PC Stats has posted an introduction to the nVidia GeForce 7800GTX Series

Summer has come, the birds are singing, the leaves are green, and we have a new graphics chipset from nVidia to write about. The GeForce 7800GTX chipset has a simple purpose; to catapult nVidia back onto the 'fastest, most expensive videocard' throne. Obviously, it and its inevitable series of ultra-extreme-pro-express offshoots will make up the high-end of nVidia's next wave come christmas time, but for now it's a lone gunfighter with sights set squarely on ATI's X850XT PE videocard. nVidia has stated that the 7800GTX GPU should make any modern game smoothly playable at 1600x1200 with 4XAA when partnered with a current high-end processor. This is not the most ambitious goal in the world, since today's top level videocards can more or less accomplish the same feat.

Introduction to the nVidia GeForce 7800GTX Series