Question Re Mac Pro Ram Configurations

Discussion in 'Mac Pro' started by meagsy, May 1, 2007.

  1. meagsy macrumors newbie

    Apr 20, 2007
    Hi im about to buy Mac Pro and I have a question re Ram upgrade options.

    So the Mac Pro comes with 1g in 2 x 512 sticks.
    Id like to beef it up with a few more Gs or ram.
    Can I use new 1g sticks along side the original 512s?.....
    I ask this because I think I heard somewhere that all the ram sticks need to be the same size.
    Is this true? or can I put 1g or 2g stick in with the original 512s?

    Lookforward to your responses
  2. mustard macrumors 6502a


    Dec 28, 2005
    You can put in any "pair" of ram that you would like but in order to see the maximum benefits you would need to install 4 equal sized sticks of ram.

    You can install 8 equal sized sticks, or 4 equal sized sticks, or 2 sets of 4 equally sized sticks in order to achieve max performance.
  3. CanadaRAM macrumors G5


    Oct 11, 2004
    On the Left Coast - Victoria BC Canada
    Having said all that about 4 equal sized sticks for 256-bit access --- now forget about it and buy yourself some RAM (in pairs of course). It's more important to have more RAM than matched quads of RAM. The advantage of 256 bit access is more theoretical than it is RW performance.
  4. brooker macrumors regular

    Apr 4, 2007
    This thread has a pretty complete explanation of how RAM works in the Mac Pro, and everything you could possibly want to consider as you plan your upgrade.

    All the best.

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