Bitmain Antminer S9 (12.5Th) vs NerdQAxe
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S9 (12.5Th) | Specification | NerdQAxe |
|---|---|---|
| 12.5 TH/s | Taux de hachage | 2.0 TH/s |
| 1,225 W | Consommation électrique | 80 W |
| 98.0 J/TH | Efficiency | 40.0 J/TH |
| — | Niveau de bruit | 40 dB |
| 4,200.0 kg | Weight | 0.4 kg |
| 4,180 BTU/hr | BTU Output | 273 BTU/hr |
| 31/100 | Home Mining Score | 71/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | D-Central |
Profitability Comparison
Bitmain Antminer S9 (12.5Th)
NerdQAxe
Based on BTC price of $78,071 and current network difficulty as of May 17, 2026. Actual results vary.
Verdict
Weighing six performance factors, the NerdQAxe comes out ahead — it takes 4 of 6 (efficacité, consommation électrique, score de minage domestique, niveau sonore). Where it pulls away hardest is 93% better power draw (1,225.0 vs 80.0 W). The Bitmain Antminer S9 (12.5Th) holds the edge in hashrate and rapport qualité-prix. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
The Bitmain Antminer S9 (12.5Th) and NerdQAxe diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer S9 (12.5Th) 525% more hashrate (12.5 vs 2.0 TH/s)
- NerdQAxe 93% better power draw (1,225.0 vs 80.0 W)
- NerdQAxe 59% better efficacité (98.0 vs 40.0 J/TH)
- NerdQAxe 100% better weight (4,200.0 vs 0.4 kg)
- Bitmain Antminer S9 (12.5Th) 1431% more heat output (4,180 vs 273 BTU/hr)
- NerdQAxe 129% more score de minage domestique (31.0 vs 71.0)
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 (12.5Th) | Metric | NerdQAxe |
|---|---|---|
| $65 | Upfront cost (MSRP) | $249 |
| -$2.49 | Daily net profit | -$0.12 |
| -$974 | Net after 1 year | -$293 |
| -$1,883 | Net after 2 years | -$337 |
| -$2,793 | Net after 3 years | -$381 |
| 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
NerdQAxeScore: 71/100. 40 dB noise level.
Best for Efficiency
NerdQAxe40.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S9 (12.5Th) or NerdQAxe more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the NerdQAxe is more profitable at $-0.12/day compared to $-2.49/day for the Bitmain Antminer S9 (12.5Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Bitmain Antminer S9 (12.5Th) vs NerdQAxe: which runs at a lower noise level?
The NerdQAxe is quieter at 40 dB compared to the Bitmain Antminer S9 (12.5Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Bitmain Antminer S9 (12.5Th) or the NerdQAxe?
The NerdQAxe scores 71/100 on our Home Mining Score (vs 31/100 for the Bitmain Antminer S9 (12.5Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer S9 (12.5Th) vs NerdQAxe: how much does the efficiency gap matter?
The Bitmain Antminer S9 (12.5Th) runs at 98.0 J/TH while the NerdQAxe runs at 40.0 J/TH — a difference of 58.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 59% better efficacité (98.0 vs 40.0 J/TH).