Bitmain Antminer S21+ (225 TH/s) – Ultra-Efficient SHA-256 Mining Power

The Bitmain Antminer S21+ is Bitmain’s latest advancement in Bitcoin mining hardware, delivering an impressive 225 terahashes per second (TH/s) hashrate. Designed for the SHA-256 algorithm, it supports mining Bitcoin (BTC), Bitcoin Cash (BCH), and other SHA-256-based coins with high energy efficiency and reliability. Whether you’re scaling a mining farm or looking for optimal ROI, the S21+ is engineered to meet industrial-grade mining demands.

⚙️ Technical Specifications

• Hashrate: 225 TH/s (±10%)

• Power Consumption: 3,564–3,712 W (varies slightly by unit)

• Power Efficiency: 15.8–16.5 J/TH

• Power Input: 220–277 V AC (single-phase compatible)

• Cooling System: Dual high-speed fan air-cooling

• Noise Level: 75–76 dB

• Network Interface: Ethernet (RJ45, 10/100 Mbps)

• Dimensions: 450 mm (L) × 219 mm (W) × 293 mm (H)

• Net Weight: Approx. 22.9 kg

• Gross Weight: Approx. 25–25.7 kg

• Operating Temperature: –20 °C to +45 °C

• Humidity Range: 5% to 95% non-condensing

• Warranty: 12 months from shipping date

🔑 Key Features

• Superior Hashrate: With a massive 225 TH/s output, the S21+ is among the most powerful SHA-256 miners in the industry, designed to mine BTC and BCH more profitably.

• High Power Efficiency: Thanks to a refined architecture, the miner achieves up to 15.8 J/TH, reducing long-term energy costs and increasing profitability.

• Industrial Reliability: Designed for 24/7 uptime, this model includes a robust air-cooling system, dust-resistant casing, and wide operating temperature range.

• Plug-and-Mine Simplicity: Equipped with an intuitive control panel and standard Ethernet interface, the S21+ allows easy deployment and management.

• Single-Phase Friendly: Runs on standard 220–277 V input, removing the need for complex three-phase electrical setups.

📦 What’s in the Box

• Bitmain Antminer S21+ (225 TH/s)

• Integrated Power Supply Unit (PSU)

• User Manual and Setup Guide

• Power cable (varies by region/vendor)

🧮 Profitability & ROI

The S21+ is optimized for long-term profitability. With low energy-to-hash ratios and high hashrate, it offers rapid return on investment when paired with competitive electricity rates. Miners can typically expect faster ROI compared to older-generation units, though earnings will depend on market conditions, network difficulty, and energy costs.

✅ Use Cases

• Professional Mining Farms: Scalable and efficient, ideal for large-scale deployments.

• Home & Garage Miners: Suitable for residential or warehouse environments with proper ventilation and power setup.

• Colocation/Hosting Services: Widely supported by third-party mining hosts worldwide.

📅 Launch & Availability

The Bitmain Antminer S21+ was released in early to mid‑2025 and is now available through official Bitmain channels and authorized resellers. Units may be available for immediate shipment or preorder depending on regional supply.

Conclusion

The Bitmain Antminer S21+ (225 TH/s) represents the pinnacle of SHA-256 mining performance in 2025. With ultra-efficient power usage, a rugged build, and plug-and-play usability, it’s the go-to choice for miners looking to stay ahead in the Bitcoin mining race. Whether you’re expanding a mining facility or entering the space with serious intent, the S21+ delivers unmatched value and performance.