Antminer D9 vs Bitmain T21 (190TH)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer D9 | Specification | Bitmain T21 (190TH) |
|---|---|---|
| 1,770.0 GH/s | Hashrate | 190.0 TH/s |
| 2,839 W | Power Consumption | 3,610 W |
| 1,604.0 J/TH | Efficiency | 19.0 J/TH |
| 75 dB | Noise Level | 76 dB |
| 16.1 kg | Weight | 16.4 kg |
| 9,687 BTU/hr | BTU Output | 12,317 BTU/hr |
| 36/100 | Home Mining Score | 23/100 |
| — | Release Year | — |
| X11 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer D9
Bitmain T21 (190TH)
Based on BTC price of $79,032 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain T21 (190TH) wins on 3 of 6 factors (efficiency, hashrate, price-performance). The standout gap is 10634% more hashrate (1.8 vs 190.0 TH/s) in the Bitmain T21 (190TH)'s favour. The Antminer D9 claws back ground on power consumption and home mining score and noise level. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
The Antminer D9 and Bitmain T21 (190TH) diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain T21 (190TH) 10634% more hashrate (1.8 vs 190.0 TH/s)
- Antminer D9 21% better power draw (2,839 vs 3,610 W)
- Bitmain T21 (190TH) 99% better efficiency (1,604.0 vs 19.0 J/TH)
- Antminer D9 1% better noise (75.0 vs 76.0 dB)
- Antminer D9 2% better weight (16.1 vs 16.4 kg)
- Bitmain T21 (190TH) 27% more heat output (9,687 vs 12,317 BTU/hr)
- Antminer D9 57% more home mining score (36.0 vs 23.0)
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 T21 (190TH) |
|---|---|---|
| $3,000 | Upfront cost (MSRP) | $1,700 |
| -$6.75 | Daily net profit | -$1.75 |
| -$5,463 | Net after 1 year | -$2,340 |
| -$7,927 | Net after 2 years | -$2,980 |
| -$10,390 | Net after 3 years | -$3,620 |
| 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 T21 (190TH)19.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer D9 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 $-1.75/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.
Is the Antminer D9 or the Bitmain T21 (190TH) better for noise-sensitive spaces?
The Antminer D9 is quieter at 75 dB compared to the Bitmain T21 (190TH) at 76 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 T21 (190TH)?
The Antminer D9 scores 36/100 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.
What is the efficiency difference between Antminer D9 and Bitmain T21 (190TH)?
The Antminer D9 runs at 1,604.0 J/TH while the Bitmain T21 (190TH) runs at 19.0 J/TH — a difference of 1,585.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 99% better efficiency (1,604.0 vs 19.0 J/TH).