AntMiner: Bitmain's ASIC Mining Hardware Explained

AntMiner is a brand of application-specific integrated circuit (ASIC) miners manufactured by Bitmain Technologies, a company headquartered in Beijing, China [3]. Since its founding in 2013, Bitmain has released various models designed to mine specific cryptocurrencies using different hashing algorithms [3]. The product line includes the Antminer S21, intended for Bitcoin, and the Antminer HS3, which is built for the Handshake network [1][2].

Key takeaways

• Bitmain was founded in 2013 and became the world's largest ASIC chip designer by 2018 [3].
• The Antminer S21 delivers a hash rate of 200 TH/s with an efficiency of 17.5 J/TH for SHA-256 cryptocurrencies [2].
• The Antminer HS3 operates at 9 TH/s for the Handshake algorithm with a power consumption of approximately 2080W [1].
• Calculations indicate the HS3 model was operating at a daily loss as of mid-2026 based on standard electricity rates [1].

Origins and Market Dominance

Bitmain Technologies was established by Micree Zhan and Jihan Wu in 2013, quickly rising to prominence within the cryptocurrency sector [3]. By 2018, the company had established itself as the world's largest designer of ASIC chips for bitcoin mining and operated significant mining infrastructure, including the pools BTC.com and Antpool [3]. During that period, Bitmain reported substantial profits, though it later faced financial difficulties, including reported losses and layoffs in late 2018 and early 2019 [3]. The company's first product, the Antminer S1, offered 180 gigahashes per second, paving the way for subsequent generations of hardware [3].

Technical Specifications and Performance

Modern AntMiner models vary significantly in their design and application. The Antminer S21 series, announced in late 2023, utilizes advanced 5nm ASIC chip technology to support the SHA-256 algorithm used by Bitcoin, Bitcoin Cash, and Bitcoin SV [2]. The base air-cooled model achieves a hashrate of 200 TH/s with a power consumption of 3500 W, resulting in an energy efficiency of 17.5 J/TH [2]. In contrast, the Antminer HS3 is optimized specifically for the Handshake mining algorithm, offering a maximum hash rate of 9 TH/s and a power consumption of 2079W [1].

Profitability for these machines fluctuates based on market conditions and energy costs. A profitability analysis for the Antminer HS3 as of June 12, 2026, estimated that the device could mine $3.44 worth of Handshake daily but would consume $4.99 worth of electricity at a rate of $0.1 per kWh, resulting in a projected daily loss of $1.55 [1].

Why it matters

The development of AntMiner hardware is central to the cryptocurrency mining ecosystem, as increased efficiency allows miners to remain competitive amid rising difficulty and reduced block rewards [2]. The release of the S21 series was specifically timed to address the industry's need for lower energy consumption per terahash leading up to the event in April 2024 [2]. However, the financial data surrounding niche miners like the HS3 illustrates the volatility of the sector, where hardware capabilities and energy costs do not always guarantee profitability [1].