I am overclocking my gaming rig's CPU ( i5 3570k with an ASUS P8Z77-V LK and an EVGA GeForce 660 FTW Signiture 2 Edition.) I have a Corsair H80 water cooler and several case fans so I'm all good with cooling and I know how to get into the BIOS but I seriously have no idea what to change and what to change it to. I know that ASUS has a developers tool made for overclocking but many of my friends have had difficulties and I would like a bit more customization with my overclocking. I want my 3.4 GHz processor to go at 4.2-4.5 GHz speed. However I don't want the CPU to run hotter than 60 C. What I'm looking for is stuff like the voltage and basically a few professional opinions on how much is too much.