Will you damage your processor if ...

[netto]

If I would set my phenom 955 to run at 760MHz over nights instead of 3200MHz will it damage it?

 

[festerovic]

That's called under clocking, it should be fine. I would lower the voltage down for the power and heat. I do this on an intel q6600, and instead of 2.4ghz I run 800Mhz. Works great for light usage, like file transfers and internet browsing.

 

[netto]

Thanks

 

[lashton]

netto just enable cool a quiet, while you are browsing and light work the CPU automatically underclocks and goes to normal clockspeed when needed.

 

[cheepstuff]

it's perfectly safe. if you do that, also lower the voltage as low as possible so you can reduce heat and power like festerovic said.

 

[SpidersWeb]

as lashton said, with cool'n quiet it will do it by itself when idling anyway.
Use CPU-Z to watch the cpu frequency in real time.