Soleron on 27 May 2009
The Xenos is based on ATI's R600 architecture, which is substantially newer than Nvidia's G70. Nvidia's next-gen chip, the G80, was the one which competed with R600 on the desktop and that has unified shaders too.
Incidentally the Wii graphics chip is a heavily optimised R300 which is years old.
So, yes, the Xenos is more powerful and flexible. A potential "PS4" would use a graphics chip with unified shaders, since both ATI and Nvidia use them and they are the only choices at the momemt. Unless we get Intel's Larrabee.
