Windows 7 beta or Windows Vista with Service Pack 1 -- the folks at PC Perspective put both operating systems through the ringer with help from seven graphics cards running the gamut of price ranges. Overall, three ATI Radeon HD and four NVIDIA GeForce cards were pitted with six games and applications in one of the lengthiest benchmarking features we've ever read. AMD / ATI gets credit for being the first to release combined drivers that work on both OSs, and with one lone exception, performance on the Windows 7 machine was equal to or better than Vista. That said, the recomendations for each system is the same: ATI gets an advantage here for cards in the $120 to $130 range, but the competition is much closer as you start looking at more expensive models. Hit up the read link for technical details that you can shake an anti-aliased stick at.