I'm completely new to overclocking so i thought i might ask here for some advice on it. I want to push my athlon 2 x4 640 to its limit but i can't seem to find anything on amd's site for this cpu. I know theres a menu in my bios for this but i don't know what to set for it. I'm on a asus m5a78l-m lx v2, 4g ram and a gtx 550ti(i can't remember the exact id for it, i know its a gigabyte though).