@Unclewebb:
Excellent documentaion of your work/research.

It would be interesting to do the same exercise provided I got me an IR-meter.

So far I have concluded that my E8400 must be totally wrong regarding DTS/TjMax settings.
There is no way Core0 can be 11 degrees @ 1.33VCore (idle) as reported by Realtemp assuming TjMAx=95.
The DTS for Core1 we can conclude is "stuck"/malfunctioning (see previous posts).

I think you will have to test quite a few E8n00, Q6n50, E4n00, E21n0 before concluding anything regarding a "pattern" between observed temp using IR-meter related to a certain TjMax offset.
Ideally there should be a pattern as there should not be significant deviation between CPU's on a wafer/different wafers using the same production technology.
But clearly we regulary see "batches" of "hot" vs "cold" versions of a given CPU (ie Q6600 B3 vs Q6600 G0).