Finally my 100GH/500W BFL are heating half the house silently. They almost already mined the cost of the Monarch I ordered on black Friday. This is my "ROI" concept, if the hardware can mine the cost of the next generation hardware it doesn't matter if it ROIs or not. Ofcourse you can't know that in advance but that wouldn't be any fun now would it!?

Now I just need a passively cooled 500W miner for the other side of the house, winter is coming!