I have reinstalled many times Windows 10 and Windows 7, Multi GPU Crossfire not recommended. Battlefield 4 will crash every game or every other game with DX errors. Seems to work if I remove 1 of the gpus. runs longer if I use mantel and not dx11. seems to hold clocks, manual fans, disable ULPS does not work it will only disable for GPU1 have to go into registry to set ULPS to off for both cards then reboot. Yes I did read it, I know crossfire and sli does not seem to work stable yet. even when using it to only control just the fans... it would crash, have not had a single issue since I uninstalled.