The X850XTPE slaps the 6800 Ultra around like a little b*tch in raw power. The 6800 Ultra is a 16 pipe card with 400/1100 clock speeds, and the X850XTPE is a 16 pipe card with 540/1180 clock speeds. Of course it still lacks Shader Model 3, and it is a lot more expensive. But there is no point in really getting either of them in AGP. I would suggest getting a cheap PCI-e mobo, and either a 7800GT or an X1800XL.