I have the Sapphire Vapor-X on my AMD rig and I love it. I have been running Sapphire GPU's for quite some time and have never had a problem with even one of them yet. As far as I am concerned Sapphire makes the best graphics cards. As far as OCing it I have not tried because I have not found a need to even try it. I run 3x Asus 27" monitors in a Eyefinity on my system and it works very well.