Temperature readout differences

[996GT2]

After getting CoreTemp, I noticed a big difference in the temperature readouts that it gave in comparison to those from SpeedFan. When idling, CoreTemp shows 22-24 degrees celsius while SpeedFan shows around 35. Why is there such a big difference? Are the temps from CoreTemp more accurate?

CPU configuration:
Athlon 64 3500+ Orleans, 2.8GHz at 1.344V

Screenshot
http://i78.photobucket.com/albums/j120/996gt2/CPUTemp.jpg

 

[996GT2]

bump

 

[firebyyrd]

wow, that's interesting.

Mine usually shows 5-6C degrees higher on CoreT over the motherboard temp. readout.

Sorry I can't help much, but I just want to let you know how mine works out :]

just a note, maybe you heard it before..

.. CoreTemp readings can vary 5-10C degrees.

 

[timzak]

My Coretemp #s are 15C higher than SpeedFan, so you're not alone. Speedfan seems to match the bios readings pretty closely when it comes to idle temps (can't really use the bios readings for load temps), so I'm inclined to trust Speedfan more right now. Currently while typing this, Speedfan shows core0: 36, core1: 33. Coretemp shows core 0: 51, core1: 48. At load, Speedfan shows both cores @ 50, Coretemp shows 65c for both cores.

 

[996GT2]

Well, CoreTemp shows HIGHER CPU temperatures than SpeedFan for you guys, but it shows much LOWER temps (10C lower when idling-23 vs 32-33) than SpeedFan for my CPU. I don't fully understand this; isn't the CPU core sensor supposed to give a higher reading because it is closer to the actual core?