Bitmain Antminer S21 Immersion (227Th)
Antminer D9 vs Bitmain Antminer S21 Immersion (227Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer D9 | Specification | Bitmain Antminer S21 Immersion (227Th) |
|---|---|---|
| 1,770.0 GH/s | Taux de hachage | 227.0 TH/s |
| 2,839 W | Consommation électrique | 3,623 W |
| 1,604.0 J/TH | Efficiency | 16.0 J/TH |
| 75 dB | Niveau de bruit | 75 dB |
| 16.1 kg | Weight | 17.2 kg |
| 9,687 BTU/hr | BTU Output | 12,362 BTU/hr |
| 36/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| X11 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer D9
Bitmain Antminer S21 Immersion (227Th)
Based on BTC price of $73,558 and current network difficulty as of May 30, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Bitmain Antminer S21 Immersion (227Th) edges it: 3 of 5 factors go its way (efficacité, hashrate, rapport qualité-prix). The standout gap is 12725% more hashrate (1.8 vs 227.0 TH/s) in the Bitmain Antminer S21 Immersion (227Th)'s favour. That said, the Antminer D9 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
The Antminer D9 and Bitmain Antminer S21 Immersion (227Th) diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer S21 Immersion (227Th) 12725% more hashrate (1.8 vs 227.0 TH/s)
- Antminer D9 22% better power draw (2,839 vs 3,623 W)
- Bitmain Antminer S21 Immersion (227Th) 99% better efficacité (1,604.0 vs 16.0 J/TH)
- Antminer D9 6% better weight (16.1 vs 17.2 kg)
- Bitmain Antminer S21 Immersion (227Th) 28% more heat output (9,687 vs 12,362 BTU/hr)
- Antminer D9 20% more score de minage domestique (36.0 vs 30.0)
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.
| Antminer D9 | Metric | Bitmain Antminer S21 Immersion (227Th) |
|---|---|---|
| $3,000 | Upfront cost (MSRP) | $3,269 |
| -$6.75 | Daily net profit | -$1.14 |
| -$5,465 | Net after 1 year | -$3,685 |
| -$7,931 | Net after 2 years | -$4,102 |
| -$10,396 | Net after 3 years | -$4,518 |
| Does not pay back at current rates (negative daily profit) | Payback period | Does not pay back at current rates (negative daily profit) |
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
Antminer D9Score: 36/100. 75 dB noise level.
Best for Efficiency
Bitmain Antminer S21 Immersion (227Th)16.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Antminer D9 or the Bitmain Antminer S21 Immersion (227Th)?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 Immersion (227Th) is more profitable at $-1.14/day compared to $-6.75/day for the Antminer D9. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer D9 vs Bitmain Antminer S21 Immersion (227Th): which runs at a lower noise level?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Antminer D9 or Bitmain Antminer S21 Immersion (227Th)?
The Antminer D9 scores 36/100 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.
How far apart are the Antminer D9 and Bitmain Antminer S21 Immersion (227Th) on J/TH?
The Antminer D9 runs at 1,604.0 J/TH while the Bitmain Antminer S21 Immersion (227Th) runs at 16.0 J/TH — a difference of 1,588.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 99% better efficacité (1,604.0 vs 16.0 J/TH).