Bitmain Antminer S21 Immersion (227Th)
Bitmain Antminer S21 Immersion (227Th) vs Canaan Avalon A16
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 Immersion (227Th) | Specification | Canaan Avalon A16 |
|---|---|---|
| 227.0 TH/s | Taux de hachage | 282.0 TH/s |
| 3,623 W | Consommation électrique | 3,900 W |
| 16.0 J/TH | Efficiency | 13.8 J/TH |
| 75 dB | Niveau de bruit | 75 dB |
| 17.2 kg | Weight | 14.9 kg |
| 12,362 BTU/hr | BTU Output | 13,307 BTU/hr |
| 30/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Bitmain Antminer S21 Immersion (227Th)
Canaan Avalon A16
Based on BTC price of $78,190 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Canaan Avalon A16, which leads on 2 of 4 weighted factors (efficacité, hashrate). Where it pulls away hardest is 24% more hashrate (227 vs 282 TH/s). That said, the Bitmain Antminer S21 Immersion (227Th) isn't beaten everywhere — it still wins consommation électrique and rapport qualité-prix. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Here is every spec where the Bitmain Antminer S21 Immersion (227Th) and Canaan Avalon A16 actually differ, with the gap quantified:
- Canaan Avalon A16 24% more hashrate (227 vs 282 TH/s)
- Bitmain Antminer S21 Immersion (227Th) 7% better power draw (3,623 vs 3,900 W)
- Canaan Avalon A16 13% better efficacité (16.0 vs 13.8 J/TH)
- Canaan Avalon A16 13% better weight (17.2 vs 14.9 kg)
- Canaan Avalon A16 8% more heat output (12,362 vs 13,307 BTU/hr)
Cost & ROI Over Time
A miner pays for itself in profit, not specs. These projections track upfront cost against one, two and three years of net earnings at $0.10/kWh.
| Bitmain Antminer S21 Immersion (227Th) | Metric | Canaan Avalon A16 |
|---|---|---|
| $3,269 | Upfront cost (MSRP) | $4,202 |
| -$0.53 | Daily net profit | $0.79 |
| -$3,461 | Net after 1 year | -$3,915 |
| -$3,654 | Net after 2 years | -$3,628 |
| -$3,846 | Net after 3 years | -$3,340 |
| Does not pay back at current rates (negative daily profit) | Payback period | Takes ~14.6 years to pay back at current rates |
Projections assume continuous operation, a flat $0.10/kWh rate, and no hardware degradation, pool fees, or BTC price change. Real-world ROI varies.
Best For...
Best for Profitability
Canaan Avalon A16$1.31/day higher profit at current rates.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
Canaan Avalon A1613.8 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S21 Immersion (227Th) or Canaan Avalon A16 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Canaan Avalon A16 is more profitable at $0.79/day compared to $-0.53/day for the Bitmain Antminer S21 Immersion (227Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer S21 Immersion (227Th) or the Canaan Avalon A16 better for noise-sensitive spaces?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Bitmain Antminer S21 Immersion (227Th) or Canaan Avalon A16?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
How far apart are the Bitmain Antminer S21 Immersion (227Th) and Canaan Avalon A16 on J/TH?
The Bitmain Antminer S21 Immersion (227Th) runs at 16.0 J/TH while the Canaan Avalon A16 runs at 13.8 J/TH — a difference of 2.1 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 13% better efficacité (16.0 vs 13.8 J/TH).
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