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3D Feature Comparison




3D FEATURE COMPARISON GRAPHIC



Fill Rate Performance Comparison

Sustained Fill Rate Graph


Performance for perspective correct, filtered, MIP mapped, Z-buffered, alpha-blended, fogged, textured 50-pixel triangles rendered on a Pentium-90 PCI system.

Depth complexity measures the rendering complexity of a scene. It's the average number of times a pixel is rendered per frame. For most 3D games, the depth complexity is between 2 and 4. A game with a depth complexity of 3 at 640x480 at 30Hz requires fill rates of at least 27 Megapixels/sec. An entry level Obsidian coupled with an Intel pentium-90 or PowerPC 603 delivers over 90 Megapixels/sec textured fill rate and over one million textured triangles/sec. Obsidian provides the fill-rate performance required for games with high depth complexity to break the 30Hz barrier. The others just don't do it.



Triangle Scalability

PERFORMANCE GRAPHIC

10 pixel filtered, texture mapped, Z-buffered, triangles with LOD MIP mapping
50 pixel filtered, texture mapped, z-buffered, alpha blended triangles with LOD MIP mapping

ATIs XPERT@Play 3d


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Last Updated: May 30th, 1997

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