Rubbish. You have no idea what a 480 can do underwater. If he wants a 480, whats the problem? Not everyone is soley obsessed with bang for buck. Maybe like me the op has had a very good experience with nvidia, and that counts for something. Heat is the only issue IMO and sticking it underwater will sort that.
Rubbish, or you don't agree?
Either way, my point is still this, for everything you do to squeeze extra performance out of a GTX480, you can do the same with a 5870 and end up with even more performance for a whole lot less money.
Having a good experience with nVidia is relevant, how? So because you've had a good experience with one brand, you should use/try another brand that is currently clearly the better choice?