Bitmain Antminer S9i (13Th) vs NerdAxe
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S9i (13Th) | Specification | NerdAxe |
|---|---|---|
| 13.0 TH/s | Hashrate | 500.0 GH/s |
| 1,280 W | Power Consumption | 12 W |
| 98.5 J/TH | Efficiency | 24.0 J/TH |
| — | Noise Level | 30 dB |
| 4,200.0 kg | Weight | 0.2 kg |
| 4,367 BTU/hr | BTU Output | 41 BTU/hr |
| 31/100 | Home Mining Score | 70/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | D-Central |
Profitability Comparison
Bitmain Antminer S9i (13Th)
NerdAxe
Based on BTC price of $79,271 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the NerdAxe, which leads on 4 of 6 weighted factors (efficiency, power consumption, home mining score, noise level). The standout gap is 99% better power draw (1,280.0 vs 12.0 W) in the NerdAxe's favour. That said, the Bitmain Antminer S9i (13Th) isn't beaten everywhere — it still wins hashrate and price-performance. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Stripped to the numbers, this is how far apart the Bitmain Antminer S9i (13Th) and NerdAxe sit on each measurable spec:
- Bitmain Antminer S9i (13Th) 2500% more hashrate (13.0 vs 0.5 TH/s)
- NerdAxe 99% better power draw (1,280.0 vs 12.0 W)
- NerdAxe 76% better efficiency (98.5 vs 24.0 J/TH)
- NerdAxe 100% better weight (4,200.0 vs 0.2 kg)
- Bitmain Antminer S9i (13Th) 10578% more heat output (4,367.4 vs 40.9 BTU/hr)
- NerdAxe 126% more home mining score (31.0 vs 70.0)
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 S9i (13Th) | Metric | NerdAxe |
|---|---|---|
| $65 | Upfront cost (MSRP) | $69 |
| -$2.60 | Daily net profit | -$0.01 |
| -$1,013 | Net after 1 year | -$73 |
| -$1,961 | Net after 2 years | -$77 |
| -$2,910 | Net after 3 years | -$81 |
| 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
NerdAxeScore: 70/100. 30 dB noise level.
Best for Efficiency
NerdAxe24.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer S9i (13Th) vs NerdAxe: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the NerdAxe is more profitable at $-0.01/day compared to $-2.60/day for the Bitmain Antminer S9i (13Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Bitmain Antminer S9i (13Th) vs NerdAxe: which runs at a lower noise level?
The NerdAxe is quieter at 30 dB compared to the Bitmain Antminer S9i (13Th) 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 S9i (13Th) or the NerdAxe?
The NerdAxe scores 70/100 on our Home Mining Score (vs 31/100 for the Bitmain Antminer S9i (13Th)). 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 Bitmain Antminer S9i (13Th) and NerdAxe?
The Bitmain Antminer S9i (13Th) runs at 98.5 J/TH while the NerdAxe runs at 24.0 J/TH — a difference of 74.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 76% better efficiency (98.5 vs 24.0 J/TH).