Ok. So I just bought another gigabyte amd radeon hd 6670 1gb card. It hyper crossfires BUT, skyrim lags like hell when I put both together. But if I run just one, it works like a charm. I've tried renaming it to Fallout3.exe, tried 11.11, 11.11b and 11.11c but none of them work either. I've even tried the alt+tab trick but that doesn't work. PLEASE HELP!