Just a thought
It's interesting to see that 16 persons voted for the PPU (Ageia PhysX) option, when there's no realworld benchmark, yet, and no evidence that the PPU hardware will be supported, to it fullest extend, by a lot of developers, neither.
Are people really believing that game developer will start to work on gameplay designs that revolve extensively around PPU, supposed, capabilities? And therefore make their game almost unplayable on configs without PPUs?
Or do people think the fact that the PPU alleviates some work from the CPU will make games runs faster enough to warrant the purchase of this fixed function card in place of a, let's say a Dual-Cores CPU, which can be usefull for physhic... and everything else too...
...While I could understand someone telling that he wants a PPU in addition to other high-end parts (CPU+ GPU) for its config, I cannot, on the other hand, understand, why this person would take a fixed function PPU over a better CPU/GPU/RAM upgrade...
And this is assuming that the Ageia PPU is really usefull in realworld applications, something that still has to be proven.
In anycase my hat goes off to their marketing plan. They successfully implented the idea of a PPU in the core market's, the enthusiast segment, mind.