Nehalem/2009 Mac Pro DDR3 speed

Discussion in 'Mac Pro' started by MCHR, Mar 21, 2009.

  1. MCHR macrumors regular

    Mar 13, 2009
    Is it possible for the 2.26 Mac pro to recognize and use the higher speed ram DDR3?

    I'm asking, though it's not readily available, would it further benefit the speed increases in this new architecture?

    Apologies if this is an obvious or stupid question.

    From the Digital Arts online review:

    "The ‘Nehalem’ platform is designed to support DDR3 memory running at 1,333MHz -- but Apple has plumped for 1,066MHz RAM. "
  2. Umbongo macrumors 601


    Sep 14, 2006
    It is unknown at this time. The memory controller supports upto 1066MHz. On the i7 systems this can be changed. Even if it can be changed that doesn't mean it will be able to be on a Mac Pro.
  3. VirtualRain macrumors 603


    Aug 1, 2008
    Vancouver, BC
    It's unlikely that Apple supports higher than JEDEC specs on the RAM. However, as you probably know, higher performance RAM can usually run at lower clocks with tighter timings, so it might be beneficial to use high performance RAM (say DDR3-1600 8-8-8) at default speeds (DDR3-1066) with super low latency timings (e.g.6-6-6) by simply reprogramming the SPD.
  4. DeepCobalt macrumors regular

    Sep 6, 2007
    Over and around
    I asked this question earlier this week (see older forum threads). Actually, only the 2.66 and the 2.93 octads support the 1333 RAM, the 2.26 only support 1066. However, it is not clear any of the new Pros will recognize the faster RAM

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