Carerra uses openGL, like Max and Maya. So any good OpenGL card (geForce Quadro, Oxygen, etc) will help you model. But I don't think it stresses openGL as much as Max does, so you might be fine with a regular geForce 2 or geForce 3. The Gloria III is a Quadro 2 card. I made my own Quadro 2 from a regular geForce 2 GTS (instructions are all over the web) and saved a couple of hundred dollars. You can also get "modified" geForce dirvers which enable the hidden Quadro features, if you don't want to modify your geForce board. You can find links from www.3dchipset.com, or do a Google for "soft quadro".