Antminer D9 vs Antminer S9i
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer D9 | Specification | Antminer S9i |
|---|---|---|
| 1,770.0 GH/s | Hashrate | 14.0 TH/s |
| 2,839 W | Power Consumption | 1,320 W |
| 1,604.0 J/TH | Efficiency | 94.3 J/TH |
| 75 dB | Noise Level | 76 dB |
| 16.1 kg | Weight | 4.2 kg |
| 9,687 BTU/hr | BTU Output | 4,504 BTU/hr |
| 36/100 | Home Mining Score | 83/100 |
| — | Release Year | — |
| X11 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer D9
Antminer S9i
Based on BTC price of $77,900 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Antminer S9i edges it: 4 of 5 factors go its way (efficiency, hashrate, power consumption, home mining score). The standout gap is 94% better efficiency (1,604.0 vs 94.3 J/TH) in the Antminer S9i's favour. The Antminer D9 claws back ground on 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 Antminer S9i diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Antminer S9i 691% more hashrate (1.8 vs 14.0 TH/s)
- Antminer S9i 54% better power draw (2,839 vs 1,320 W)
- Antminer S9i 94% better efficiency (1,604.0 vs 94.3 J/TH)
- Antminer D9 1% better noise (75.0 vs 76.0 dB)
- Antminer S9i 74% better weight (16.1 vs 4.2 kg)
- Antminer D9 115% more heat output (9,687 vs 4,504 BTU/hr)
- Antminer S9i 131% more home mining score (36.0 vs 83.0)
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.
| Antminer D9 | Metric | Antminer S9i |
|---|---|---|
| $3,000 | Upfront cost (MSRP) | — |
| -$6.75 | Daily net profit | -$2.67 |
| -$5,464 | Net after 1 year | -$973 |
| -$7,928 | Net after 2 years | -$1,946 |
| -$10,391 | Net after 3 years | -$2,919 |
| Does not pay back at current rates (negative daily profit) | Payback period | — |
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 S9iScore: 83/100. 76 dB noise level.
Best for Efficiency
Antminer S9i94.3 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer D9 vs Antminer S9i: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S9i is more profitable at $-2.67/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 Antminer S9i better for noise-sensitive spaces?
The Antminer D9 is quieter at 75 dB compared to the Antminer S9i 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 Antminer S9i?
The Antminer S9i scores 83/100 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.
What is the efficiency difference between Antminer D9 and Antminer S9i?
The Antminer D9 runs at 1,604.0 J/TH while the Antminer S9i runs at 94.3 J/TH — a difference of 1,509.7 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 94% better efficiency (1,604.0 vs 94.3 J/TH).