Chart shows the return on investment of Antminer S-series miners:
S1 (yellow): approx released July 2013, power consumption 2 kW/TH/s
S3 (purple): approx released June 2014, power consumption 0.71 kW/TH/s
S5 (orange): approx released December 2014, power consumption 0.51 kW/TH/s
S7 (green): approx released Aug 2015, power consumption 25 kW/TH/s
S9 (blue):...
