I have contacted Intel, and they replied with:
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Hello,
I understand that you are concerned about the processor reaching 100 degrees Celsius when running stress tests.
The processor should not reach above 74 degrees Celsius in full load, please make sure that you are reading the CPU temperature and not the cores temperature.
It is normal to see the cores of the processor reaching higher temperatures than the CPU itself.
Also there is a reported overheating issue with some of these processors
located here:
https://communities.intel.com/thread/54032?start=15<(>&<)>tstart=0
This overheating issue should be fixed by installing the latest BIOS version for your motherboard, however if the issue continues, then the processor should be replaced.
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So guys how can I read the CPU temp not Core temp? (Any softwares other than HWMonitor?)
Also, what is the exact distance between Core temp and CPU temp (TCASE) of that CPU? Or at least the maximum estimated average?