Mac pro 2.66 cpu upgrade

Discussion in 'Mac Pro' started by Enny5, Oct 24, 2011.

  1. Enny5 macrumors member

    Apr 21, 2010
    Hi guys with this firmware hack going from 4.1 mac pro to 5.1 i read that i will be able to upgrade my cpu, where i was told that it is imposable to do this in 2009 2.66 mac pro 4.1.

  2. Umbongo macrumors 601


    Sep 14, 2006
    With a 4,1 Mac Pro you can upgrade the processor to any Nehalem based Xeon 3500 Core i7 9xx processor. These are only 4-core processors and I would recommend the Xeon W3565 which is a 3.2GHz quad-core for around $300 new.

    With the 5,1 firmware you are able to use Westmere based Xeon 3600s and Core i7 9xx processors which have 6 cores. Here I would recommend the W3680 which is a 3.33GHz 6-core for around $600.

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