?Maybe More good news for hex 3.2 cpu upgraders?

Discussion in 'Mac Pro' started by philipma1957, Jun 2, 2011.

  1. philipma1957 macrumors 603


    Apr 13, 2010
    Now right off the top this is a maybe. Not sure yet.

    Superbiiz has 16gb sticks of ram for 378 each. really good price really good.


    Now my 2010 quad 2.8 to a hex 3.2 has had flawless performance. Well I have 32gb ram in the form of four 8gb sticks. I can't possibly ever use this much ram,but power users can. Many people have said the only drawback of a single 6-core cpu is the ram limit. intel states my machine can only use 24gb ram well it registers 32gb ram and rembr tested the 32gb ram as good.

    The 16gb sticks are 1066 my cpu only goes to 1066.

    The 1066 sticks are 200 less then the 1333 sticks.


    So any power user that finds 32gb ram as too small.

    Can now buy 4 of these sticks your cost is under 1600 about 1512.

    Cost of 8 8gb sticks is about 1040.


    So building a hex 3.2 costs 2200 for a base quad 2.8 and 600 for the cpu.

    so for 2800 plus 1512 total of 4312

    you get a hex 3.2 with 64gb ram.

    quite a bit less then the dual hex 2.93.

    the dual hex 2.93 is 6200 new and 8 8gb sticks are at least 1040


    so the machine would be 7200. vs 4312

    same ram 64gb. a single hex 3.2 cpu vs 2 hex 2.93 cpus. for some users this is a very good money move.

    sooo if someone has 1512 to spare and a hex 3.2 cpu lets us know if this will work.
  2. Transporteur macrumors 68030

    Nov 30, 2008
    Some formatting would be nice Phil. Try not to hit the enter key that often. :D

    Anyways, OWC states a maximum of 48GB (3x16GB) for the SP Mac Pro, mainly because more memory would result in a hefty performance decrease due to the fact that the clock speed can not be maintained. IIRC, the memory controller will down clock to 800MHz. The same applies to the 96GB OWC states to be the maximum for the DP systems.
  3. AZREOSpecialist macrumors 68000


    Mar 15, 2009
    I have never heard of this. So you are saying that if we go beyond Apple's memory expansion guidelines (32 GB for SP, 64 GB for DP) then there will be a performance penalty?
  4. Transporteur macrumors 68030

    Nov 30, 2008
    No, I'm saying that everything beyond 48GB, respectively 96GB will result in performance hits. This is what OWC states on their website.

    Whether this decreased memory performance will affect the user depends on his specific tasks. For the majority of use cases, more memory is better than faster as most applications can't utilise the speed of 1066MHz or 1333MHz memory anyway.
  5. philipma1957 thread starter macrumors 603


    Apr 13, 2010
    Well even if you buy 3 sticks to go to 48gb, 378 a stick is a really good price. The 2010 quad 2.8 machine has turned out to be a very nice piece of gear to mod.

    2200 usd = a refurb
    600 usd = a hex 3.2GHz cpu
    1134 usd = 48gb ram
    3934 usd total

    Yeah maybe toss in an ssd and a better graphics card. Still this is a good machine for some users. If you sell off the cpu it is more like 3750 usd.
  6. 100Years macrumors regular

    Mar 8, 2011
    Agreed on the 2010 SP hex --- I think they are the best performance value of the bunch.

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