Yet another 2008, mac pro ram question?

Discussion in 'Mac Pro' started by rpaloalto, Jan 26, 2009.

  1. rpaloalto macrumors 6502a

    rpaloalto

    Joined:
    Sep 19, 2005
    Location:
    Palo Alto CA.
    #1
    I now only have 6 x 1GB of ram left in my 2008 mac pro. I know this is not a optimal configuration.

    Should I Buy 2 more 1GB sticks. To bring my mac pro back up to 8GB?
    Or should I buy 4 x 2GB, and scrap 2 of the 1GB for a total of 12Gb?

    I know for best performance, you want to have matching sets of 4. Does this mean you have to have all 8 matching? Or will 4 x 2GB and 4 x 1GB work just as good as all 8 matching?

    last but not least,
    If I do toss 2 of the 1GB sticks, and get 4 x 2GB. How would I install them.

    Riser A
    2GB
    2GB
    2GB
    2GB

    Riser B
    1GB
    1GB
    1GB
    1GB

    OR
    Riser A
    Slot 1: 2GB
    Slot 2: 2GB
    Slot 3: 1GB
    Slot 4: 1GB

    Riser B
    Slot 1: 2GB
    Slot 2: 2GB
    Slot 3: 1GB
    Slot 4: 1GB

    Thanks
     
  2. sidewinder macrumors 68020

    sidewinder

    Joined:
    Dec 10, 2008
    Location:
    Northern California
    #2
    rpaloalto,

    It seems a waste to buy more 1GB DIMMs. This will work best and give you maximum performance:

    Riser A
    Slot 1: 2GB
    Slot 2: 2GB
    Slot 3: 1GB
    Slot 4: 1GB

    Riser B
    Slot 1: 2GB
    Slot 2: 2GB
    Slot 3: 1GB
    Slot 4: 1GB

    If you go that route, how much do you want for your 2 extra 1GB DIMMs? I work in the Santa Clara area so I believe I am local.

    S-
     

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