tjunction is a component in the method how Intel CPUs report temps.
The CPU doesn't actually report a temperature, it reports the difference between temperature and tjunction (DTS_reading). So correct tjunction is a necessity for a correct temp reading:
Temperature of the chip in °C = tjunction - DTS_reading
At default, CoreTemp assumes 85 is correct for all Conroes, this is because some Conroes actually have 85 tjunction. Not all. Some have 70 (rare), but most have 100. The problem is, software cannot read the actual value of tjunction from Conroe chips.
For example, I had a cache-crippled Conroe E6400 (not Allendale, like most E6400s are) that had tjunction of 70, and two very early E6600 chips that had 85. But almost all retail E6600s have 100.
Anyways, user has to deduct the tjunction value based on temps the software reports. Basically, one has to find what tjunction would make sense. 70 and 85 don't make sense for your chip cause tjunction of 70 would mean CoreTemp gives 15°C too high temperatures, and it can't be 85 either cause the chip can't be cooler than it's surroundings without using chilled cooling - 100 is the only option left.
I'd say D-Cyph3r's 4GHz E6600 (in post #8) too has tjunction 100 and as such his CoreTemp reading is 15°C too low.
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