I need help with potential Mac Pro RAM configs

Discussion in 'Mac Pro' started by NEENAHBOY, Jun 15, 2008.

  1. NEENAHBOY macrumors 6502

    Joined:
    Aug 15, 2004
    Location:
    Arlington, VA
    #1
    Let me preface this by saying that I read the "Understanding Intel Mac RAM" guide, but it's either too vague or I'm just stupid (probably the latter), because I still don't fully get it. :eek:

    I plan on using the stock Apple RAM and a 4GB kit (don't think I need the power of the 8 kit just yet), probably from OWC. From what I've read, I think my particular configuration needs to be like this:

    Riser A
    2GB | 2GB | empty | empty

    Riser B
    1GB | 1GB | empty | empty

    With this, A1 and A2 are the same, as are B1 and B2. Is this a correct arrangement?

    Also, I get that full 256-bit access won't be available with this configuration. When the guide says there is a small speed benefit to doing this, just how small are we talking? Would it be worth it to just get four 2GB modules and stick the stock RAM in A3/A4?

    Thanks for your help, all.
     
  2. CanadaRAM macrumors G5

    CanadaRAM

    Joined:
    Oct 11, 2004
    Location:
    On the Left Coast - Victoria BC Canada
  3. hajime macrumors 68030

    Joined:
    Jul 23, 2007
    #3
    I read that 1GBx2 are included with the MacPro. For a total of 10GB, which of the following configurations leads to the best performance?

    Option1. A1=A2=B1=B2= 2GB, A3=B3=1 GB
    Option2. A1=B1=4, A2=B2 = 1 GB
    Option3. Open to suggestions.

    In terms of performance, is it better to buy larger modules and use as few slots as possible? For a total of 12GB, what is the best configuration? Are there any rule of thumb?
     

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