Bitmain Antminer S21 Immersion (227Th)
Bitmain Antminer S21 Immersion (227Th) vs Bitmain Antminer S9 SE (16Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 Immersion (227Th) | Specification | Bitmain Antminer S9 SE (16Th) |
|---|---|---|
| 227.0 TH/s | Taux de hachage | 16.0 TH/s |
| 3,623 W | Consommation électrique | 1,280 W |
| 16.0 J/TH | Efficiency | 80.0 J/TH |
| 75 dB | Niveau de bruit | — |
| 17.2 kg | Weight | 4,560.0 kg |
| 12,362 BTU/hr | BTU Output | 4,367 BTU/hr |
| 30/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S21 Immersion (227Th)
Bitmain Antminer S9 SE (16Th)
Based on BTC price of $78,071 and current network difficulty as of May 17, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Bitmain Antminer S21 Immersion (227Th) comes out ahead — it takes 3 of 5 (efficacité, hashrate, niveau sonore). The standout gap is 1319% more hashrate (227.0 vs 16.0 TH/s) in the Bitmain Antminer S21 Immersion (227Th)'s favour. That said, the Bitmain Antminer S9 SE (16Th) isn't beaten everywhere — it still wins consommation électrique and score de minage domestique. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Stripped to the numbers, this is how far apart the Bitmain Antminer S21 Immersion (227Th) and Bitmain Antminer S9 SE (16Th) sit on each measurable spec:
- Bitmain Antminer S21 Immersion (227Th) 1319% more hashrate (227.0 vs 16.0 TH/s)
- Bitmain Antminer S9 SE (16Th) 65% better power draw (3,623 vs 1,280 W)
- Bitmain Antminer S21 Immersion (227Th) 80% better efficacité (16.0 vs 80.0 J/TH)
- Bitmain Antminer S21 Immersion (227Th) 100% better weight (17.2 vs 4,560.0 kg)
- Bitmain Antminer S21 Immersion (227Th) 183% more heat output (12,362 vs 4,367 BTU/hr)
- Bitmain Antminer S9 SE (16Th) 3% more score de minage domestique (30.0 vs 31.0)
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 | Bitmain Antminer S9 SE (16Th) |
|---|---|---|
| $3,269 | Upfront cost (MSRP) | — |
| -$0.54 | Daily net profit | -$2.50 |
| -$3,466 | Net after 1 year | -$911 |
| -$3,663 | Net after 2 years | -$1,823 |
| -$3,860 | Net after 3 years | -$2,734 |
| Does not pay back at current rates (negative daily profit) | Payback period | — |
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
TieBoth miners produce similar daily profit.
Best for Home Mining
Bitmain Antminer S9 SE (16Th)Score: 31/100. 0 dB noise level.
Best for Efficiency
Bitmain Antminer S21 Immersion (227Th)16.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S21 Immersion (227Th) or Bitmain Antminer S9 SE (16Th) more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 Immersion (227Th) is more profitable at $-0.54/day compared to $-2.50/day for the Bitmain Antminer S9 SE (16Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S21 Immersion (227Th) or Bitmain Antminer S9 SE (16Th)?
The Bitmain Antminer S21 Immersion (227Th) is quieter at 75 dB compared to the Bitmain Antminer S9 SE (16Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer S21 Immersion (227Th) vs Bitmain Antminer S9 SE (16Th): which fits a residential setup better?
The Bitmain Antminer S9 SE (16Th) scores 31/100 on our Home Mining Score (vs 30/100 for the Bitmain Antminer S21 Immersion (227Th)). 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 Immersion (227Th) and Bitmain Antminer S9 SE (16Th)?
The Bitmain Antminer S21 Immersion (227Th) runs at 16.0 J/TH while the Bitmain Antminer S9 SE (16Th) runs at 80.0 J/TH — a difference of 64.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 80% better efficacité (16.0 vs 80.0 J/TH).
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