I just looked online and Bitmain is having a sale on the S9 and T9+. A 14TH S9 with power supply is $1864 but you can buy T9+ 10.5T with power supply for $855. You could buy 2 T9+ for $1710 and have a total of 21 TH/s. I did the calculations with my power cost of $0.064 a kw at the current rate of BTC I would generate about $289.97 profit a month with the 2 T9+'s as opposed to $219.48 a month profit with one S9. I would ROI in about 6 months and even sooner if I got a hold of some good $200 coupons.
Am I missing something? It doesn't seem to make sense to buy an S9 at the current prices.
If you are short on power or space the S9 might work out better.
Depending on my locations I have both issues.
1 spot has just about unlimited power (200+A of 220v) for me to use. So long as I can fit it in a 1/4 equipment rack.
The other my "warehouse" has as much space as I want. But with a little less then 40A of 110.
So yes in theory you are correct. But for me I would have to sit and do the calculations as to which would work better for me.
-Dave