AnandTech says that NVIDIA has invalidated the existance, not only of AMD's hardware, but of much of their own line up with the release of GeForce 8800 GT:
"It's really not often that we have the pleasure to review a product so impressively positioned. The 8800 GT is a terrific part, and it is hitting the street at a terrific price (provided NVIDIA's history of properly projecting street prices continues). The performance advantage and price utterly destroyed our perception of the GPU landscape. We liked the value of the 8800 GTS 320, and we were impressed when NVIDIA decided to go that route, providing such a high performance card for so little money. Upping the ante even more this time around really caught us off guard.
This launch really has the potential to introduce a card that could leave the same lasting impression on the computer industry that the Ti4200 left all those years ago. This kind of inflection point doesn't come along every year, or even every generation. But when architecture, process enhancements, and design decisions line up just right, the potential for a revolutionary product is high. Maybe our expectations were lowered due to the lack luster performance of the 8600 and 2600 series of cards, as well as the lack of true midrange cards priced between $200 and $250. Even without the sad state of the low end and lack of a midrange part, the 8800 GT is a great option."