CPU temperature, which program shows the correct one

[unknownuser]

Hello, my problem is simple: my cpu's temeperature has a 10 degree difference from program to program.

In bios it reads ~29 degrees, in windows in Aida64 33 degrees, Asus Ai Suite 33 degrees, CoreTemp 43 degrees, RealTemp 43 degrees. Which shows the correct temperature ?
Specs: Q6600 (2.4ghz, will overclock after i know which temp is correct), Corsair Dominator CM2X2048-8500CD (1066), Asus P5KR, Thermaltake TR2 550W, Antec Kuhler H20 620.

 

[silverliquicity]

The cpu temp should be lower when looking at it in the bios as theres not a lot the cpu has to process.

I use "realtemp" for seeing my cpu temp, but you can just work out the avarage of what all the programs say, or go with the program which says the highest (better be safe than sorry)