SpidersWeb,
I could've answered the OP's question directly, however, he would've learned nothing. I can spoon-feed information and explanations, but that would defeat the purpose of the Guide. The idea is to read the Stickies. Newcomers just might learn something. Every question posted asks that we volunteer our precious time to write answers that have already been written in Stickies, because Forum Members are either unaware of where to find the information, or are simply too lazy to read.
SpidersWeb :
I also just realised that the Tjunction values will be coming through that same monitoring chip if HWMon is reading them, which I wasn't aware of ...
Not quite, nor does the choice of monitoring utility have anything to do with it, although Hardware Monitor typically shows CPU temperature as "
CPUTIN". You might want to give the Guide another read, as it appears that you have a few misconceptions, which are best not passed on to our readers.
From the Guide:
Section 5: Findings
(
A)
Tcase is acquired on the CPU substrate from the CPU case Thermal Diode as an analog level, which is converted to a digital value by the super I/O (Input/Output) chip on the motherboard. The digital value is
BIOS Calibrated and displayed by temperature software. Motherboard
BIOS Calibration affects the accuracy of
Tcase, or CPU temperature.
(
B)
Tjunction is acquired on the Cores from Thermal Diodes as analog levels, which are converted to digital values by the
Digital
Thermal
Sensors (
DTS) on each Core. The digital values are
Factory Calibrated and displayed by temperature software. Intel
Factory Calibration affects the accuracy of
Tjunction, or Core temperatures.
SpidersWeb :
If their Tjunctions are in the low 30's, then Tcase will be slightly lower (not as high as 43C)) ... I'd expect this to be because the power saving features aren't active in the BIOS (or secondarily the possibility of a BIOS error)
Regardless, you've expressed concerns regarding temperature accuracies, with which I agree. Consequently,
Section 9: Calibrations is devoted entirely to achieving accurate CPU temperature
and Core temperatures. It works. You should give it a try.
Also,
Section 1: Introduction
... Since these sensors measure
2 distinct thermal levels, there is a
5c temperature difference between them, which is
Tcase to
Tjunction Gradient...
Section 5: Findings
(
G) Existing test data from several Intel papers -
http://arxiv.org/ftp/arxiv/papers/0709/0709.1861.pdf - as well as numerous independent sources show
Tcase to
Tjunction Gradient has a known
Offset which is
5c, and is
Calibrated at Load using a standardized
Test Setup.
I hope this helps to calrify how CPU temperature and Core temperatures work.
Comp