2010 Mac Pro W3690 CPU Temps

Discussion in 'Mac Pro' started by tomscott1988, Jun 19, 2017.

  1. tomscott1988 macrumors regular

    tomscott1988

    Joined:
    Apr 14, 2009
    Location:
    UK
    #1
    Hey guys,

    As above I have a 2010 Mac Pro with an upgraded W3690 3.46 hex.

    What temps are you reading? At the moment we are having a heat wave in the UK and it hit 34 deg C today. The Mac Pro at idle is running in the 52 deg C range and with photosnalysisd running in the background its hitting 63-64. Otherwise it is copying 3TBs of data.

    I had a quick look at the spec for the W3690 and it states 67.9deg C is the maximum temperature allowed at the processor Integrated Heat Spreader (IHS).

    iStat when showing 48 deg at CPU A Tiode the CPU A (relative to prochot) shows 51 and CPU A heatsink is showing 45 deg.

    CPU Tiode seems to be the overall temp it shows.

    Is this normal or should it run cooler.

    I bought the Mac Pro pre upgraded from a Mac reseller just wonder if the Thermal paste needs reapplying.

    The computer doesn't seem to ramp up the fans, so when it is hot like today I set iStat to run the fans at High. This has brought it down to 46-48

    Cheers

    Tom
     
  2. h9826790 macrumors 604

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #2
    Then native fan profile is tuned to keep the CPU at or below 85C. The fan usually won't spin up until the CPU Tdiode temperature reach 80C.

    Anyway, as you said, that 67 is T-case max, not Tdiode max. And there is no practical way to know the T-case of the W3690 in a cMP. I use my W3690 for 2+ years, from my observation, up to 85C is fine, but really very close to thermal throttling. If you keep it under 80C, then the CPU can run at full speed 24/7. And won't affect by temporary / minor temperature fluctuation.
     
  3. tomscott1988 thread starter macrumors regular

    tomscott1988

    Joined:
    Apr 14, 2009
    Location:
    UK
    #3
    Fantastic thanks for the information!

    I did think 67 was a little low!
     

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