Antminer D9 vs Antminer S21 Pro
Side-by-side specs, profitability, and home mining comparison.
Quick verdict
For most buyers the Antminer S21 Pro is the stronger pick — it leads on 3 of 4 head-to-head factors. The Antminer D9 runs 1,770.0 GH/s; the Antminer S21 Pro runs 234.0 TH/s.
Specs verified against the D-Central Mining Bible \xc2\xb7 June 2026
Specifications Comparison
| Antminer D9 | Specification | Antminer S21 Pro |
|---|---|---|
| 1,770.0 GH/s | Taux de hachage | 234.0 TH/s |
| 2,839 W | Consommation électrique | 3,510 W |
| 1,604.0 J/TH | Efficiency | 15.0 J/TH |
| 75 dB | Niveau de bruit | 75 dB |
| 16.1 kg | Weight | 15.0 kg |
| 9,687 BTU/hr | BTU Output | 11,976 BTU/hr |
| 8/100 | Home Mining Score | 8/100 |
| — | Release Year | — |
| X11 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer D9
Antminer S21 Pro
Based on BTC price of $64,959 and current network difficulty as of Jun 17, 2026. Actual results vary.
Verdict
Selon notre analyse multifactorielle, le Antminer S21 Pro l'emporte sur 3 des 4 facteurs (efficacité, hashrate, rapport qualité-prix). Its biggest concrete edge: 13120% more hashrate (1.8 vs 234.0 TH/s). That said, the Antminer D9 isn't beaten everywhere — it still wins consommation électrique. 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 Antminer D9 and Antminer S21 Pro actually differ, with the gap quantified:
- Antminer S21 Pro 13120% more hashrate (1.8 vs 234.0 TH/s)
- Antminer D9 19% better power draw (2,839 vs 3,510 W)
- Antminer S21 Pro 99% better efficacité (1,604.0 vs 15.0 J/TH)
- Antminer S21 Pro 7% better weight (16.1 vs 15.0 kg)
- Antminer S21 Pro 24% more heat output (9,687 vs 11,976 BTU/hr)
Cost & ROI Over Time
Hardware cost is only half the story — here is how each miner's upfront price plays out against cumulative profit at a $0.10/kWh rate.
| Antminer D9 | Metric | Antminer S21 Pro |
|---|---|---|
| $3,000 | Upfront cost (MSRP) | $6,800 |
| -$6.76 | Daily net profit | -$0.78 |
| -$5,466 | Net after 1 year | -$7,083 |
| -$7,932 | Net after 2 years | -$7,366 |
| -$10,398 | Net after 3 years | -$7,649 |
| 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
TieBoth miners are equally suitable for home use.
Best for Efficiency
Antminer S21 Pro15.0 J/TH — lower electricity cost per terahash.
Foire aux questions
Is the Antminer D9 or Antminer S21 Pro more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 Pro is more profitable at $-0.78/day compared to $-6.76/day for the Antminer D9. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Antminer D9 or the Antminer S21 Pro better for noise-sensitive spaces?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Antminer D9 vs Antminer S21 Pro: which fits a residential setup better?
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 Antminer D9 and Antminer S21 Pro on J/TH?
The Antminer D9 runs at 1,604.0 J/TH while the Antminer S21 Pro runs at 15.0 J/TH — a difference of 1,589.0 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 15.0 J/TH).