I still don't get it:
(all from wiki)
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PhysX is a proprietary realtime physics engine middleware SDK acquired by Ageia (which itself was acquired by Nvidia in February 2008[1]) with the purchase of ETH Zurich spin-off NovodeX in 2004. The term PhysX can also refer to the PPU add-in card designed by Ageia to accelerate PhysX-enabled video games.
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Their engine(NV), their company, their rules.
Give them one reason why they should spend a single nickel to optimise it for CPUs they don't sell or ATI cards, which is a competitor.
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the decision was made due to development expenses, and for quality assurance and business reasons
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They they do what they think is best for their own company.
It's not like NV is a NPO - they paid for it too.
Maybe ATI want to shove some green over?
Now neither of the two is really dominating the market, tell ATI to remove the finger and give it go themselves.
also:
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Nvidia provides both the engine and SDK for free to Windows and Linux users and developers
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I'd say this enough charity.
