I would stay away from GeForce cards when using Maya. While many people on this site have had no problems, in my experience at studios, Radeon's were much more reliable, as they have better OpenGL support. If you can afford it, go for one of the professional cards, like the FirePro's or Quadro's. Always check the qual charts if you want a nuisance-free setup. Others here will tell you that their cards work, but the truth is, it's not just the card, but also the driver version, and other little nit-picking details that cause annoying caveats. Low-end FirePro's and Quadro's are quite inexpensive now. (~$150)