Antminer S21 Series
Professional Bitcoin mining hardware engineered for post-halving profitability. With Bitcoin's block reward halved to 3.125 BTC in April 2024 and network difficulty reaching all-time highs near 127 trillion, only the most efficient miners can maintain sustainable operations. The S21 series delivers the sub-20 J/TH efficiency required to compete in today's challenging market conditions.
Choose Your Antminer S21 Model
Antminer S21
| Hashrate: | 200 TH/s |
| Power: | 3,550W ±5% |
| Efficiency: | 17.5 J/TH |
| Cooling: | Air-cooled |
| Dimensions: | 400×195.5×290mm |
| Weight: | 15.4kg |
Antminer S21 Pro
| Hashrate: | 234 TH/s |
| Power: | 3,510W ±5% |
| Efficiency: | 15.0 J/TH |
| Cooling: | Air-cooled |
| Dimensions: | 400×195.5×290mm |
| Weight: | 15.4kg |
Antminer S21 XP
| Hashrate: | 270 TH/s |
| Power: | 3,645W ±5% |
| Efficiency: | 13.5 J/TH |
| Cooling: | Air-cooled |
| Dimensions: | 449×219×293mm |
| Weight: | 18.7kg |
Antminer S21 Hydro
| Hashrate: | 335 TH/s |
| Power: | 5,360W ±5% |
| Efficiency: | 16.0 J/TH |
| Cooling: | Liquid-cooled |
| Noise: | 50dB (65% quieter) |
| Weight: | 17.2kg |
Advanced Technology Features
5nm ASIC Technology
Advanced 5nm chip design delivers maximum hashrate with minimal power consumption for superior efficiency.
Thermal Management
Individual chip temperature sensors with automatic underclocking protection prevent overheating and extend lifespan.
Enhanced Power Supply
Upgraded PSU with 500V capacitors provides stable power delivery and improved reliability under load.
Firmware Compatibility
Supports third-party firmware for advanced optimization and custom mining strategies.
Extended Temperature Range
Operates reliably from 0-45°C, 5°C higher than previous generations for improved deployment flexibility.
Secure Boot
Built-in security features protect against unauthorized firmware modifications and ensure operational integrity.
S21 Series Comparison
| Model | Hashrate | Power | Efficiency | Cooling | Pricing | ROI Analysis |
|---|---|---|---|---|---|---|
| S21 | 200 TH/s | 3,550W | 17.5 J/TH | Air | Contact for Pricing | Contact for ROI Analysis |
| S21 Pro | 234 TH/s | 3,510W | 15.0 J/TH | Air | Contact for Pricing | Contact for ROI Analysis |
| S21 XP | 270 TH/s | 3,645W | 13.5 J/TH | Air | Contact for Pricing | Contact for ROI Analysis |
| S21 Hydro | 335 TH/s | 5,360W | 16.0 J/TH | Liquid | Contact for Pricing | Contact for ROI Analysis |
*Daily profit calculated at €0.10/kWh electricity cost and current network difficulty
ROI Calculator
Calculate Your Mining Profitability
Estimated Returns:
Daily Profit: €8.11
Monthly Profit: €243.30
ROI Period: 24-30 months
*Estimates based on current market conditions. Actual results may vary.
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