz then.
     
  6. JSMencer thread starter macrumors regular

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    #6
    if i bought another stick of this same RAM will my computer bump up to 1333 instead of 1067
     
  7. Hellhammer Moderator

    Hellhammer

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    #7
    No, because the memory controller supports only up to 1066MHz. You wouldn't notice any difference though.
     
  8. JSMencer thread starter macrumors regular

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  9. alust2013 macrumors 601

    alust2013

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    #9
    Correct.
     

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