This is could be pretty misleading. It's an oversimplification of both the current and upcoming graphics card lineup. Could you maybe explain how you're getting the wattage 'estimates' for all these cards? How does a GTX460/HD5830 consume 550W? Or are you trying to say that these would be the type of PSU's you would need to run them?...lol. And how does the rumored GTX490 with 2x gf104's perform on par with with the GTX480 in SLI with 2x gf100's? Some questionable information you have here.