Running an XFX 790i. Really happy with the board, got a Q6600 GO in in with 2Gigs of Corsair Cheap DDR3 RAM. It's a bit different in overclocking to my Gigabyte P35-DS3R, but I picked it up quickly enough. I've got a higher overclock on this compared to the Gigabyte as it seems to takes less volts to get the overclock. Lost my Tuniq Tower on the other board as I can't get the backplate off, so using an AC7. So, it's at 3.5 and prime stable (8 Hours plus) at 1.46250. I would easily hit 3.6 or higher with a Tuniq. Haven't really fiddled too much with the other stuff yet and a nw bios is due to be released any day now, so, see what options that opens up.