I just put together a system using Z77A-G45 Thunderbolt and a i7 3770K. I saw the OC Genie section in the bios, and clicked it. OC'd the CPU to 4.2Ghz. My question is, how conservative is their OC? 4.2Ghz is good enough if its rock stable, and I'm sure trying to squeeze that extra 300Mhz or so (using Noctua NH-U12P SE2 cooler) might not be worth the hassle. But if its conservative and the current settings is just a fail safe OC, I might play around a bit.