The GMO B2 is a SHA-256 miner (bitcoin, bitcoin cash) scheduled to be released in October 2018 by Japanese telecom giant GMO. These units offer 24 TH/s delivered by 1950W of power making them slightly more powerful and efficient than the Antminer S9, but not more than a few other miners slated to be released in the near future even though they purportedly leverage 7nm technology.

We think the likelihood that these are legitimate miners is high, but the profitability may not last long in the next paradigm of next-generation miners. If this is a real miner, it will not be a paradigm shift and therefore not too materially different from mining with a previous-generation Antminer S9. In fact it’s less efficient than an S9. This miner makes no sense to us and expect we’ll hear about plans for a GMO B3, which we hear unsubstantiated rumors of a 33 TH/s, 3417W B3.

At 1950W, the GMO B2 is an ideal choice for colocation. This unit performs optimally when using 208, 220 or 240V power sources which are often difficult or impossible to find at residential locations. The miner produces a lot of heat so it is best run in a location with a managed climate.

For a current profitability estimate be sure to check out our mining calculator.

About GMO

GMO is a Japanese telecommunications conglomerate that has decided to throw their hat into the mining ring. GMO has announced recently that they will be releasing a release 7nm miner for bitcoin. They claim they will charge $1999 for a 24TH/s miner requiring 1950W.

Given a limited track record of producing mining hardware, it is not guaranteed that this is not a marketing ploy that will not result in delivered units. That being said, it is also not impossible to think that GMO might have the correct connections to access a node, though a 7nm node does make this a bit harder to believe.


  • Power Consumption: 1950W
  • Cost: $1999
  • Hashrate: 24 TH/s
  • Efficiency: 81.25 W/TH
  • Probability of Delivery: Likely Vaporware

If you do decide to purchase an GMO B2, we hope that you’ll consider the Miners’ Union for your colocation needs!

Leave a reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.