Hello everyone. I got tired of reading all the forum posts where someone asks if a dedicated physx card will be worth having, and then saying they would give it a try without coming back to let us know how it went, so I did it. I had to modify the drivers of course, but before I found something else to do with my 580, I put it in along with my 680. GTX 680 gave me avg 54 fps in Arkham City, but jumped to 71 with the 580 handling the physx. Unfortunately, the Metro 2033 benchmark always gives me 33 fps no matter what settings I use, so if anyone knows a good way to bench that game let me know. I will do some more testing to make sure that score wasn't a fluke. I will also try with my old GTX 275 instead of the 580.