Bitmain Antminer S9 Hydro (18Th) vs Bitmain T21 (190TH)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S9 Hydro (18Th) | Specification | Bitmain T21 (190TH) |
|---|---|---|
| 18.0 TH/s | Taux de hachage | 190.0 TH/s |
| 1,728 W | Consommation électrique | 3,610 W |
| 96.0 J/TH | Efficiency | 19.0 J/TH |
| — | Niveau de bruit | 76 dB |
| 5,150.0 kg | Weight | 16.4 kg |
| 5,896 BTU/hr | BTU Output | 12,317 BTU/hr |
| 28/100 | Home Mining Score | 23/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S9 Hydro (18Th)
Bitmain T21 (190TH)
Based on BTC price of $78,208 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Bitmain T21 (190TH) edges it: 3 of 5 factors go its way (efficacité, hashrate, niveau sonore). Where it pulls away hardest is 956% more hashrate (18.0 vs 190.0 TH/s). That said, the Bitmain Antminer S9 Hydro (18Th) 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 Bitmain Antminer S9 Hydro (18Th) and Bitmain T21 (190TH) diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain T21 (190TH) 956% more hashrate (18.0 vs 190.0 TH/s)
- Bitmain Antminer S9 Hydro (18Th) 52% better power draw (1,728 vs 3,610 W)
- Bitmain T21 (190TH) 80% better efficacité (96.0 vs 19.0 J/TH)
- Bitmain T21 (190TH) 100% better weight (5,150.0 vs 16.4 kg)
- Bitmain T21 (190TH) 109% more heat output (5,896 vs 12,317 BTU/hr)
- Bitmain Antminer S9 Hydro (18Th) 22% more score de minage domestique (28.0 vs 23.0)
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.
| Bitmain Antminer S9 Hydro (18Th) | Metric | Bitmain T21 (190TH) |
|---|---|---|
| — | Upfront cost (MSRP) | $1,700 |
| -$3.50 | Daily net profit | -$1.83 |
| -$1,277 | Net after 1 year | -$2,366 |
| -$2,555 | Net after 2 years | -$3,033 |
| -$3,832 | Net after 3 years | -$3,699 |
| — | 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 S9 Hydro (18Th)Score: 28/100. 0 dB noise level.
Best for Efficiency
Bitmain T21 (190TH)19.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S9 Hydro (18Th) or Bitmain T21 (190TH) more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain T21 (190TH) is more profitable at $-1.83/day compared to $-3.50/day for the Bitmain Antminer S9 Hydro (18Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer S9 Hydro (18Th) or the Bitmain T21 (190TH) better for noise-sensitive spaces?
The Bitmain T21 (190TH) is quieter at 76 dB compared to the Bitmain Antminer S9 Hydro (18Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer S9 Hydro (18Th) vs Bitmain T21 (190TH): which fits a residential setup better?
The Bitmain Antminer S9 Hydro (18Th) scores 28/100 on our Home Mining Score (vs 23/100 for the Bitmain T21 (190TH)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer S9 Hydro (18Th) vs Bitmain T21 (190TH): how much does the efficiency gap matter?
The Bitmain Antminer S9 Hydro (18Th) runs at 96.0 J/TH while the Bitmain T21 (190TH) runs at 19.0 J/TH — a difference of 77.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 80% better efficacité (96.0 vs 19.0 J/TH).