Best memory distribution on riser cards

Discussion in 'Mac Pro' started by zopiro, Oct 30, 2012.

  1. zopiro macrumors member

    Joined:
    Oct 1, 2010
    #1
    I have two 4GB and four 512MB dimms. What would be the best way to dispose them on the riser cards?
     
  2. ColdCase macrumors 68030

    Joined:
    Feb 10, 2008
    Location:
    NH
    #2
    It may be helpful indicating which Mac Pro model you have.
     
  3. Umbongo macrumors 601

    Umbongo

    Joined:
    Sep 14, 2006
    Location:
    England
    #3
    The two 4GB on slot 1&2 of riser A and the four 512MB all on riser B.

    I'd replace the 512MB DIMMs with 1GB DIMMs, preferably 2GB, if you can. I see on eBay you can get them quite cheap now.

    This is because optimally you have the same amount of memory on each riser, and you use dual-rank DIMMs and you fill all the memory slots. 512MB DIMMs are single rank (as are some 1GB) and there is a big imbalance on how much you have on each riser.
     
  4. zopiro thread starter macrumors member

    Joined:
    Oct 1, 2010

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