http://en.hotmine.io/So I send you 6400 in btc and wait until sept 2016
I get 28th that burns 3.3kwatts of power and of course provide a boiler to heat my home.
3.3kwatts will give about 13,000 btu of heat.
Model
HOTMINE TOP 28 Thash
Hot-water boiler (miner) is mining bitcoins and heating water. You can use it in combination with batteries, fan heater or other equipment.
100% economy on cost of the heat!
3,3 kW electricity consumption — heating up to 50 sq.m. of your house (when using a fan heater)
Computation Power — 28 Thash. Bitfury's 16 nm chips are used.
Water temperature — 65C
Applications: heat-insulated floor, heating, reheating, DHW
Release date — September 2016, preorder available — $6400
you can buy 7 s-7's for about $5200 and get them in 1 week. add in 800 in psu's and you spent 6000 and get to mine from march 4 th to sept 4th
with 32th of hash. the economical calculations are just not in favor of your gear. for 6400 I want it in about 1 month not six.