Different programs giving me different CPU temp

[kb2114]

I'm trying to figure out my CPU temp, but it seems that every program I use tells me a different temp. Here's an example:

http://img465.imageshack.us/img465/4346/temps2gy.jpg

So which one of these should I trust?

 

[cubanx]

AIDA32 usually gets the CPU sensor correct for me. The other program could be reading the AUX Temp as the CPU temp.