This is scary:
Antminer s9
13.th/s
1300w
time to generate 1 BTC with 13.5th/s 175 days
daily power cost at 0.06 cent rate, 1.87 US/day
175 day x 1.87USD =
only 327.25USD power cost to generate one BTC!!!!
Cost of 327USD would be fine at rates like 700-1000USD but hashrate is atleast 3 times too small to support current 2200USD price.
Hashrate has no time to correct this, price will.
How scared you'd be if you suddenly find out that 4 GPUs RX-480 in a simple rig mining ETH and converting to bitcoin AT TODAYS RATES would give you the same amount of Bitcoin as an Antminer S-9?