CPU temp much lower than individual core temp in Everest

[Barfo]

This is the first time I've monitored my temps so I don't know if these readings I'm getting are normal.
Everest reports cores #1 and 2 to be 36 C, and there's also a reading that says "Temperature: CU" and it's 26, if this is the temp for the whole CPU, including the 2 cores then it doesn't make sense being lower than each single core temp, or is it something different?

I'm running an E8400 on an Asus P5Q Pro if that's relevant.

 

[VirtualLarry]

The core temps are reported using the DTS (digital temp sensor) on each core, and they are near the hottest part of the silicon.

The overall CPU temp, is an analog temp sensor, that depends on a thermal diode that is not near the hottest parts of the CPU.

In other words, the core temps are TJunction, and the CPU temp is Tcase.

There is a delta (temperate gradient) between Tjunction and Tcase, and generally, Tjunction is 10C higher than Tcase.

 

[thilanliyan]

I get the opposite on my 9850BE. The CPU temp is consistently 3-8C higher than the individual core temps.

 

[Tempered81]

put a load on the cpu, like linpack, orthos, or prime. See what the everest temps read then.

 

[Barfo]

Originally posted by: VirtualLarry
The core temps are reported using the DTS (digital temp sensor) on each core, and they are near the hottest part of the silicon.

The overall CPU temp, is an analog temp sensor, that depends on a thermal diode that is not near the hottest parts of the CPU.

In other words, the core temps are TJunction, and the CPU temp is Tcase.

There is a delta (temperate gradient) between Tjunction and Tcase, and generally, Tjunction is 10C higher than Tcase.

Thanks Larry, that makes a lot of sense.

Originally posted by: thilan29
I get the opposite on my 9850BE. The CPU temp is consistently 3-8C higher than the individual core temps.

weird...then again intel and AMD cpus must be quite different from each other.

Originally posted by: jaredpace
put a load on the cpu, like linpack, orthos, or prime. See what the everest temps read then.

will do that overnight