Legit Reviews posted a review on the ATI Radeon HD 2900 XT Video Card
Contrary to what you may believe, the HD 2900XT that we are looking at here today is not meant to compete against NVIDIA’s 8800 Ultra or even the GTX. Instead AMD aimed at a lower price target, the 8800 GTS. With a launch price of $399 AMD intends to take the mid/high end market segment instead of going after the faster 8800 GTX and Ultra. As much as they want to sugar coat it, the R600 in its current iteration is just not capable of getting the clock speed up to the level needed to go toe to toe with the GTX/Ultra in every situation...ATI Radeon HD 2900 XT Video Card Review