Well I am about to start playing WoW again and I am considering investing in a new graphics card, at the moment I have an ATi X300 (pci-e version) I did buy an nVidia 6600GT a while back but my computer tends to restart by itself when in games when I use it. I was considering an ATi card as I have never had problems with them in the past and apperntly they dont consume as much power as the nVidia cards.

Does anyone have any recommendations on budget cards which will let me play World of Warcraft in 1280x1024 with a good FPS as apposed to 800x600 / 1024x768 at 40fps