engenheiros do MIT confirmam que o demo da NVIDIA "dawn" roda 15% mais rapido numa ATI radeon9800 que em uma NV30 e ainda com qualidade de imagem superior , em inglês :
ATI vs NVIDIA: ATI's won the heart of Dawn 01:09 AM - wilfred
To have an idea how far superior is ATI's present king-of-the-hill Radeon 9800 Pro, compared to NVIDIA's NV30 part, a group of MIT engineers discovered with their OpenGL wrapper that even with the extra overheads, the ATI beats NVIDIA's own part to its own tests.
Here's a breakdown on what the 9800 Pro did to embarass the NV30:
It runs 15% faster than NV30 on the 9800pro, and it also runs faster than NV35 (we are unable to personally confirm this but a user with both cards and FRAPS could).
Creates higher quality images than the original due to the normalization being done in a fragment program (dp3/rsq/mul) instead of in a normalization cubemap which the FX extensions does directly in hardware
The OpenGL wrapper adds more overhead, as it has to interperet code calls for Nvidia extensions and map them to ATI/ARB extensions, and yet it still runs faster on the ATI card, due to its more sophisticated pixel shader engine.