Bitmain Antminer S21 Immersion (301Th)
Antminer D9 vs Bitmain Antminer S21 Immersion (301Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer D9 | Specification | Bitmain Antminer S21 Immersion (301Th) |
|---|---|---|
| 1,770.0 GH/s | Taux de hachage | 301.0 TH/s |
| 2,839 W | Consommation électrique | 5,569 W |
| 1,604.0 J/TH | Efficiency | 18.5 J/TH |
| 75 dB | Niveau de bruit | 50 dB |
| 16.1 kg | Weight | 17.2 kg |
| 9,687 BTU/hr | BTU Output | 19,001 BTU/hr |
| 36/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| X11 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer D9
Bitmain Antminer S21 Immersion (301Th)
Based on BTC price of $78,185 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitmain Antminer S21 Immersion (301Th), which leads on 5 of 6 weighted factors (efficacité, hashrate, score de minage domestique, niveau sonore, rapport qualité-prix). The standout gap is 16906% more hashrate (1.8 vs 301.0 TH/s) in the Bitmain Antminer S21 Immersion (301Th)'s favour. That said, the Antminer D9 isn't beaten everywhere — it still wins consommation électrique. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
The Antminer D9 and Bitmain Antminer S21 Immersion (301Th) diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer S21 Immersion (301Th) 16906% more hashrate (1.8 vs 301.0 TH/s)
- Antminer D9 49% better power draw (2,839 vs 5,569 W)
- Bitmain Antminer S21 Immersion (301Th) 99% better efficacité (1,604.0 vs 18.5 J/TH)
- Bitmain Antminer S21 Immersion (301Th) 33% better noise (75.0 vs 50.0 dB)
- Antminer D9 6% better weight (16.1 vs 17.2 kg)
- Bitmain Antminer S21 Immersion (301Th) 96% more heat output (9,687 vs 19,001 BTU/hr)
- Bitmain Antminer S21 Immersion (301Th) 22% more score de minage domestique (36.0 vs 44.0)
Cost & ROI Over Time
Sticker price versus what the miner actually earns back: the table below projects cumulative net profit at a $0.10/kWh electricity rate.
| Antminer D9 | Metric | Bitmain Antminer S21 Immersion (301Th) |
|---|---|---|
| $3,000 | Upfront cost (MSRP) | $3,333 |
| -$6.75 | Daily net profit | -$2.54 |
| -$5,464 | Net after 1 year | -$4,258 |
| -$7,927 | Net after 2 years | -$5,184 |
| -$10,391 | Net after 3 years | -$6,109 |
| 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
Bitmain Antminer S21 Immersion (301Th)Score: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer S21 Immersion (301Th)18.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer D9 or Bitmain Antminer S21 Immersion (301Th) more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 Immersion (301Th) is more profitable at $-2.54/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 (301Th): which runs at a lower noise level?
The Bitmain Antminer S21 Immersion (301Th) is quieter at 50 dB compared to the Antminer D9 at 75 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Antminer D9 or the Bitmain Antminer S21 Immersion (301Th)?
The Bitmain Antminer S21 Immersion (301Th) scores 44/100 on our Home Mining Score (vs 36/100 for the Antminer D9). 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 (301Th) on J/TH?
The Antminer D9 runs at 1,604.0 J/TH while the Bitmain Antminer S21 Immersion (301Th) runs at 18.5 J/TH — a difference of 1,585.5 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 18.5 J/TH).