4 Replies Latest reply: Oct 5, 2009 2:46 PM by Dave Barnes
Christopher Damiani Level 2 Level 2 (265 points)
I have a question re: the gpu diode temp in my early 2008 imac. I have the 24" with the 8800 gs. I didn't really pay attention to my temps before, but the past few days the imac had a few instances where it "hung" with the spinning beach ball.

I ran all the normal diagnostic programs and there is nothing out of the ordinary. The one thing I have noticed is that the GPU diode temp is roughly 10 degrees hotter than the GPU and GPU heatsink temps.

My questions are:

What is the difference between the diode and the GPU? (I know what the heatsink is).

Is it normal for a discrepancy this big? I have searched the apple forums and macrumors for a while and haven't found one where it is more than 5 or 6 degrees.

Currently the GPU is 49 deg C, and the Diode is 60 deg C under light load (safari).


iMac Core2Duo 24" 8800GS, iMac G5 17 1.8 Ghz Rev A 768 MB RAM 80 GB HD, Mac OS X (10.6.1)