If <400mm2 GPU drawing <200W being close in performance to 580 can be considered a letdown then be my guest.Sounds like CaymanXT performance sentiment relative to the 580 is shifting on an almost daily basis. ATI/AMD have done a remarkable job keeping everyone in the dark this close to launch, but after the inevitable buildup of expectations (even amongst the conservative crowd here at B3D), they may be setting themselves up for a major letdown.