Based on the specs for a T19, this is an 84 TH/s rig that consumes 3,150W.

At today's difficulty and BTC/USD price, this brings in $14.30 per day revenue. If the cost per kWh is about the U.S. residential average, this will cost $11.34 in electricity, netting $2.96 in gross profit.

Subtract depreciation for the CapEx (cost of the 4 X T19s and the Black Box), and there's many years, at these levels, before a positive ROI will begin.

I can't imagine being in that room with that much heat being pumped out, even with significant underclocking.

If the intention was to be mining at home, for profit, then skipping this all and buying bitcoin outright almost certainly will result in having more bitcoin -- even after mining, 24x7 for several years!

At a lower cost per kWh, especially down near the $0.05 per kWh and less that the large industrial miners are operating at, the equation can make bitcoin mining a more rational economic decision.

Based on the specs for a T19, this is an 84 TH/s rig that consumes 3,150W.

At today's difficulty and BTC/USD price, this brings in $14.30 per day revenue. If the cost per kWh is about the U.S. residential average, this will cost $11.34 in electricity, netting $2.96 in gross profit.

Subtract depreciation for the CapEx (cost of the 4 X T19s and the Black Box), and there's many years, at these levels, before a positive ROI will begin.

I can't imagine being in that room with that much heat being pumped out, even with significant underclocking.

If the intention was to be mining at home, for profit, then skipping this all and buying bitcoin outright almost certainly will result in having more bitcoin -- even after mining, 24x7 for several years!

At a lower cost per kWh, especially down near the $0.05 per kWh and less that the large industrial miners are operating at, the equation can make bitcoin mining a more rational economic decision.