Could someone explain why M/B and CPU temp are different when bootup?

[ninja]

This bothers me since I setup the motherboard (KT7-Raid).
When computer is off, it is an equilibrium state, this means number should close to the room temperature right?
M/B temperature shows a reasonable number, but CPU's is too high, 12 degrees apart.

 

[Xp]

Sure it is, because the CPU runs hotter than the mobo. At bootup, the CPU must load device drivers, startup programs, Windows & more.

 

[mstudd]

The CPU temp. will always be higher than the MB, even straight after bootup, the CPU generates heaps of heat.