Still ATI need to support Physx, not just because nvidia do, but because unfortunately for us nvidia have the largest market share and they will push it, if its not supported in hardware we end up with a situation where some software titles get a massive boost over others for different hardware brands.
This can already be seen with 3dmark vantage making use of the physx acceleration offered by the 9800's gtx 260/280's.
Atleast one this is good though, with ati and blizzard teaming we should see a drastic increase in ati's market share, with 10 million people seeing "made for ati etc" as they fire up wow it should sell alot more cards.




, it's just that Brook+ is open source and CUDA is not. Otherwise check this article on ATI's doing in GPGPU:

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