Hi mate
I know wot you meen mate, but i dont think there s a grafic card with simler speed, becose i also use other games and programs wot require s a better card like 8000.
But i dont think its got to do somme thing with the grafic card, but with updates and drivers this all started with the new grafic card wot been also made for windows vista.

so i think there will be updates or drivers wot will fix this in time, i cant believe that they will not do any thing with it becose they want to sell there game s to and there will be only newer cards wot will hold Vista so i think there will be updates.
Maybe the community cane do somme thing