well its technically not "required" to have more then 128 but its always a big plus+, but yes there are 512 cards nowadays. i still have a 6800 vanilla 128 and it runs 90% of games on high settings. im not going to upgrade until i absolutely have to.
very true but A) i dont plan on getting vista at all, its just eye candy and B) i dont game alot so when i play i play CSS and fear and doom3 the most which my 6800 plays fine. but yes for others they may want to consider upgrading.