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Description
Antminer S21 (AIR) - 151 TH/sAntminer S21 (AIR) 151 TH s: High Efficiency SHA 256 ASIC Miner for Bitcoin Mining The Antminer S21 (AIR) is a top tier ASIC miner built for the SHA 256 algorithm, delivering a powerful 151 TH s hashrate for mining Bitcoin (BTC) and other SHA 256 based cryptocurrencies. With 17. 50 J TH efficiency and 2681W power consumption, it offers a great balance of performance and cost, ideal for small and large mining operations. Its advanced chips ensure high
Antminer S21 (AIR) - 151 TH/s: High-Efficiency SHA-256 ASIC Miner for Bitcoin Mining
The Antminer S21 (AIR) is a top-tier ASIC miner built for the SHA-256 algorithm, delivering a powerful 151 TH/s hashrate for mining Bitcoin (BTC) and other SHA-256-based cryptocurrencies. With 17.50 J/TH efficiency and 2681W power consumption, it offers a great balance of performance and cost, ideal for small and large mining operations. Its advanced chips ensure high performance with low environmental impact, and its compact design fits easily into any setup. Choose shipping or hosting at $0.04/kWh electricity rates to boost profitability.
Historical and Projected Profitability
Profitability Chart: Based on current market data, daily earnings range from $3 to $5 USD, averaging $3.52 with $0.04/kWh rates. The Antminer S21 (AIR) achieves ROI in 8-11 months, depending on Bitcoin prices and energy costs.
Technical Specifications
| Specification | Details |
|---|---|
| Vendor | Bitmain |
| Brand | Antminer |
| Model | S21 (AIR) |
| Hash Rate | 151 TH/s |
| Algorithm | SHA-256 |
| Supported Coins | Bitcoin (BTC) |
| Power Consumption | 2681 W |
| Energy Efficiency | 17.50 J/TH |
| Cooling System | Air cooling (2 fans) |
| Power Cord | Shipped according to client's destination |
| Dimensions | 400 x 195 x 290 mm |
| Noise Level | 75 dB |
| Operating Temperature | 5°C to 40°C |
| Network Interface | Ethernet |
| Release Date | February 2024 |
Profitability and ROI Insights
Use our Profitability Calculator to estimate earnings based on Bitcoin prices, $0.04/kWh hosting rates, and network difficulty.
Flexible Deployment Options: Shipping or Hosting
Shipping: Direct delivery from Shenzhen via DHL, UPS, FedEx, or TNT in 5-7 days. Secure packaging with tracking; costs vary by location (e.g., 10% tax in USA from April 2025). Bulk orders over $500,000 get custom pricing.
Hosting: Deploy in USA, Dubai, Norway, Finland, Ethiopia or Nigeria with $0.04/kWh rates. Enjoy hands-off operation with 24/7 maintenance.
| Location | Electricity Rate | ROI |
|---|---|---|
| USA | $0.059 / kWh | 10.1 month(s) |
| Nigeria | $0.048 / kWh | 9.2 month(s) |
| Ethiopia | $0.053 / kWh | 9.6 month(s) |
| Dubai | $0.054 / kWh | 9.7 month(s) |
| Finland | $0.061 / kWh | 10.3 month(s) |
| Norway | $0.064 / kWh | 10.7 month(s) |
Hosting Benefits
7-Year Full Warranty
95%+ Uptime
Deployment in 1-7 Days
Exchange Services for FIAT and cryptocurrencies
0% Mining Fee – Keep all coins Hosting reduces infrastructure needs and maximizes profits with low-cost energy.
Key Features and Benefits
High Hashrate and Efficiency: Offers 151 TH/s and 17.50 J/TH efficiency for lower energy costs.
Advanced Chip Technology: Next-gen Bitmain chips delivering extreme Bitcoin hash power.
Compact Design: Fits at 400 x 195 x 290 mm with durable build.
Enhanced Security: Protects against threats with built-in safeguards.
Easy Monitoring: Tracks hashrate, power, and temperature with adjustable settings.
Versatile Algorithm: Supports SHA-256 and multi-coin mining.
Stable Connectivity: Ensures reliable remote management via Ethernet.
Why Choose the Antminer S21 (AIR)?
The Antminer S21 (AIR) dominates SHA-256 mining with 151 TH/s hashrate and elite 17.50 J/TH efficiency. Proven Bitmain reliability and strong cooling make it perfect for any scale, while $0.04/kWh hosting maximizes profitability. Ideal for serious miners looking for long-term Bitcoin earnings.
Warranty, Shipping, and Support
Warranty: 7 years for hosted, 12 months for shipped (voided by misuse).
Shipping: 5-7 day global delivery with tracking; bulk orders get quotes.
Payment Options: Accepts cryptocurrency or wire transfer; hosting costs deduct from profits.
Customer Support: 24/7 assistance for setup, troubleshooting, and more.
In stock – ships immediately! Start mining Bitcoin today — shipped or hosted. Contact us for bulk pricing.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy