MBP RAM upgrade to 1333?

Discussion in 'MacBook Pro' started by hlkc, Sep 20, 2010.

  1. hlkc macrumors regular

    Jan 15, 2008
    Looking to upgrade the RAM from 4G to 8G in my latest MBP.

    Have some luck with Kingston before and stock is only using 1066MHz. Any problem if I go up to 1333MHz, see below spec?

    Product Description Kingston memory - 4 GB - SO DIMM 204-pin - DDR3
    Storage Capacity 4 GB
    Upgrade Type System specific
    Technology DDR3 SDRAM
    Form Factor SO DIMM 204-pin
    Memory Speed 1333 MHz ( PC3-10600 )
    Data Integrity Check Non-ECC
    Features Unbuffered
    Manufacturer Warranty Limited lifetime warranty

  2. hasebe macrumors newbie

    Aug 2, 2009
    As far as I know the memory specification that is recommended is PC3-8500, that is 1066MHz. So if you put PC3-10600 memory the MBP will just downgrade the memory to that speed. Also PC3-10600 usually has higher latency but you wouldn't notice that in real world usage.

    It should work but the only way is to test it because the MBP is quite picky when it comes to memory so you cannot assume any generic DDR3 vendor will be compatible regardless of their speed.

    I have the 2x4GB KVR PC3-8500 CL7 and it's been working great in my MBP i7.
  3. TopHatPlus macrumors 6502

    Aug 1, 2010
    Southern Ontario
    hmm interesting question, i thought about this myself, from what i understand the processors in the macbook pros are rated for 800-1066 mhz drr3 ram and up to 8 GB, so i really do not know you would have to ask an apple technician and let me know =D
  4. snaky69 macrumors 603

    Mar 14, 2008
    The computer will simply clock down the ram to the normal speed. It won't do any good to buy higher clocked ram.

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