Like many of you I am really looking forward to the release of Unreal Tournament 3, which by the way is now rumored to occur on September 3rd. (September 3rd has been shot down by Mark Rein) Doc Shock, a senior member of the Epic forums has translated some parts of a interview with Tim Sweeny that is featured on the German website of PC Games Hardware. [H]ard|OCP then brought up the fact that because AMD/ATI chose to concetrate on geometry performance more than the fillrate performance of their R600 line, Nvidia may end up having a nice advantage when running Unreal Tournament 2003.
Using our comparison tool you can see that the 8800 GTS has a higher texture fillrate, but lower pixel fillrate than the HD 2900 XT, but both the 8800 GTX and 8800 Ultra have higher pixel and texture fillrates than the HD 2900 XT. It should also be noted that like the Unreal Tournament games that came before it, Unreal Tournament 3 is part of Nvidia's The Way It's Meant To Be Played program.
I am not as well versed in fillrate and geometry knowledge as Mike, so I will leave any further comments to him.