The cost of the Antminer S9 differs depending on which store you buy. The release cycle of a new generation of mining hardware every few months is likely to decrease from this point on, as manufacturers have transitioned to cutting-edge 16 and 14nm designs. There was accumulation of profits, in China, where mining is most profitable that resulted to several contenders e. Note that Power Cost will be specific to your location and that Difficulty changes every 2 weeks, usually to the upside…. These are things you need to know before you go all out with Antminer S9: 1. Of course, supposing that all factors were to stay constant for such impressive result despite the fact that it is very unlikely in the constant-changing world of Bitcoin! On the contrary, profitability will increase due to halving that could bring about a higher Bitcoin price and reduced competition.