Well my laptop averages at around 40-45 degrees and my desktop
is around 45.
Just remember not to go over 50-60. Or you can always go to your
bios and set a warning temp in which the computer will shut down
after a certain temperature.
Alternatively you can leave the casing open for better
ventilation. CPU is the chipset in your mobo. It's similar to the
concept of your car interior being really hot, and the engine as
well.