Funny that's what they said about the S7. People STILL mine with them. If your source is right, add in the 24% tarriff and the shipping cost and your S15 costs $1500.00 to your door. At .055 per kwh it make $7.81 a day or takes 6.5 months to pay itself off. I'm no math whiz but for $1500 I can get around 7-8 S9i's these days that make $1.64 at that rate. My guess is that the S9's on ASICBoost will do just fine as long as your power rate is decent.

---

I think he is off. If the Watt draw was that low, why did Bitmain release a 1800 watt PSU? My guess is 32 Th/s pulling 1600 watts ATW.