Today at Cebit saw the launch of nVidia's latest group of graphics cards, The 7900 GTX/GT and the 7600GT which is meant to replace the venerable 6600 GT, these are all 90nm based products and should be available now.

The following sites have some reviews including benchmarks Anandtech, Hexus and Tom's Hardware who also cover Ati's X1800 GTO whcich was also launched today I think.