ATI Technologies has been actively working to lead the graphics card industry with their latest introduction of the “X” series of graphics cards. Recently they brought out the X700 which is the first mainstream PCI Express graphics card. Their top model, the X800, created a big fuss in the market when it was released on the AGP bus. Many review sites said that the addition of PCI-E support is still unnecessary since the graphics card is still limited by the CPU. Unfortunately, among all the reviews on the internet on the X800, few, if any, take a look at the PCI-E edition of the X800 XT. Recently, ATI found one lying around and agreed to send it out to me. Today, I will take a look at this card’s performance in two completely different systems. The first system will use the P4 3.4EE running on the 800MHz FSB and the second system will be Intel’s latest P4 3.46EE running with their fastest 1066MHz FSB. Let’s see how this card likes the additional FSB bandwidth and see if it makes much of a performance difference!