4GB of PC3-12800s vs 8GB pc3-10600s in a MacBook Pro

Discussion in 'MacBook Pro' started by h4lp m3, Nov 2, 2015.

  1. h4lp m3 macrumors 6502

    Jun 29, 2011
    New Orleans
    I have a MacBookPro9,1 and it came with (2) 2GB sticks of PC3-12800 for a total of 4GB.
    My friend gave me an 8GB kit of pc3-10600s and I installed it and it works!

    So my question is: Will 8GB of 10600s give me better performance than 4GB of 12800s?
  2. simonsi macrumors 601


    Jan 3, 2014

    Only if you need >4GB...what does you RAM pressure graph in the Activity Monitor show?

    If you do <need> >4GB then 8GB of <slower> will be better than 4GB of <faster>
  3. cycledance Suspended

    Oct 15, 2010
    8gb will definitely make a much bigger impact on performance.

    for best performance get 2 x 8gb 204-pin PC3-12800 (1600 MHz) CL9 DDR3 SO-DIMM

    yes, your mbp supports 16gb ram.

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