Bitmain Antminer S9i (13Th) vs Bitaxe Gamma
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S9i (13Th) | Specification | Bitaxe Gamma |
|---|---|---|
| 13.0 TH/s | Hashrate | 1,200.0 GH/s |
| 1,280 W | Power Consumption | 15 W |
| 98.5 J/TH | Efficiency | 12.5 J/TH |
| — | Noise Level | 38 dB |
| 4,200.0 kg | Weight | 0.3 kg |
| 4,367 BTU/hr | BTU Output | 51 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)
Bitaxe Gamma
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 Bitaxe Gamma, which leads on 4 of 6 weighted factors (efficiency, power consumption, home mining score, noise level). Where it pulls away hardest is 99% better power draw (1,280.0 vs 15.0 W). The Bitmain Antminer S9i (13Th) holds the edge in hashrate and price-performance. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the Bitmain Antminer S9i (13Th) and Bitaxe Gamma actually differ, with the gap quantified:
- Bitmain Antminer S9i (13Th) 983% more hashrate (13.0 vs 1.2 TH/s)
- Bitaxe Gamma 99% better power draw (1,280.0 vs 15.0 W)
- Bitaxe Gamma 87% better efficiency (98.5 vs 12.5 J/TH)
- Bitaxe Gamma 100% better weight (4,200.0 vs 0.3 kg)
- Bitmain Antminer S9i (13Th) 8430% more heat output (4,367.4 vs 51.2 BTU/hr)
- Bitaxe Gamma 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 | Bitaxe Gamma |
|---|---|---|
| $65 | Upfront cost (MSRP) | $99 |
| -$2.60 | Daily net profit | $0.01 |
| -$1,013 | Net after 1 year | -$96 |
| -$1,961 | Net after 2 years | -$93 |
| -$2,910 | Net after 3 years | -$90 |
| Does not pay back at current rates (negative daily profit) | Payback period | Takes ~34.9 years to pay back at current rates |
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
Bitaxe Gamma$2.61/day higher profit at current rates.
Best for Home Mining
Bitaxe GammaScore: 70/100. 38 dB noise level.
Best for Efficiency
Bitaxe Gamma12.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S9i (13Th) or Bitaxe Gamma more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitaxe Gamma 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.
Is the Bitmain Antminer S9i (13Th) or the Bitaxe Gamma better for noise-sensitive spaces?
The Bitaxe Gamma is quieter at 38 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 Bitaxe Gamma?
The Bitaxe Gamma 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.
How far apart are the Bitmain Antminer S9i (13Th) and Bitaxe Gamma on J/TH?
The Bitmain Antminer S9i (13Th) runs at 98.5 J/TH while the Bitaxe Gamma runs at 12.5 J/TH — a difference of 86.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 87% better efficiency (98.5 vs 12.5 J/TH).