Thanks for the infos guys!
I know the game lags quite a bit online, but I'll try it anyway.
About overclocking the 2500K, I've been thinking about somenthing around 4.2GHz. Is it enough (and safe) to get a good performance boost?
I don't know much about overclocking, but I don't wanna make huge changes on the voltage(and end up reducing the lifespam of my CPU). That's why I'm wanna try to keep it at a low OC.