Yep, i was happy with 4ghz, (21x193) apparently the easy way, so i thought id go 20x200, took a lot more work, mainly vcore bumps. Got that sorted, but 4.2 was very alluring, i knew my cooling was good, my knowledge is a different matter. (i still class myself as a noob overclocker). just needed a bump on both vcore and qpi, still got to test it thoroughly yet. Im using 1.300v in bios, but the rig runs pretty cool, max of 78c in LinX, gaming gets to 67c on highest core, gpus at 70-69c, i thought about a sandybridge rig, but its not worth it, yes a higher clockspeed, but loose out on pcie bandwidth for multi gpu's. I know the difference is small, but to me it's still a loss.