Not sure if this question has been fielded yet, but forgive me if it has.
I'm thinking of buying a pair of 4850's to replace an 8800gt. Obviously physx won't run on the ATI cards, but, could I put the 8800gt in the 3rd pci-x slot in the system and use it only as a physx processor? I've seen Geforce SLI setups where they have two new high end cards SLI'd, and like a 9600gt running the physx. Just wondering if it'd be possible with an ATI/Nvidia combo.