temperture differences?

Well, with BIOS, there's virtually no CPU load for starters, and especially when you first turn it on. As time passes, the CPU will heat up a little more, but most people don't sit around and stare at the BIOS-reported temps. You're looking at a few degrees difference when your in Windows due to the fact that there's a miniscule amount of processing going on at all times, and due to that the processor does warm up after it's been on for awhile.

If you're noticing a huge variation in temps, you might want to make sure that the program is reading the right temperature.
 
Thats it!Its just the bios tempertures are reading slightly above those read by speedfan! Strange or what!
 
Sorry you told me before that all current CPUs have a temperture sensor built in. Where exactly is the sensor>in the processor chip itself? or is it under the chip? Is data from this same sensor just calibrated and used to calculate the system temperture/temperture of other ICs in the system or are there other sensors?
 
If the CPU has a temp sensor, I believe it's integrated into the die itself, and isn't (or at least shouldn't be) calibrated since it's at ground zero. There's usually at least one other sensor to detect system temps, but again, this could be based on a single temp sensor---although this seems like it could be a lot less accurate way of temp reading for the case and CPU.
 
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