First off..... The x850XT PE is PCIe only... Secondly, it pwns all other cards hands down (I am an nVidia fan BTW) and thirdly, the 6900 series will be out in early June.. The 6950Ultra EE will be exclusively PCIe and will use TurboCache2 Extreme, allowing it to have an integrated memory controller which will infact take full advantage of the PCIe bus, which will actaully need to be overclocked extensively... ALso, the 6900 series will be dual core, not using SLi, and quad core (esentially two dual core cards) in SLi mode. So eat it ATi!