bios upgrades increase cpu temp?

[acciaio]

I have an Abit KT7 motherboard and i have a 1ghz athlon. when i first got the board in december of 2000 my chip temp at IDLE rested about 30c, a few months later i upgraded my bios and i noticed that now my chip temp rests at 38 at IDLE. Today i received my new heatsink, which was bought just to cut down on the noise, and my temperature went down to 35c at idle. better anyway. So i looked at the abit site and found there was a new BIOS release ... 3R i think is the version. anyway, now my chip rests idle at 43c. what is going on here? I don't understand why upgrading the bios would increase my chip temperature. Especially when we just got these new machines at work with the same heatsink i currently have, and they site idle at 32c. any one have any ideas?

-Mike

 

[acciaio]

ok, i finally got the abit website to load and they know about this. i feel better now... for others interested here's the link

http://www.abit-usa.com/eng/faq/kt7a.htm

 

[Moonbender]

Some BIOS updates raise the reported temperature to make up for the incorrect values reported by the sensor. The actual CPU core temperature is about 20°C higher than reported. Maybe the initial BIOS didn't apply any adjustment, while the next two each adjusted the reported value a bit higher.
The real temperature should not be changed significantly by a BIOS update, I think.

Edit: *cough* I stand corrected. According to the FAQ, the BIOS update changes settings for the CPU idle state, which raises the temperatures.