Before people get head over heels into spending megabucks on ATi cards, this is just the first WCG app to use them. Others may be better suited to nVidia, there's no way of knowing until they hit. If a few video cards here and there doesn't matter to someone then it's all good, carry on. Making long term decisions based on one science app may be a risk for someone on a tight budget, however. Just be a little thoughtful is all I'm suggesting.