How well should this video card run World of warcraft?

This is not a bad set-up... you will get a lil lag here n there. Most of the time the probs w/ WoW is your interent signal strength. It varies much more than you realize. Look at your firewall settings, and task manager to reduce the # of other services running. Also you can be effected by your routers settings. Game probs are not always about buying the latest-greatest video solution. I'm sure someone will stop by and suggest you spend $$$+ on a dual-quad core, and their lastest idea of the perfect video card... after they bash your poor and dismal setup (their view..). If none of the ideas above help, you will see a seat of the pants improvement by doubling your Ram, and Video. Oh! Go find the latest drivers for your card BTW....