Introduction to the Antminer S21
The Bitmain Antminer S21 is the latest addition to Bitmain’s lineup of high-performance Bitcoin miners, unveiled at the 2023 World Digital Mining Summit in Hong Kong. Following the success of the S19 series, the S21 introduces advanced air-cooling technology to optimize mining efficiency.
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Key Features:
- Air-cooled design for heat management
- 200 Th/s hash rate for superior performance
- 3500W power consumption with 17.5 J/Th efficiency
- SHA-256 algorithm for Bitcoin and compatible coins
Detailed Specifications
| Category | Details |
|---|---|
| Manufacturer | Bitmain |
| Model | Antminer S21 (Air-cooled) |
| Hash Rate | 200 Th/s |
| Power Consumption | 3500W |
| Efficiency | 17.5 J/Th |
| Noise Level | 75 dB |
| Dimensions (L×W×H) | 400 × 195 × 290 mm |
| Weight | 15.4 kg (net) |
| Operating Conditions | 0–45°C, 10–90% humidity |
Note: The first batch ships in January 2024.
Compatible Coins and Algorithm
SHA-256 Coins:
- Bitcoin (BTC)
- Bitcoin Cash (BCH)
- eCash (XEC)
- DigiByte (DGB)
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Profitability Analysis
Factors Affecting Profitability:
- Bitcoin’s Market Price
- Electricity Costs
- Mining Pool Fees
Example Calculation (2024 Projections):
- Hash Rate: 200 Th/s
- Power Cost: $0.10/kWh
- Daily Revenue: ~$120 (varies with BTC price)
Tools:
- Use ASIC Miner Value for real-time estimates.
Maintenance Tips
- Regular Cleaning: Prevent dust buildup.
- Firmware Updates: Check Bitmain’s official site.
- Connection Checks: Ensure stable power/internet.
- Avoid Overclocking: Prolongs hardware lifespan.
Where to Buy
- Primary Source: Bitmain’s Preorders (bulk orders only).
- Secondary Retailers: ASIC Marketplace (smaller batches).
Price Note: Promotional rates apply for early batches.
FAQs
1. What’s the Antminer S21’s efficiency?
- 17.5 J/Th, making it one of the most efficient SHA-256 miners.
2. Can it mine coins other than Bitcoin?
- Yes, including Bitcoin Cash and eCash.
3. How noisy is the S21?
- 75 dB—similar to industrial-grade miners.
4. When will it ship?
- First batch expected January–June 2024.
5. Is it worth upgrading from the S19?
- Yes, for higher hash rates and improved efficiency.
Conclusion
The Antminer S21 combines cutting-edge technology with cost-effective mining, ideal for serious miners. Stay updated with Bitmain’s releases for optimal deployment.