The Bitmain Antminer S21+ (225Th/s) is a high-performance Bitcoin ASIC miner engineered for the SHA-256 algorithm, purpose-built for Bitcoin (BTC) mining. As an enhanced variant of the S21+ series, this model delivers higher hashrate output while maintaining strong energy efficiency and a reliable air-cooled architecture.
With a maximum hashrate of 225 TH/s and a power consumption of 3712W, the Antminer S21+ (225Th) achieves an efficiency of 16.498 J/TH, making it an excellent option for miners seeking a balance between power density, efficiency, and deployment simplicity.
Released in June 2025, this miner features Bitmain’s proven dual-fan cooling system, ensuring consistent airflow, stable operating temperatures, and long-term durability in demanding mining environments. Its standardized industrial chassis allows for seamless integration into mining farms, containers, and hosting facilities.
Backed by Bitmain’s trusted Antminer platform, the S21+ (225Th) is ideal for professional mining operations, hosting providers, and serious individual miners focused on scalable, efficient BTC production.
225 TH/s Bitcoin hashrate
Efficient 16.498 J/TH performance
Proven air-cooled design
Dual high-efficiency cooling fans
Optimized for SHA-256 / BTC mining
Compact, rack-friendly form factor
Built on the Antminer S21+ platform
| Specifications | |
| Algorithm | SHA-256 |
| Hashrate | 225 TH/s ±5% |
| Power Consumption | 3712 W ±5% |
| Efficiency | 16.498 J/TH |
| Noise Level | 75 dB |
| Dimensions | 400 × 195 × 290 mm |
| Weight | 21.5 kg |
| Interface | Ethernet |
| Temprature | 10 – 40 °C |
| Humidity | 5 – 95% (non-condensing) |
