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Old 29th July, 2008, 09:09 PM
MUff1N's Avatar
Join Date: October 2007
Location: Payson/AZ
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Post Thermal limits of Core Duo / Quad Processor, what sensor is used to measure this???

This was a question that I wanted to know was where are they getting this temp reading from? So I did some research into this.
Where they (Intel) read this temp is the Tcase sensor on the CPU in between the Cores, NOT the Core temps themselves!
So this is a lower temp reading and allows for a bit more headroom when looking at the thermal limits of your processor.
So in setting the thermal limits on the cores in OCCT monitoring settings, (after some calculations on the diff between core and Tcase temps) I can safely set it to 64c instead of 60c.

In Speedfan the Tcase temp is labeled as CPU and the Cores of course are labeled Core 0 & Core 1 on a Core 2 Duo processor like mine. (Screenshot)
As you can see there is a 14 degree diff between Tcase & Core temps reading the highest temp of the cores.

For complete reading on this subject go to this site.

Core 2 Quad and Duo Temperature Guide - by CompuTronix
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Thermal limits of Core Duo / Quad Processor, what sensor is used to measure this???-speedfan-14-degrees-diff-between-core Tcase.jpg
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Last edited by MUff1N; 31st July, 2008 at 03:28 AM.
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