Radeon X1800 Ultra-threaded 3D architecture for maximum visual velocity. This is it. The new Radeon X1800 hands you the visual and performance possibilities you only dreamed of from a PC graphics processor. It has been designed with a radically new ultra-threaded 3D architecture and Shader Model 3.0, unleashing the most mind-blowing gaming effects. What's more, the X1800 introduces ATI's revolutionary Avivo, our new reference for video and display perfection.