So, 1024 x 1280 with 16AF and 4x MSAA (I assume this should be the "Edge-Detect" setting in the CatalystCC) requires an HD4870... I'm wondering if I could pull it off with my lower level HD4770. Maybe with only 8AF and the new Catalyst 10.1?
The 8800GT runs it with about 45 FPS average and the HD4770 is just slightly faster.