Antminer D7 vs Antminer S9i
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer D7 | Specification | Antminer S9i |
|---|---|---|
| 1,286.0 GH/s | Hashrate | 14.0 TH/s |
| 3,148 W | Power Consumption | 1,320 W |
| 2,447.9 J/TH | Efficiency | 94.3 J/TH |
| 70 dB | Noise Level | 76 dB |
| 14.4 kg | Weight | 4.2 kg |
| 10,741 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 D7
Antminer S9i
Based on BTC price of $77,884 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Antminer S9i comes out ahead — it takes 4 of 5 (efficiency, hashrate, power consumption, home mining score). Where it pulls away hardest is 96% better efficiency (2,447.9 vs 94.3 J/TH). The Antminer D7 holds the edge in noise level. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
The Antminer D7 and Antminer S9i diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Antminer S9i 989% more hashrate (1.3 vs 14.0 TH/s)
- Antminer S9i 58% better power draw (3,148 vs 1,320 W)
- Antminer S9i 96% better efficiency (2,447.9 vs 94.3 J/TH)
- Antminer D7 8% better noise (70.0 vs 76.0 dB)
- Antminer S9i 71% better weight (14.4 vs 4.2 kg)
- Antminer D7 138% more heat output (10,741 vs 4,504 BTU/hr)
- Antminer S9i 131% more home mining score (36.0 vs 83.0)
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 D7 | Metric | Antminer S9i |
|---|---|---|
| $2,500 | Upfront cost (MSRP) | — |
| -$7.51 | Daily net profit | -$2.67 |
| -$5,241 | Net after 1 year | -$973 |
| -$7,982 | Net after 2 years | -$1,946 |
| -$10,722 | Net after 3 years | -$2,920 |
| 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 D7 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 $-7.51/day for the Antminer D7. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer D7 vs Antminer S9i: which runs at a lower noise level?
The Antminer D7 is quieter at 70 dB compared to the Antminer S9i at 76 dB. For home mining, lower noise levels make a significant difference in livability.
Antminer D7 vs Antminer S9i: which fits a residential setup better?
The Antminer S9i scores 83/100 on our Home Mining Score (vs 36/100 for the Antminer D7). 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 D7 and Antminer S9i?
The Antminer D7 runs at 2,447.9 J/TH while the Antminer S9i runs at 94.3 J/TH — a difference of 2,353.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 96% better efficiency (2,447.9 vs 94.3 J/TH).