Regulating cpu temperature question

[Genersis]

"Cooling pads"?
Hmm, guess my laptop has always operated at quite a cool temperature, so i haven't had to look into cooling methods/devices.:redface:

I recommend running your laptop as cool as possible, as it extends a computers lifespan at least a little.

I heard somewhere that computers slowly lose processing power over their lifespans, the hotter they run, the faster the computer loses MHz. Anyone know if that's true?