DarkSable :
chicofehr :
Nvidia makes water physics and AMD makes hair physics. Only problem is that the water physics requires an Nvidia card while the TressFX will work on any computer with DX11 Compute. I hope AMD counters with some water physics soon. I hate it when some features require you to buy a certain brand.
So... you want every brand to be identical, with no reason to even make a choice?
Actually, Geforces and Radeons are very different. Each one works in their way, like multi-monitor support, multi-card system, antialiasing methods, performance in specific scenarios, etc.
But pure technology like this should never be restricted to one vendor. If I were making a game to sell millions, why would I make it need a technology that won't work on half the market? For this reason, no game will depend on Physx, no matter how cool it is. And, for this reason, so many games now are coming in DX11, because everyone supports it now.
Note that I said 'depend', not 'use', many games use Physx, but none of them need it to run, otherwise they wouldn't work properly on AMD cards. And, because of that, the effect is mediocre, with many particles jumping around and that's it.