Bitmain Antminer S9 (13.5Th) vs Antminer S9i
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S9 (13.5Th) | Specification | Antminer S9i |
|---|---|---|
| 13.5 TH/s | Hashrate | 14.0 TH/s |
| 1,323 W | Power Consumption | 1,320 W |
| 98.0 J/TH | Efficiency | 94.3 J/TH |
| — | Noise Level | 76 dB |
| 4,200.0 kg | Weight | 4.2 kg |
| 4,514 BTU/hr | BTU Output | 4,504 BTU/hr |
| 31/100 | Home Mining Score | 83/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S9 (13.5Th)
Antminer S9i
Based on BTC price of $79,095 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer S9i wins on 5 of 5 factors (efficiency, hashrate, power consumption, home mining score, noise level). The standout gap is 4% better efficiency (98.0 vs 94.3 J/TH) in the Antminer S9i's favour. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
The Bitmain Antminer S9 (13.5Th) and Antminer S9i diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Antminer S9i 4% more hashrate (13.5 vs 14.0 TH/s)
- Antminer S9i 4% better efficiency (98.0 vs 94.3 J/TH)
- Antminer S9i 100% better weight (4,200.0 vs 4.2 kg)
- Antminer S9i 168% more home mining score (31.0 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.
| Bitmain Antminer S9 (13.5Th) | Metric | Antminer S9i |
|---|---|---|
| $65 | Upfront cost (MSRP) | — |
| -$2.68 | Daily net profit | -$2.66 |
| -$1,045 | Net after 1 year | -$970 |
| -$2,024 | Net after 2 years | -$1,941 |
| -$3,004 | Net after 3 years | -$2,911 |
| 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
Bitmain Antminer S9 (13.5Th) 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 $-2.66/day compared to $-2.68/day for the Bitmain Antminer S9 (13.5Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer S9 (13.5Th) or the Antminer S9i better for noise-sensitive spaces?
The Antminer S9i is quieter at 76 dB compared to the Bitmain Antminer S9 (13.5Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer S9 (13.5Th) vs Antminer S9i: which fits a residential setup better?
The Antminer S9i scores 83/100 on our Home Mining Score (vs 31/100 for the Bitmain Antminer S9 (13.5Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer S9 (13.5Th) vs Antminer S9i: how much does the efficiency gap matter?
The Bitmain Antminer S9 (13.5Th) runs at 98.0 J/TH while the Antminer S9i runs at 94.3 J/TH — a difference of 3.7 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 4% better efficiency (98.0 vs 94.3 J/TH).