Bitmain Antminer S9 (12.5Th) vs Bitmain Antminer S9 (13.5Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S9 (12.5Th) | Specification | Bitmain Antminer S9 (13.5Th) |
|---|---|---|
| 12.5 TH/s | Hashrate | 13.5 TH/s |
| 1,225 W | Power Consumption | 1,323 W |
| 98.0 J/TH | Efficiency | 98.0 J/TH |
| — | Noise Level | — |
| 4,200.0 kg | Weight | 4,200.0 kg |
| 4,180 BTU/hr | BTU Output | 4,514 BTU/hr |
| 31/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S9 (12.5Th)
Bitmain Antminer S9 (13.5Th)
Based on BTC price of $79,029 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Bitmain Antminer S9 (13.5Th) comes out ahead — it takes 2 of 3 (hashrate, price-performance). Its biggest concrete edge: 8% more hashrate (12.5 vs 13.5 TH/s). The Bitmain Antminer S9 (12.5Th) claws back ground on power consumption. 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 (12.5Th) and Bitmain Antminer S9 (13.5Th) diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer S9 (13.5Th) 8% more hashrate (12.5 vs 13.5 TH/s)
- Bitmain Antminer S9 (12.5Th) 7% better power draw (1,225 vs 1,323 W)
- Bitmain Antminer S9 (13.5Th) 8% more heat output (4,180 vs 4,514 BTU/hr)
Cost & ROI Over Time
Sticker price versus what the miner actually earns back: the table below projects cumulative net profit at a $0.10/kWh electricity rate.
| Bitmain Antminer S9 (12.5Th) | Metric | Bitmain Antminer S9 (13.5Th) |
|---|---|---|
| $65 | Upfront cost (MSRP) | $65 |
| -$2.49 | Daily net profit | -$2.68 |
| -$972 | Net after 1 year | -$1,045 |
| -$1,879 | Net after 2 years | -$2,024 |
| -$2,787 | Net after 3 years | -$3,004 |
| 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
TieBoth miners are equally suitable for home use.
Best for Efficiency
TieBoth miners have comparable efficiency.
Frequently Asked Questions
Is the Bitmain Antminer S9 (12.5Th) or Bitmain Antminer S9 (13.5Th) more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S9 (12.5Th) is more profitable at $-2.49/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.
Bitmain Antminer S9 (12.5Th) vs Bitmain Antminer S9 (13.5Th): which runs at a lower noise level?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Bitmain Antminer S9 (12.5Th) vs Bitmain Antminer S9 (13.5Th): which fits a residential setup better?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
What is the efficiency difference between Bitmain Antminer S9 (12.5Th) and Bitmain Antminer S9 (13.5Th)?
The Bitmain Antminer S9 (12.5Th) runs at 98.0 J/TH while the Bitmain Antminer S9 (13.5Th) runs at 98.0 J/TH — a difference of 0.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.