I will heat my house fully with cards, Im starting with 2*1070 + 1080ti in one room (its around 650W) and will end first "epizode" with 18 cards in somewhere center of my housw and opened doors (it will have like 4-5kW). Its nice to use electricity to something usefull and only dont waste it or gas...
Amd cards will heat your house a bit more than nvidia. Corect me if I'm wrong
You are not. I just set up my first AMD rigs (I have two Nvidias already) and damn if overheating isn't an issue in the rackmount case, I have to run it with the lid off (and that is with it taking in air directly from outside AND mining crytponight)!