It takes years to develope games and game engines, none of which would have been ready for nVidia\'s technology.
At the time of the release of nVidia\'s first T&L card, NO PC game supported hardware T&L. Even today, very few do (and only in a limited form), since the implementation of T&L support within DirectX7 and OpenGL drivers was very
Also, nVidia\'s GeForce256 was capable of 15m vertices
per second. This can result in 15mpps (as seen in the demos), however the PC game engines were designed for PC graphics cards which expects polygons as streams of 3 vertices each, therefore this effectively cut it\'s polygon rate to 1/3 of it\'s potential.
The next game engines from iD, EPIC and others have been designed specifically with T&L support from the beginning, therefore the performance gains will be massive.
The XBox graphics chip is based on the same
technology nVidia are using for their PC graphics cards. Directx8 has full support for T&L as well as support for pixel/vertex shaders. Microsoft conceeded that the PC will exceed the XBox specs within months of it\'s release.
So yes, 6 months is more than enough.