Can I use non-ECC / non-registered ram in Mac Pro 2009?

Discussion in 'Mac Pro' started by omvs, May 17, 2014.

  1. omvs macrumors 6502

    Joined:
    May 15, 2011
    #1
    The supported ram for my single-socket 2009 machine is apparently registered/ECC. However, I'm curious if I can get away with non-ECC and/or unbuffered, especially if I'm not using the 4th slot and not mixing with other memory types.

    I'm also planning to up the firmware to 2010 and drop in a W3580 if that makes any difference.

    Thanks!
     
  2. 666sheep macrumors 68040

    666sheep

    Joined:
    Dec 7, 2009
    Location:
    Poland
    #2
    Yes, you can. If you want to go this route, you can as well choose i7 9xx instead of Xeon, especially if you'll manage to get one cheaper than Xeon.
     
  3. omvs thread starter macrumors 6502

    Joined:
    May 15, 2011
    #3
    That's interesting! Is there a list of i7's that are known to work with the firmware?
     
  4. Umbongo macrumors 601

    Umbongo

    Joined:
    Sep 14, 2006
    Location:
    England
    #4
    i7 900 series, but these days Xeons are probably cheaper to get as more people are looking for i7s.
     
  5. h9826790, May 17, 2014
    Last edited: May 17, 2014

    h9826790 macrumors 604

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #5
    No worries, this is what I am now using in my Mac Pro 2009.

    4x8G Non-ECC UDIMM
    IMG_0018.jpg

    The RAM now running at 1066MHz because I use all 4 slots. Otherwise, it will run at 1333MHz (tested).
    Screen Shot 2014-05-18 at 9.41.10.png

    Personally I prefer the xeon rather than the i7. As Umbongo said, it may be cheaper. Also, I can alway go back to the ECC route if I want to.
     

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