Profitability Overview
As of July 2025, the Bitmain Antminer S21 Pro (234TH/s) generates $9.01 daily** ($270.3 monthly, $3,288.65 yearly**)**, assuming an electricity cost of **$0.1/KWh. This positions it as one of the most efficient ASIC miners for SHA-256 algorithms.
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Key Specifications
Hashrate & Algorithm
- Hashrate: 234TH/s
- Algorithm: SHA-256 (optimized for Bitcoin, Bitcoin Cash, and similar cryptocurrencies).
Power Consumption
- Daily Usage: 3,510W (equals $8.42/day in electricity costs).
- Efficiency: 15 J/Th (industry-leading for high-throughput mining).
Mineable Cryptocurrencies
- Bitcoin (BTC)
- Bitcoin Cash (BCH)
- NiceHash (AB)
- Other SHA-256-compatible coins.
Cost-Benefit Breakdown
Daily Metrics
| Metric | Value |
|----------------------|--------------|
| Daily Revenue | $17.43 |
| Electricity Cost | $8.42 |
| Net Profit | $9.01 |
Long-Term Projections
- Monthly Net Profit: $270.3
- Yearly Net Profit: $3,288.65
FAQs
1. Is the Antminer S21 Pro worth the investment in 2025?
Yes, with a 15 J/Th efficiency and high hashrate, it remains competitive against newer models, especially in regions with <$0.12/KWh electricity rates.
2. How does it compare to other Antminer models?
The S21 Pro outperforms predecessors like the S19 series in efficiency but requires ~3,510W of power.
3. Can I mine altcoins with this device?
Only SHA-256-based coins (e.g., BTC, BCH). For other algorithms, consider GPUs or alternative ASICs.
4. What’s the break-even period?
Approximately 12–18 months, depending on Bitcoin’s price and electricity costs.
5. Where can I buy the Antminer S21 Pro?
Purchase directly from Bitmain’s official store or authorized resellers.
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Conclusion
The Bitmain Antminer S21 Pro (234TH/s) balances high profitability and energy efficiency, making it ideal for serious miners. Always factor in local electricity rates and Bitcoin market trends before investing.
For optimal ROI, pair with low-cost power sources and regular hardware maintenance.
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