WE ARE still trying to find out what is happening with Nvidia's and ATI's graphic drivers. This morning there are still no sign of real RTM (Release to Manufacturing) drivers.
ATI has a kind of RTM driver but Open GL doesnâ€™t work on that, while Nvidia has a WHQL driver with OpenGL broken and various Direct 3D bugs in the driver package.
ATI's driver can run 3Dmarks and most of the Direct 3D games, which implies that ATI is a bit more ready with its Direct3D drivers. Nvidia's Open GL driver is in better shape but still not even close to the one for Windows XP.