i have a HD 6770 ddr 5 from diamond. its a good low budget card if you can find one under 100$ (newegg has some that are 120-130, which is over priced in my opinion. another 20-30 bucks can get you a 6870)
i play multiplayer battlefield 3 on high settings at 1080p at around 35 FPS and starcraft on high. (havent tried ultra settings)