Temp diff between cores...Why ?

silvercut

silvercut

silvercut

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11 Sep 2008
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What could be the reasons for a 3c (sometimes 4 or 5c) difference between the cores - the only reason I can think of is uneven appliance of the thermal paste...
 
This can be caused by an uneven integrated heatspreader on the cpu as well, apart from an E6600 that had even temps, my 3 intel quads have all had variations across the cores.
 
You could always try re-seating your cooler to see if it makes a difference. If you monitor your temps too, it could provide you with info. ensuring your cooler is setup just right.

If your temps aren't high, then just forget about it ;)
 
Most of my cpu's have had temp variants across the cores.
What cpu are you using and temp readings.
 
There's a good article on techpowerup that explains why this happens.. from what I remember it's something to do with each core having their own digital thermal sensor, and they don't all have the same TJMax values, so because RealTemp sets TJMax to 100c, this is why you see differences across your CPU's cores, you can actually calibrate each individual core so that they show the same temps, but that just seems like to much hassle to me!!

Here is the article I was referring to, it makes for a good read..
 
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It's because the thermometer being used gives an estimate of the temperature increase required to cause throttling, said temperature being largely unknown outside of Intel and guessed at by real temp et al, and critically that this thermometer only needs to be remotely calibrated near throttling temperature. The cpu doesn't give a damn if it's at 40 or 70 degrees so the built in thermometer can be wildly inaccurate whenever below throttling. It's remarkable that the cores agree as much as they do.
 
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LoL, I used that link to the noctua review in another thread, thanks for pointing that out Jon!

It's fixed now.. :)
 
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