Hi i just started multiboxing 4 Hunters<3

I wanted to see how my Graphic Card and CPU was doing.
So the startup heat was:
Graphic card 70-75 unloaded
CPU 40-45 unloaded

Added a extra screen to make questing easyer and started playing.
After a houer or so i check the temprature again.
Graphic card 50-55 O.o wtf?
CPU 39-43

Using a Geforce 8800 GTX anny know how i got thease readings?