Model A1224 / Mid 2007 and Early 2008 / 2, 2.4, or 2.66 GHz Core 2 Duo processor

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What are the typical iMac temperatures?

I just upgraded my Mid 2007 iMac to an SSD / HD combo in exchange to the previous HD / DVD drive.

Everything works but before an hour my iMac just turned off like someone would have plugged out the power cable. It was running about an hour before that.

I wonder if there is a problem with the temperatures or with the temperature sensors.

What are the normal temperatures for an iMac?

I currently get these values in iStatPro:

  • AC/DC Supply 80° C
  • Airport Card 62° C
  • Ambient Air 27° C
  • CPU Heatsink 51° C
  • GPU Die 68° C
  • GPU Proximity 64° C
  • Hard Drive Body 49° C
  • LCD Proximity 49° C
  • Misc 53° C
  • Optical Drive 46° C
  • WDC WD20EZRX-00DC0B0 (my new HDD) 49° C

Speeds from iStatPro:

  • CPU Fan: 1199 rpm
  • Hard Drive 1213rpm
  • Optical Drive 1000rpm
Answered! View the answer I have this problem too

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Btw: I am not having the problem that the fan is always on as described in many other posts. That only seems to happen with the newer iMacs; mine is the first ever built aluminium iMac model.


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It would be helpful to know the ambient room temperature.

Running AHT 2 or 3x in a row should detect and report an overheating problem... it might also detect/report what is shutting down your machine.

FWIW except for the GPU area your temps/fans seem to be normal... ( advanced DIY: maybe renewing the thermal paste would help that.

IMHO there's a diminishing point of return where intentionally over-clocking fans at high speeds (over 2k rpm ) only increases the risk of burning out bearings and creating irritating noise.

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Aaron will be eternally grateful.
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