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GTX280 & two temps

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good question
 
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I'm not certain, but I thought one was the GPU and the other is for shaders.
 
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In the case of the 8800, I think the lower is correct. I believe the higher one is not on the GPU itself, and uses a LUT to correct for the distance, but reports the wrong temps.
 

W1zzard

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one temperature is read from the on-die sensor and the other one is read from the fan controller ic which also reads the core temperature via diode. whether this is actually the same diode is unknown
 
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