GeForce 8 users to get software PhysX support ... someday

nVIDIA is moving fast with their acquisition of AGEIA - during the fourth-quarter financial results conference call, the graphics giant announced that the company was planning to bring software PhysX support to the GeForce 8 GPU.

nVIDIA's CEO Jen-Hsun Huang revealed that the plan was to take the PhysX engine and port it to CUDA (Compute Unified Device Architecture). 

We're working toward the physics-engine-to-CUDA port as we speak. And we intend to throw a lot of resources at it. You know, I wouldn't be surprised if it helps our GPU sales even in advance of [the software PhysX engine]. The reason is, just gonna be a software download. Every single GPU that is CUDA-enabled will be able to run the physics engine when it comes. . . . Every one of our GeForce 8-series GPUs runs CUDA.

Huang isn't coy about talking about the reason for this move either:

Our expectation is that this is gonna encourage people to buy even better GPUs. It might - and probably will - encourage people to buy a second GPU for their SLI slot. And for the highest-end gamer, it will encourage them to buy three GPUs.  Potentially two for graphics and one for physics, or one for graphics and two for physics.

I'm still unconvinced.  First, I'd like to see how well the GeForce GPUs handle this port.  AGEIA's hardware was optimized for PhysX, the GeForce 8 isn't. 

Also, until someone shows me a game where this is going to add to the experience in such a way that it makes it worth spending huge money on up to three graphics cards, I still don't see this getting gamers to open their wallets any more than they already do.

Thoughts?