Q8200 shows 24C in bios, around 50C across the board in Vista64

[Krakn3Dfx]

Installed a Q8200 in a friend's PC over the weekend. In the bios, it's showing 24-25C all day long, but in Vista64 using the latest version of RealTemp or CoreTemp, it shows anywhere between 45-58C across each core. I've reseated his Zalman cooler a couple of times, no change, no OC'ing, it's just stock speed, running the latest bios update for this board. Should I believe anything under Vista, or, as I've always been told, is the bios temp the one to believe?

He had an e4400 until this weekend, and that always ran around 32C in the bios and 35C in Windows.

Seems to be running fine otherwise, I was going to overclock the chip a little for him, but with those kinds of temps showing up in Windows, I'm holding off until I can figure out if it's BS or not.

 

[graysky]

Coretemp/realtemp are correct, the BIOS is not.

 

[F1shF4t]

Coretemp and Real temp read core temps, while the bios will read the tcase temp. Also at idle the temp sensors are very innacurate and can be even "stuck" for the 45nm chips.

Always test by load temps not idle temps. It doesn't really matter how it idles as long as load temps are within reason. So run some linpack (IBT, Linx or OCCT which ever implementation you want) and see how it goes.

EDIT: The temps constraints I go by is 20C from TJMax under linpack for quads. When I hit that delta I either stop overclocking or improove the cooling. In reality nothing will ever stress the chip like linpack and actual load temps will be 25 - 35C from TJmax.