Interesting Early 2011 15" 2.0 MBP Issue

Discussion in 'MacBook Pro' started by floaty83, Jun 14, 2013.

  1. floaty83 macrumors newbie


    Mar 30, 2009
    Springfield, MO
    So, I just bought some upgrades for my Early 2011 15" 2.0GHz Core i7 MBP. I got a 256GB Samsung 840 Pro SSD and 16GB (8x2) Crucial Brand RAM. Everything installed just fine, fresh new copy of 10.8.4. Ran Apple Hardware Test - Everything OK No problems found.

    Both Intel and Apple state the 2.0GHz i7-2635qm in my machine is only capable of 1333MHz memory. I purchased 2 sticks of Crucial #CT102464BF1339 8GB memory which is rated at 1333MHz with a voltage of 1.35V.

    My machine now shows the memory running at 1600MHz. Both the OS, System Diagnostic, and Apple Hardware Test show 1600MHz. Is this possible?
  2. tinix macrumors newbie

    Jun 14, 2013
    It is theoretically possible if the RAM and the Mac support Intel X.M.P (Extreme Memory Profile) which overclocks the ram by a bit and adjust related stuff on motherboard. But Im not sure if the macs support this and if the ram has the profile, because there is nothing about it on the vendors site.

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