As of now, there are no graphics cards that take advantage of PCI-Express. In fact, there are only a few high-end PCI-ex cards available. The X800XT Platinum is probably the best one, but even it gets beat out by its AGP counterpart. PCI-ex is the future though, and once the flaws gets worked out with it, it will become the new standard for video cards. The next generation will more than likely utilize PCI-ex and make AGP to PCI-ex like PCI is to AGP 8x.