The Bitmain Antminer S21 represents the cutting edge of Bitcoin mining technology. At the recent World Digital Summit in Hong Kong, two units of this advanced mining hardware were showcased, highlighting Bitmain's commitment to pushing the boundaries of mining efficiency. This guide provides a detailed analysis of the Antminer S21's profitability, specifications, and market position.
Antminer S21 Series Overview
The S21 series offers two distinct models:
- Antminer S21 200TH (Air-cooled)
- Antminer S21 355TH (Hydro-cooled)
Bitmain plans significant production volumes, targeting 50,000-100,000 units monthly based on market demand. The series introduces innovative cooling solutions that set new benchmarks for efficiency in Bitcoin mining hardware.
Performance Metrics
Hashrate:
- Air-cooled: 200 TH/s
- Hydro-cooled: 330 TH/s
Efficiency:
- Air-cooled: 17.5 J/TH
- Hydro-cooled: 16 J/TH (industry-leading)
Pricing:
- Launch price: $14/TH (minimum order 1.2 EH/s)
- Phase 2 price: $19.6/TH
👉 Explore Antminer S21 pricing details
Profitability Analysis
Using standard parameters ($0.06/kWh electricity, $74.79 hashprice as of October 25):
Air-Cooled Model
| Period | Income | Electricity Cost | Profit |
|---|---|---|---|
| Daily | $12.47 | $5.04 | $7.43 |
| Monthly | $379.43 | $153.30 | $226.13 |
| Annual | $4,553.16 | $1,839.60 | $2,713.56 |
Hydro-Cooled Model
| Period | Income | Electricity Cost | Profit |
|---|---|---|---|
| Daily | $25.06 | $7.72 | $17.34 |
| Monthly | $762.13 | $234.77 | $527.36 |
| Annual | $9,145.56 | $2,817.22 | $6,328.34 |
Technical Specifications
Air-Cooled Model
- Efficiency: 17.50 J/TH
- Dimensions: 195×290×400mm
- Weight: 18kg
- Power Consumption: 3500W
- Voltage: 12V
Hydro-Cooled Model
- Efficiency: 16.00 J/TH
- Power Consumption: 5360W
- Hashrate: 335 TH/s
Market Availability
While Bitmain primarily accepts bulk pre-orders, secondary markets offer smaller quantity purchases. Current estimates suggest delivery windows between January-June 2024.
👉 Learn about purchasing options
FAQ Section
Q: How does the S21 compare to previous Antminer models?
A: The S21 offers 15-20% better efficiency than the S19 XP, with significantly higher hashrates.
Q: What's the break-even point for S21 hydro models?
A: At current Bitcoin prices and $0.06/kWh electricity, hydro models break even in approximately 14 months.
Q: Can home miners operate the S21 hydro model?
A: The hydro model requires specialized cooling infrastructure typically only available in professional mining facilities.
Q: How does difficulty adjustment affect S21 profitability?
A: While difficulty increases gradually reduce earnings, the S21's superior efficiency provides longer-term viability than less efficient models.
Conclusion
The Antminer S21 series represents a significant advancement in Bitcoin mining technology, offering unparalleled efficiency and performance. For operations with access to affordable electricity and proper cooling infrastructure, these models present compelling investment opportunities in the current mining landscape.