b1gapl,
True but 8800Ultra will have also much higher shader clock. I heard it will have speed of 1.6GHz or something like that. GTX has 1.35GHz shader speed.
Anyway, 2900XT is slightly faster than 8800GTS and it will be released on May.
2900XTX might get delayed to Q3 2007, because of it's poor performance.
Fudzilla