it looks like almost everyone with this board is running a combination of amd and nvidia cards? any reason not to do all amd or all nvidia? is anyone using simplemining? are all 3 molex/ATX connectors necessary? i have a server psu with a breakout board and i'm still playing with various mobo/cpu/card combinations trying to find the ideal one. having a lot of issues with the asrock h81 pro btc 2.0 and simplemining :/