I dunno about pushing it though I ran an i5 750 at 4.1Ghz OK gaming, similar core voltage on the ASUS Maximus 3 Formula, easy done it with only few problems maby from tweeking memory and old Crysis 1 code, maby 205 BCLK, and I've read OC3D Forum admin I think Brooksie or TTL got a 760 to 4.4Ghz. I think the common accepted limit is 4.2 for 750 and 4.3-4 for 760. Nice stuff