Newb memory question.

Discussion in 'Mac Pro' started by alanlindsay, Apr 15, 2008.

  1. alanlindsay macrumors member

    Joined:
    Mar 4, 2008
    #1
    So the MP comes with 2GB (2x1GB). If I buy 8GB ( 4x2GB ) is it best to leave out the 2GB it comes with or include it for a total of 10GB. I ask because I read on the Apple website that the memory is most effectively utilized when operating with 4 or 8 identical modules. Cheers.
     
  2. MacAtaq macrumors newbie

    Joined:
    Jan 17, 2008
    #2
    Theres no harm in leaving your original 2GB.
    If you get 4 x 2GB (here are your 4 identical modules) thats 8GB +2GB Original.
    If you're looking to upgrade your RAM I recommened www.MemoryAmerica.com. - last time I checked their 8GB kits were running at $346.
     
  3. alanlindsay thread starter macrumors member

    Joined:
    Mar 4, 2008
  4. CanadaRAM macrumors G5

    CanadaRAM

    Joined:
    Oct 11, 2004
    Location:
    On the Left Coast - Victoria BC Canada
    #4
    We have Guide on Understanding Intel Mac RAM under the Guides tab, Hardware.

    The answer to the question depends on how you are using the RAM.

    RAM in the 3 and 4 sockets on each riser is slower than RAM in the 1 and 2 sockets (higher latency, because the request goes to the 1 or 2 socket first, and is forwarded by the chip on that FB-DIMM to the 3 r 4 socket)

    So if you gain more application performance by having the extra 2 GB total RAM, than you lose through additional latency, then you would have faster performance.

    In the USA, check out Data Memory Systems - $356 for 8 GB, excellent reputation and service.

    I don't know MemoryAmerica -- their domain has been in existence for 1 year. The WHOIS domain information is stealthed, which I never like.
     

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