I gave them a go. Benchmark3D had the card list with the 7900 series listed. They might be good to go for a single 7970 but I got nothing but headaches with crossfire. When I finally did get the drivers to enable crossfire my second gpu stayed at 925/1575 of all things. I went to uninstall them they were not listed in the Control Panel's Program and Features. Used Atiman to clear everything out. Could be just my bad luck with them. Gonna roll back to 12-2 pre-certified and use the atipdlxx.dll to fix the 2d/3d clocks bug.