Yes thats the point pretty much I would be happy with lion if it runs my gtx 560ti coming out of my old amd pc. Because I don't plan on buying the latest generation cards aren't they like 500 bucks and up something like that lol? Thats why I didn't even buy one for the pc because I can still game with the 560ti, I'll get a better card in the future. I'll be broke upgrading every 6 months.
Another question does lion have the best nvidia driver built into the osx for the 560ti or after installing and booting up do I simply go to nvidia.com and do the normal selecting the model card and OS like you do in windows?
Please take this discussion to another thread. I already have you a link to another thread that is all about using non EFI cards in a Mac Pro. It provides links too all the drivers you would bed and all the answers to your questions about what you can use.