BTW, one more thing... Both HashFast and CoinTerra cannot produce performance-per-electrical consumption that Black Arrow claims they could. So, I'm getting even more skeptical...

CoinTerra TerraMiner @ 2 TH/s consumes 1,650 W
HashFash Sierra Evo 3 @ 2 TH/s consumes 2,200 W

... as for Black Arrow Prospero X-3 @ 2 TH/s, they claim 1,050 W. Either this is a blaten lie and scam, or they have super engineers.