Differences in RAM Speed

Discussion in 'MacBook Pro' started by ahdickter, Jan 3, 2012.

  1. ahdickter macrumors 6502

    Joined:
    Jun 12, 2011
    Location:
    Pittsburgh, Pennsylvania
    #1
    I've been thinking up upgrading to 16GB of RAM in my 2011 15" MacBook Pro (I like screwing with Windows using VM Ware too much). Does it matter whether I purchase 1333mhz or 1600mhz RAM? I know the logic board will accept both, but will the faster clocked memory improve performance noticeably?
     
  2. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #2
    I'm not sure, but I believe 1600mhz doesn't go much faster then 1%-2%. The current limitation is the CPU.
     
  3. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #3
    The performance difference is negligible. Unless 1600MHz is only a few bucks more expensive, go with the 1333MHz.
     
  4. ml.sail1 macrumors regular

    Joined:
    Aug 23, 2010
    Location:
    Pittsburgh
    #4
    As stated above, the performance gain is minimal, however it is to my understanding that the one thing that will benefit from the increased speed is the iGPU, since is uses shared memory.
     
  5. theSeb macrumors 604

    theSeb

    Joined:
    Aug 10, 2010
    Location:
    Poole, England
    #5
    Correct, but the difference in the real world is about 1 fps extra when using OpenGL.

    I've done some benchmarks to compare

    http://forums.macrumors.com/showthread.php?t=1293809
     

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