SimQ has taken a look at ATI's Radeon X1600 XT and Radeon X1800 XT and discusses the Ultra Threaded Architecture:
Before delving too deeply into ATI's new architecture, a brief glance at the main points of the graphics boards tested for this article is in order. Sad to say, we were unable to obtain an NVIDIA 7800 GTX for this article to evaluate how well the high-end graphics boards of these two competitors fare against one another in our benchmark suite. Of course SimHQ would be more than willing to examine NVIDIA's parts if they become available at a later date. As a result of this situation, however, special attention will be paid to the performance gains this new generation of parts bring compared to the first of ATI's high-end, previous generation R400 family, the X800 XT..