I wouldn't OC it higher than 4.4/4.5ghz, and I'd use a liquid cooling system. Otherwise you need to crank up voltage too much and temps can get high. Beyond that OC, the benefits are really marginal, and you don't want to burn that i7 too fast.
I'm currently running my i7-3930K at 4.7ghz , temps at idle are in the 40's c and under full stress high 70's c (prime95). The CPU is water cooled and the temps are very manageable when gaming.
What are you using the PC for? Is it slower than you would like? If its for gaming what GPU do you have?
Well it is for A LOT of CAD and probably a good chunk of gaming. And I have a GTX 680 2gb Superclocked Signature 2 for my video card. Well is isn't 3.2 GHz kinda slow for a CPU? Or since it is a i7-3930k it doesn't really matter?
I'm currently running my i7-3930K at 4.7ghz , temps at idle are in the 40's c and under full stress high 70's c (prime95). The CPU is water cooled and the temps are very manageable when gaming.
Well I don't know if I will go that high most likely just 4 GHz. I don't want to shorten the lifespan by that much, or does that depend on specific variables?
Overclocking a CPU does not damage it until you go too high with the voltage or you consistently run it at high temps. A 3930K can be overclocked to 4.0ghz or 4.2ghz without adding much voltage. What you don't want to do is go past 1.38v in an overclock, that's the line that you don't want to cross if you don't want to damage the CPU.
With some of the better after market CPU coolers you can keep the CPU very cool while overclocking, I went to 4.7ghz because I have water cooling and my temps are under control.
What motherboard do you have?