RCFProd :
Are you sure you want to setup a crossfire RX 480 system? I generally really don't recommend SLI/Crossfire because game optimalisation has simply been way too poor lately.
Right now I'm going to buy a single RX 480. Maybe in the next year I will buy second one. And I'm just asking what should I get for that Crossfire.. I've seen that those two guys had great performance in games, better than 1070 and they're nearly as good as 1080.