Dual quad Temps

Discussion in 'Mac Pro' started by highdefw, Feb 6, 2012.

  1. highdefw macrumors 6502

    Apr 19, 2009
    Is it normal to see one of the quad processors rise higher in temperature than the other?

    Under stress, one processor is about 50 deg C (heatsink = 44C) while the other is about 43 deg C (heatsink = 37).

    I'm running a Mac Pro 4,1.
  2. Flocarino macrumors member


    Jun 4, 2010
    Montreal, Canada
    similar thing here:
    1 CPU, Heatsink 40C, processor average 48C, the other CPU Heatsink 30C, processor average 37C.

    MP 4.1 Dual 2.26Ghz.

    I even removed the heatsinks cleaned the thermal paste and applied a new layer of Arctic MX-4 compound, same results, so I guess it's normal;)
  3. alphaod macrumors Core


    Feb 9, 2008
    Yes, it's normal for one temperature to be higher than the other. If you take off the side panel you'll notice one of the heatsinks is behind the other. So the first one draws in cooler air from the front intake and then it's expelled to the rear heatsink which draws in some cool air, but mostly the already heated up air from the heatsink in front of it. Therefore the rear heatsink is much warmer, and you'll see that the temperatures are higher.

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