Matching CPU's MP 4,1 Yes or No?

Discussion in 'Mac Pro' started by ade90054, Sep 16, 2016.

  1. ade90054 macrumors newbie

    Joined:
    Sep 15, 2016
    #1
    Hi all,

    So I've searched the forums here for this subject and the results I've found seem to vary somewhat.
    I've got a dual cpu MP 4,1 that I want to perform the well documented upgrade on. I've also got a single x5690 cpu, can someone tell me unequivocally that I could by a second non-matched x5690 and it work? Has anyone on here done this and succeeded?

    Any help much appreciated,

    Thanks,

    J.
     
  2. h9826790 macrumors 604

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #2
    Unless you bought an Engineer Sample. AFAIK, all official X5690 has same stepping, so they are all matched.
     
  3. ade90054 thread starter macrumors newbie

    Joined:
    Sep 15, 2016
    #3
    Yeah it's definitely not a sample, it seems the overall consensus is that it should be fine to grab another single cpu as long as it's the same model and like you say not a sample.
     
  4. prvt.donut macrumors 6502a

    prvt.donut

    Joined:
    Jan 1, 2008
  5. flowrider macrumors 601

    flowrider

    Joined:
    Nov 23, 2012
    #5
    It's really not a consensus, it's a fact. I have X5677 CPUs in my 5,1. The first "set" I received had a CPU with a bad memory channel. The seller took it back and replaced it, problem solved.

    Lou
     
  6. AidenShaw macrumors P6

    AidenShaw

    Joined:
    Feb 8, 2003
    Location:
    The Peninsula
    #6
    While I agree with the posts that there is no special matching of CPUs, I would worry about running a dual socket system with CPUs of different steppings.

    "Steppings" are the silicon equivalent of "revisions". Two processors of the same model # but with different steppings are not identical.

    When processes are swapped between processors, a lot of state has to move with them. If the processors are different steppings, unfortunate things could happen.

    So, don't worry about matched pairs - but get the same steppings.

    And, BTW, most dual socket x64 servers are available with a single CPU, and are field upgradeable to dual socket.
     
  7. raymanster macrumors 6502

    raymanster

    Joined:
    Feb 13, 2008
    Location:
    UK
    #7
    I bought my two x5677 cpus from different suppliers and seems to work fine for last 2-3 months.
     
  8. DanSilov macrumors member

    Joined:
    Sep 19, 2016
    #8
    Another confirmation here, bought two X5680's from different vendors, work absolutely fine.
     

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