What’s your PCH Die Temperature?

Discussion in 'iMac' started by Fried Chicken, Mar 29, 2016.

  1. Fried Chicken macrumors 6502

    Fried Chicken

    Joined:
    Jun 11, 2011
    #1
    My PCH die seems to be sitting at 44°C no matter what, and it’s causing my iMac’s fan to constantly run at >2k RPM.

    What configuration of iMac are you running, and what’s your Platform Controller Hub Die Temperature?
     
  2. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #2
    37c with the fans running at 1200 speeds - I have a 2015 5k iMac.
    --- Post Merged, Mar 29, 2016 ---
    Are you sure its the PCH Die temps, because 44 degrees is not warm (for a computer), and there must be another reason why your fans are running over 2k.
     
  3. dimzen macrumors member

    dimzen

    Joined:
    Nov 11, 2011
    Location:
    Denmark
    #3
    Atm my PCH die is at 55c, fan at 1200rpm, on my iMac 27" late 2013
    Do as maflynn saids, must be something else :)
     
  4. Fried Chicken thread starter macrumors 6502

    Fried Chicken

    Joined:
    Jun 11, 2011
    #4
    It’s a mystery.

    I might have to do an SMC reset, Macs Fan Control in Boot Camp might be causing interference with the Mac side of things.
     

    Attached Files:

  5. dimzen macrumors member

    dimzen

    Joined:
    Nov 11, 2011
    Location:
    Denmark
    #5
    At the top, you "active set" is set to Default, mine is on Off, could you try that? :)
     
  6. Fried Chicken, Mar 29, 2016
    Last edited: Mar 29, 2016

    Fried Chicken thread starter macrumors 6502

    Fried Chicken

    Joined:
    Jun 11, 2011
    #6
    Tried it, did an SMC reset, still running high at >2k.

    It’s possibly related to the new HDD and SSD I installed, however both are reporting accurate (low) temperatures.

    [edit]

    Interestingly over the past 7 days the fan was at idle for one short period:
    Screen Shot 2016-03-29 at 9.17.35 PM.png

    I looked across all temperatures during the period that the fan was at idle, and none of them were any higher or lower. Something weird is going on.
     

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