Quote Originally Posted by Chrysalis View Post
They stated this.

Tcase to Tjunction Delta is ~ 10c on B3 / G0 / M0 Stepping and ~ 15c on B2 / L2 Stepping.
That goes completely against what Intel testing has shown. There are times, depending on what software you are running and definitely at idle that the delta between TCase and the core temp approaches zero.

rge has been following this subject very closely and provides plenty of documentation. His post on the previous page of this thread is a good example.
http://www.xtremesystems.org/forums/...&postcount=384

If you are only concerned about load temps then leave the Idle correction at 0. Your B2 E6420 has a TjMax=85C so your load temps should be reported very accurately.

At very low idle temperatures, my B2 E6400 and many other B2, L2 and M0 processors will report temperatures slightly below ambient which is impossible for an air cooled processor. If a user notices this and is concerned about this then they can set either a (+) or (++) correction in RealTemp to boost their reported idle temperatures.

Anyone that wants to check for this can simply run their processor at 266x6 ~ 1600 MHz and drop your core voltage down to 1.10 volts. Turn up your CPU fan to max, open your case and try to get your CPU as cool as possible. A typical reading in this test is about 4C above your ambient temperature. If software is reporting temperatures below ambient during this test then it is wrong. It may become correct at full load but your idle temps are wrong and if you want a more accurate idle temp then use the RealTemp correction feature.

I don't think that is too hard to follow. Let me know anything that needs to be clearer.