It's too early to say what will be the "best", but for now I can tell you that four of the top five world record CPUZ validations were all on the Asus M4A79 Deluxe. I don't believe it has been released yet, so if you're looking for an immediate upgrade it won't do much for you. The DFI 790FXB-M2RS holds the number five spot. I'm not sure if that one is a new revision of the 790FX-M2RS or just a weird way that board identifies. People have had promising results on pretty much any board that worked well with Phenom though, so that means stuff like the ASUS M3A79-T (available now) and Foxconn A79A-S. In the end though, overclocking is a game of luck. With such a good cooler though, I'd be surprised if you can't hit your 3.8 goal.