Hi! Please refer to the following links: http://techreport.com/discussions.x/14147 http://www.gamasutra.com/php-bin/news_index.php?story=19761 I am planning to buy a Dell XPS M1730 Laptop and I am confused about the latest development in physics technologies. 1) The article mentions that If someone has 3 graphics cards, he can use 2 for graphics and 1 for physics. If for eg. I have 2 graphics cards and 1 physx card then is it possible to have that similar configuration(with the software update)? Or the physx card will just lie there useless (will the latest driver use it)? 2) With recent development, as Nvidia converts all GF 8xxx+ cards to PhysX cards(with a software update), more games will be using the PhysX SDK. So is it worth going for a PhysX card or just hang on to dual SLI 8600? 3) If a graphics card is doing the work of physics, then is it also handling graphics? If i have two graphics cards, and one of them is handling physics, then will the graphics processing take a hit? If yes, then will having a dedicated physx card offload the processing and free the graphics cards for graphics? Thanks, fb.

I would not get a physx card. From what ive read it will only be of any use if the game is using Ageia (now Nvidia) PhysX, most games use Havok. Also the card tends to be kinda useless as the physX sdk running in software mode (I believe I read a while back) is sometimes faster then when the card is present. Physics in the future will be helped out be the gpu be it atiamd or nvidia.
I would avoid it.