I upgraded to a Radeon HD 5870 a few months ago. So now I have a Radeon HD 4850 card just laying around and I want to put it to work. I know that if you have an Nvidia setup that you can dedicate another card to PhysX. For example, if you have a GTX 285 and if you have a 9800GT, then you can have the GTX 285 dedicated to your primary video and have the 9800GT dedicated to just PhysX. So is there any way that you can do the same thing for the ATI setup that I have? Thanks in advance...
More aboutsecondary dedicated card
No. currently there is not support for that. and its not even the same series.
PhysX works only on Nvidia cards. So the answer is no. You can though run an ATI primary GPU with a nvidia physX card(except Vista)