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 :/
I'm running on 2 13 gpu nvidia rigs using this mobo without any problems....only problem i have is the heat

I find it easier to not mix amd and nvidia to be honest with you..
i have some experience with about other motherboards but i always prefer to keep the gpus the same brand/style. evga 1060, pny 1080ti, msi 580. it makes it not only easier for bookkeeping for troubleshooting as well. i was just wondering why so many people were mixing gpus with this thing? i just setup this board about 10 minutes ago with 6 pny 1060 6gb, i'm about to go try to add 6 more.
have you tried getting more than 13 gpus on this thing?
edit: got 12 running fine, gonna try to do 16 on monday
never tried...based on what i'm reading. it won't happen unless it's a mining card (which I can't seem to find it cheap) or else it'll be nice to max them out
I have/had 3 13 gpu running (sold 1 that had 13 1050 ti's) with this board without any issues. I tried the asrock one and for some reason..I was having issue running x16r algorithm (it'll randomly shut down). Finally I got pissed and bought another b250 board from microcenter ($109) and replaced the motherboard on the same set up....starts right up and it hasn't shut down on me for 2 straight days now..