yeah, what exact card is it?
I know I went with a 8600GT 256mb card over many 512mb cards in the same price range as the 8600GT blew 'em away.
I would do a few other things 1st tho'.
1. Drop texture size down to 256 or 128 even. That in and of itself will help you out a ton. (When you 1st launch AH instead of clicking Online click VIDEO to change texture size)
2. Make sure all the garbage is turned off on your system. Many ways to do this. FSAutoStart is an excellent program that will shut down services you don't want running to fly AH, launch AH, and when you exit restart said services.
2a. Personally, i'd go to
www.blackviper.com and use it as a guide on what services to turn off. I would prob. also run HiJackThis and shut down all that hidden garbabe you don't want running. (disclaimer: HiJack this is a powerfull program. when in doubt on what to turn off google is your friend)
A clean system is a happy system. I ran a 1.3Ghz system w/ 512mb ram untill recently in AH and had fps in the 30's. I think I had at the most a dozen processes running on it.
(edit: what is this Rangoon thingy in the lower right and how exactly did it get there?)