Inside the Xbox 360's graphics

The graphics chip that ATI has designed for the Xbox 360 is, in some ways, more advanced than anything we're likely to see on the PC this year. In order to understand it better, Dave at Beyond3D has spent time talking with a number of folks inside ATI's Xbox graphics development effort, and he's produced an in-depth look at the architecture of the Xbox 360 GPU. Because it's based on a combination of research and informed speculation, the article adopts an unusual convention, showing Beyond3D's conjecture in blue type, while the rest is in black. Dave walks us through the Xbox 360's system architecture, shader arrangement, and the like, and then asks the question "Why not now for the PC?" The answer is understandable, if not entirely satisfying.
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