Thought maybe I would get some help here..

Anyone know what wattage (3) 1080ti's running at 80% load pull?
Wondering if I can add an MSI RX480 8gb Gaming X to the same miner and if my EVGA GQ 850 Watt 80 Plus Gold would support all of them.
Not even sure if it is possible to have Nvida and AMD on the same build..