Mac Pro Ram question

Discussion in 'Mac Pro' started by Mac Kiwi, Jul 7, 2015.

  1. Mac Kiwi macrumors 6502a

    Joined:
    Apr 29, 2003
    Location:
    New Zealand
    #1
    Hi.

    So I have an MP 3/1 and I have 24gb of ram. My knowledgable PC friend tells me that 24 is a mess. Is this true?

    Riser A 4,4,2,2 Riser B. 4,4,2,2. ( Of course if it was cheaper I would have all 4gb chips )

    I always thought that as long as they were matched pairs that different sizes were ok?

    Tia
     
  2. ActionableMango macrumors 604

    ActionableMango

    Joined:
    Sep 21, 2010
    #2
    In my opinion it's fine and not worth the money to change. Any real life speed improvement from matched RAM will be minuscule.
     
  3. Mac Kiwi thread starter macrumors 6502a

    Joined:
    Apr 29, 2003
    Location:
    New Zealand
  4. IowaLynn macrumors 6502a

    IowaLynn

    Joined:
    Feb 22, 2015
    #5
    The 2006-7 were "mess" mixing and using 6 DIMMs, and higher latency with more than two on each Riser... but Barefeats tested the 2008 and found you are simply best to fill all DIMMs, and it did not matter if they were (1's 2's 4's) as long as the pair was properly installed. A few hardy souls have even managed to snag some 16GB FBDIMMs and have them working in 3,1 as well.
     

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