Mac pro 3.1 Memory....

Discussion in 'Mac Pro' started by Cactusface, Jun 21, 2015.

  1. Cactusface macrumors member

    Mar 24, 2015
    Leicester. UK
    Hi All,
    I just got a second Mac pro 3.1 this has 28Gb of Ram (800MHz) in the form of 6x4Gb and 2x 2Gb modules. is there any proper way to install this? or is memory used from slot 1 riser A onwards. It's not something like slot 1 riser A, then slot 1 riser B, thinking along the lines of dual channel memory as per PC, etc..

    At the moment I have the 2x@2Gb in slots 3 and 4 on riser B!

    Any ideas will it really make any difference??


  2. IowaLynn macrumors 65816


    Feb 22, 2015
    Anything goes, just pair slots so 1&2, 3&4 on each Riser are matched.
    Using all 8 DIMM slots also improves memory performance.

    Some use 667MHz to save money, cheaper, easier to find - and run cooler.

    As long as the fans and air and that they stay say below 70*C should be fine.

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