How "Core" temps are found

[klah]

http://www.legitreviews.com/Reviews/coretemp_1.shtml

There are two independent thermal sensing devices in the Pentium 4 processor on 90 nm process. One is the on-die thermal diode and the other is in the temperature sensor used for the Thermal Monitor and for THERMTRIP#....
...
...the ABIT board recorded idle temps at 50°C while the ASUS board was showing 36°C on both MBM5 and ASUS Probe.

 

[Mangler]

very good find. I learned a bunch from that article and it also explains why my temps seem to be a bit higher.