Japan's internet conglomerate GMO Internet Group officially unveiled its next-generation 7nm ASIC Bitcoin miner, the GMO miner B3, on Monday, July 2. The B3 is an upgraded version of its predecessor, the GMO miner B2, featuring significant improvements in hashrate, power efficiency, and smart tuning capabilities.
Hashrate and Power: Up to 33TH/s
According to GMO, the B3 uses the same 7nm process ASIC chip (GMO72b) as the B2, supporting SHA256-based cryptocurrency mining including Bitcoin and Bitcoin Cash. While the B2 delivers a hashrate of 24TH/s, the B3 pushes the maximum to 33TH/s. Power consumption at 24TH/s is 1,950W (81W/TH), identical to the B2; at full 33TH/s output, power draw rises to 3,417W (103W/TH).
Key Feature: Hash Power Optimization
The B3 introduces a novel “hash power optimization function” that automatically or manually adjusts the hashrate and power consumption based on mining conditions and global network difficulty. In automatic mode, the miner dynamically tunes hashrate between 24TH/s and 33TH/s according to electricity costs and global hashrate indicators to maximize mining efficiency. Manual mode allows users to set custom parameters. GMO noted that this feature was accelerated due to customer requests during B2 sales.
Pricing and Availability: Still $1,999
GMO maintains its monthly pricing policy. The B3 is priced at $1,999 per unit for July deliveries, matching the B2 launch price. Shipments are scheduled to begin in November. Existing B2 order holders can request a free upgrade to the B3. Payment can be made in BTC, BCH, or USD. The miner comes with a 180-day warranty, and the price includes two power supply units but excludes shipping.
GMO's Crypto Ambitions and Market Context
GMO, a major Japanese internet firm, has aggressively expanded into the crypto space since 2017, including mining farms, miner sales, and an exchange. The B3 launch arrives amid fierce competition among mining hardware makers, where 7nm chips represent a critical efficiency edge. GMO emphasized that the B3 retains all B2 services, such as daisy-chain connection for up to 32 units, online firmware updates, and real-time monitoring, further lowering operational barriers.
Analysts believe that with Bitcoin price volatility and rising network hashrate, miners need smarter, more efficient hardware. The B3's optimization function could help operators adapt to varying electricity costs and difficulty levels. Whether GMO can deliver on schedule in November and how the market accepts this new model remain to be seen.