Have you tried a different CPU temp measuring tool?
CPUID HWmonitor works good on every system I have tried it on. http://www.cpuid.com/softwares/hwmonitor.html
You mentioned "extreme setting". Are you doing any overclocking in the BIOS set-up from the processor?
If overclocking causes CPU heating (and if not controlled can damage CPU's)
I haven't tried other measuring software but with BIOS v4816 and older there wasn't any overheating problem.
Now after a short while my case fan speeds up to its maximum. That's why I recognized the problem. I only use Intel's turbo boost technology. I don't tune my settings manually.