Am I to assume that..

Discussion in 'Mac Pro' started by MacNoobie, Jun 3, 2008.

  1. MacNoobie macrumors 6502a

    MacNoobie

    Joined:
    Mar 15, 2005
    Location:
    Colorado
    #1
    You cant mix 2GB sticks with 1GB sticks in a MacPro?

    I got an 800Mhz mac pro and the stock 2GB (1GBx2) but it isn't recognized by the system (after installing the new 2GB modules). The 4x2GB (8GB total) is recognized that I'd bought from newegg. Originally when I had the 1GB modules in slot 1 then the rest in slots 2,3 on both boards it recognized 6GB available.

    The 2GB are all FB dimms they work just not the 1GB's that came with it. I now have all 8GB spread across slots 1,2 on both board and the 1GB modules occupy slots 3 on both ram cards.
     
  2. rpaloalto macrumors 6502a

    rpaloalto

    Joined:
    Sep 19, 2005
    Location:
    Palo Alto CA.
    #2
    Try
    1 gig slot 1 top riser
    1 gig slot 1 bottom riser
    2 gig slot 2 top riser
    2 gig slot 2 bottom riser
    2 gig slot 3 top riser
    2 gig slot 3 bottom riser
     
  3. MacNoobie thread starter macrumors 6502a

    MacNoobie

    Joined:
    Mar 15, 2005
    Location:
    Colorado
    #3
    Haha thanks I found the ram chart someone made up that details the different options and figured out that Riser A needs to be completely filled with ram and Riser B only half.

    Thanks!
     

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