Your CPU will shut itself down (AMD) or throttle itself down
(Intel) if it gets too hot. This won't happen until at least
75c.
Generally, the lower the temp, the better. The amount of electrical
resistance increases proportionally to the amount of heat there is
in a chip, the lower the resistance, the better.
anything below 50 is OK. When ur running at 50+ degrees
(centigrade), thats when i would look for a better cooling
solution.