Correct RAM

Discussion in 'MacBook Pro' started by Mobius 1, Jun 13, 2011.

  1. Mobius 1 macrumors 6502

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  2. fat jez macrumors 68000

    fat jez

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    #2
    for a 2010 or 2011 model, yes. Not sure about the earlier ones (I think the 2009 takes DDR3 as well).
     
  3. AppleNewton macrumors 68000

    AppleNewton

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    #3
  4. fat jez macrumors 68000

    fat jez

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    #4
    12800 is faster than you need, but it will run at the slower speed in the MBP or iMac (which clocks the ram at 1333MHz, the ones you listed can run up to 1600MHz). I don't think you'll get the benefit of the faster RAM though, as I don't believe the MBP will run it at 1600MHz. I'd just buy cheaper stuff that runs at 1333MHz.
     
  5. MacsOnAnabolics macrumors regular

    MacsOnAnabolics

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    #5
    The top of the line 15" and 17" MBPs containing Sandy Bridge processors (i.e. i7 quad-cores 2.2ghz and 2.3ghz) will support and run RAM speeds up to 1600mhz. I would know I have it install (see sig).

    However, this model that you have selected WILL NOT WORK. This is because of the designator "/8GX." The "X" stands for intel's XMP which is not supported. Nevertheless, find a model that ends in "/8G" and you should be fine. The one I installed and works perfectly is here which is, unfortunately, out of stock.
     
  6. fat jez macrumors 68000

    fat jez

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    #6
    My understanding is that XMP just makes use of bytes 176-255 which are not currently used in the JEDEC standard to provide tighter timings for Intel systems. Given that the JEDEC SPD settings should still be present in the RAM, any other motherboard should be able to read those and set the RAM speeds accordingly. I'd be interested to see any information to the contrary though. :)
     
  7. Mobius 1, Jun 13, 2011
    Last edited: Jun 13, 2011

    Mobius 1 thread starter macrumors 6502

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    #7
    then which is the 8GB 1600MHz?

    oh and yes, it's a 15" 2.2GHz with thunderbolt port


    EDIT: nvm, just have to wait for this

     

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