I think he means stereo 3D -

I have the set up but haven't tried it yet myself. Main reason was the suggestion to uninstall the 3D Vision drivers (which I did) to improve performance in certain areas (which it did, and my system is more than capable of high settings). Secondary reason: everyone says it's not working anyways. Stereo 3D is a gimmick you say? You would eat your words if you played Portal 2.