No AGEIA! That is a card. I have heard of it on CRAZY MACHINES 2!
Ageia makes physics cards that add about 0.1% performance boost to your games.
Seriously they don't do anything.
Nvidia and ATI are basically the only graphics chipset manufacturers/designers out there.
Here's an idea;
Open your case, take out the graphics (carefully and without any static electricity involved), and take a picture of the slot. Then post it here and we'll identify it.