Why does Nvidia always release x800 that are comparable to the previous series's 800 cards but for more money? Are they just pretending to release something that might be better when they do 7800 then 8800 then 9800? Granted there is DX10 nowdays (which was a failure imho due to vista requirement for such small marginal visual improvements). Am I hitting the nail on the head when I think they're just trying to charge 100$s of dollars extra just to sell stuff and pretend the performance is worth that much more?