Bitmain Antminer S21 XP+ Hyd (500Th) vs Canaan AvalonMiner 821
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 XP+ Hyd (500Th) | Specification | Canaan AvalonMiner 821 |
|---|---|---|
| 500.0 TH/s | Hashrate | 11.5 TH/s |
| 5,500 W | Power Consumption | 1,200 W |
| 11.0 J/TH | Efficiency | 104.4 J/TH |
| 50 dB | Noise Level | — |
| 13.8 kg | Weight | 4,700.0 kg |
| 18,766 BTU/hr | BTU Output | 4,094 BTU/hr |
| 44/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Bitmain Antminer S21 XP+ Hyd (500Th)
Canaan AvalonMiner 821
Based on BTC price of $66,642 and current network difficulty as of Mar 29, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer S21 XP+ Hyd (500Th) wins on 5 of 6 factors (efficiency, hashrate, home mining score, noise level, price-performance). The Canaan AvalonMiner 821 holds the edge in power consumption. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Best For...
Best for Profitability
Bitmain Antminer S21 XP+ Hyd (500Th)$4.98/day higher profit at current rates.
Best for Home Mining
Bitmain Antminer S21 XP+ Hyd (500Th)Score: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer S21 XP+ Hyd (500Th)11.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S21 XP+ Hyd (500Th) or Canaan AvalonMiner 821 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 XP+ Hyd (500Th) is more profitable at $2.46/day compared to $-2.52/day for the Canaan AvalonMiner 821. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S21 XP+ Hyd (500Th) or Canaan AvalonMiner 821?
The Bitmain Antminer S21 XP+ Hyd (500Th) is quieter at 50 dB compared to the Canaan AvalonMiner 821 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer S21 XP+ Hyd (500Th) or Canaan AvalonMiner 821?
The Bitmain Antminer S21 XP+ Hyd (500Th) scores 44/100 on our Home Mining Score (vs 31/100 for the Canaan AvalonMiner 821). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
What is the efficiency difference between Bitmain Antminer S21 XP+ Hyd (500Th) and Canaan AvalonMiner 821?
The Bitmain Antminer S21 XP+ Hyd (500Th) runs at 11.0 J/TH while the Canaan AvalonMiner 821 runs at 104.4 J/TH — a difference of 93.4 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.
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