BIOs voltage issue has not been resolved since F8 bios, we're on F12 now. I still have the board and the chip running at 4.5. Much of the issues stem across the Gigabyte boards I believe including UD3/UD7 with LLC being worthless, vDroop, IMC/VTT glitch. The audio thing might only be me and maybe my particular board might just be a particularly crappy OCer. I've given up nonetheless. 4.5 is good enough, probably drop a 3930K in there instead.