Name: Antminer S21
Brand: Bitmain
Availability: InStock
Rating: 4.85 (66 reviews)

Antminer S21

Antminer S21 — 200 TH/s High-Efficiency Miner

The Bitmain Antminer S21 delivers a typical 200 TH/s hashrate at around 3,500 W, achieving approximately 17.5 J/TH efficiency. It’s an air-cooled SHA-256 miner built for continuous, stable operation in professional environments. With a compact chassis, robust four-fan cooling, and industrial power compatibility, the S21 is a practical upgrade from S19-series units for better performance per watt.

Highlights

200 TH/s hashrate, ~3,500 W power, ~17.5 J/TH efficiency
Air-cooled thermal design for 24/7 uptime
Compact, rack-friendly footprint for dense deployments
Suitable for 220–277 V industrial power setups

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Factory

Bitmain

Hashrate

188TH 195TH 200TH

warranty

Full Factory

Minable coins

BTC,BCH | SHA-256

Brand

New

Antminer S21 Specifications

Technical Details

Model / Algorithm: Antminer S21 / SHA-256
Hashrate: 200 TH/s (±5%)
Power Consumption: ~3,500 W
Efficiency: ~17.5 J/TH
Input Power: 220–277 V AC, 50/60 Hz (three-phase recommended)
Cooling / Noise: Air-cooled, multi-fan; typical ASIC noise under load
Dimensions / Weight: ~400 × 195 × 290 mm; ~15–16 kg (batch dependent)
Operating Temperature: 0–45 °C with proper airflow
Networking: RJ45 Ethernet (wired)

Setup Tips

Use a stable 220–277 V line with proper grounding and surge protection.
Maintain clean intake/exhaust airflow; avoid dust and humidity.
Use wired Ethernet and a reliable pool for consistent performance.

Free Consultation

Purchase & Shipping

Condition: 100 % brand-new (factory-sealed)
Warranty: Official Bitmain manufacturer warranty
Payment Methods: Bank transfer, USDT, BTC, or USDC
Shipping: Worldwide from UAE via DHL, FedEx, or cargo (3–7 business days).
Based in Dubai, UAE — trusted international supplier
Fast global shipping to GCC, Africa and Asia
Expert consultation before and after purchase
Transparent pricing and real-time availability

⚠️ Important Notice:

Mining regulations vary by country. Please contact our support team before purchase so we can verify compliance and select the most reliable delivery method for your region.

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