Antminer S21 Pro – 245 TH/s (Batch October 2025)

Antminer S21 Pro – 245 TH/s: High-Efficiency SHA-256 ASIC Miner for Bitcoin Mining
The Antminer S21 Pro is a top-tier ASIC miner built for the SHA-256 algorithm, delivering a powerful 245 TH/s hashrate for mining Bitcoin (BTC) and other SHA-256-based cryptocurrencies like Bitcoin Cash (BCH). With 15 J/TH efficiency and 3675W 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 April to August 2025 data, daily earnings range from $10 to $15 USD, averaging $12.81 with $0.04/kWh rates. The Antminer S21 Pro achieves ROI in 8-14 months, depending on Bitcoin prices and energy costs, with $12.81 daily profitability.
Technical Specifications
Specification
Details
Vendor
Antminer
Brand
Bitmain
Model
S21 Pro
Hash Rate
245 TH/s
Algorithm
sha-256
Supported Coins
Bitcoin (BTC)
Power Consumption
3675 W
Energy Efficiency
15 J/TH
Cooling System
Air-cooling
Power Cord
Shipped according to client’s destination
Dimensions
450x220x300 mm
Noise Level
75 dB
Operating Temperature
5°C to 45°C
Network Interface
Ethernet
Release Date
August 2025
 
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 🇺🇸
$0.065 / kWh
20.23 month(s)
Nigeria 🇳🇬
$0.047 / kWh
17.4 month(s)
Ethiopia 🇪🇹
$0.054 / kWh
18.58 month(s)
Dubai 🇦🇪
$0.059 / kWh
18.84 month(s)
Finland 🇫🇮
$0.069 / kWh
20.85 month(s)
Norway 🇳🇴
$0.064 / kWh
21.85 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 245 TH/s and 15 J/TH efficiency for lower energy costs.
Advanced Chip Technology: Uses top chips for strong Bitcoin hash power.
Compact Design: Fits at 450x220x300 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 Pro?
The Antminer S21 Pro shines in SHA-256 mining with 245 TH/s hashrate and 15 J/TH efficiency, perfect for all miners. Its compact design and simple software suit any scale, while $0.04/kWh hosting boosts profitability. With solid security, it’s ideal for maximizing 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.
Pre-order for October 1, 2025, and start mining Bitcoin efficiently—shipped or hosted. Contact us for bulk deals.