Description

The Antminer S21 delivers 245 TH/s of SHA-256 hashrate with a power consumption of 3,500 W, achieving a market-leading efficiency of 14 J/TH. Built with Bitmain’s latest chip technology, the S21 is engineered for high performance and reduced energy costs, making it one of the most efficient air-cooled Bitcoin miners available. Its dual-fan cooling system ensures reliable 24/7 operation in a range of environments, while the robust industrial design provides stability even under heavy workloads. With its combination of top-tier efficiency, compact form factor, and dependable output, the S21 is an ideal choice for both large-scale mining farms and professional operators seeking to maximize profitability. Available in: US HK (lower rate available)