The Bitmain Antminer S21 (200Th/s) is a next-generation Bitcoin ASIC miner engineered for reliable, cost-effective SHA-256 mining. Designed specifically for Bitcoin (BTC), the S21 series delivers a strong balance of hashrate, power efficiency, and proven Bitmain build quality—making it ideal for both professional mining farms and serious individual operators.
With a maximum hashrate of 200 TH/s and a power consumption of 3500W, the Antminer S21 achieves an efficiency rating of 17.5 J/TH, offering dependable performance in environments where power costs and infrastructure flexibility are critical. This makes the S21 a solid choice for miners looking to scale without the complexity of hydro or immersion cooling.
Released in January 2024, the Antminer S21 features a refined air-cooled design with dual high-performance fans, ensuring stable operation under continuous load. Its compact industrial chassis allows for easy rack or shelf deployment in standard mining facilities.
Backed by Bitmain’s globally trusted Antminer platform, the S21 (200Th) is well-suited for BTC mining farms, hosting providers, and independent miners seeking proven hardware with predictable performance.
200 TH/s Bitcoin hashrate
17.5 J/TH energy efficiency
Reliable air-cooled design
Proven Antminer S21 platform
Ideal for small-to-mid scale mining operations
Compatible with standard mining infrastructure
Optimized for SHA-256 / Bitcoin mining
| Specifications | |
| Algorithm | SHA-256 |
| Hashrate | 200 TH/s ±5% |
| Power Consumption | 3500 W ±5% |
| Efficiency | 17.5 J/TH |
| Noise Level | 75 dB |
| Dimensions | 400 × 195 × 290 mm |
| Weight | 15.4 kg |
| Interface | Ethernet |
| Temprature | 5 – 40 °C |
| Humidity | 5 – 95% (non-condensing) |
