I recently started using HWiNFO64 v4.34 (Link) to review system info. It's a great utility btw. Decided to check out the developer's (Martin Malík) forums and came across his description of how on-die temps are measured.
Have a look see (Here)
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"accuracy gets worser"
I'm sorry, the grammar Nazi in me took a look at that and started to chuckle...
lool...
But to be fair, I don't think the dev's first language was English.
Are you talking about my ex wife again? >:)
http://www.purecostumes.com/mm5/grap...612_full_1.jpg