Antminer Slim Edition (S9) vs Bitaxe Ultra
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer Slim Edition (S9) | Specification | Bitaxe Ultra |
|---|---|---|
| 12.0 TH/s | Hashrate | 500.0 GH/s |
| 1,100 W | Power Consumption | 15 W |
| 91.7 J/TH | Efficiency | 30.0 J/TH |
| 65 dB | Noise Level | 35 dB |
| 3.5 kg | Weight | 0.3 kg |
| 3,753 BTU/hr | BTU Output | 51 BTU/hr |
| 52/100 | Home Mining Score | 70/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| D-Central | Manufacturer | D-Central |
Profitability Comparison
Antminer Slim Edition (S9)
Bitaxe Ultra
Based on BTC price of $78,257 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitaxe Ultra, 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 (1,100.0 vs 15.0 W). That said, the Antminer Slim Edition (S9) isn't beaten everywhere — it still wins hashrate and price-performance. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
The Antminer Slim Edition (S9) and Bitaxe Ultra diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Antminer Slim Edition (S9) 2300% more hashrate (12.0 vs 0.5 TH/s)
- Bitaxe Ultra 99% better power draw (1,100.0 vs 15.0 W)
- Bitaxe Ultra 67% better efficiency (91.7 vs 30.0 J/TH)
- Bitaxe Ultra 46% better noise (65.0 vs 35.0 dB)
- Bitaxe Ultra 91% better weight (3.5 vs 0.3 kg)
- Antminer Slim Edition (S9) 7230% more heat output (3,753.2 vs 51.2 BTU/hr)
- Bitaxe Ultra 35% more home mining score (52.0 vs 70.0)
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.
| Antminer Slim Edition (S9) | Metric | Bitaxe Ultra |
|---|---|---|
| $350 | Upfront cost (MSRP) | $79 |
| -$2.21 | Daily net profit | -$0.02 |
| -$1,156 | Net after 1 year | -$86 |
| -$1,962 | Net after 2 years | -$92 |
| -$2,768 | Net after 3 years | -$99 |
| 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
Bitaxe UltraScore: 70/100. 35 dB noise level.
Best for Efficiency
Bitaxe Ultra30.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer Slim Edition (S9) or Bitaxe Ultra more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitaxe Ultra is more profitable at $-0.02/day compared to $-2.21/day for the Antminer Slim Edition (S9). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Antminer Slim Edition (S9) or the Bitaxe Ultra better for noise-sensitive spaces?
The Bitaxe Ultra is quieter at 35 dB compared to the Antminer Slim Edition (S9) at 65 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer Slim Edition (S9) or Bitaxe Ultra?
The Bitaxe Ultra scores 70/100 on our Home Mining Score (vs 52/100 for the Antminer Slim Edition (S9)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Antminer Slim Edition (S9) vs Bitaxe Ultra: how much does the efficiency gap matter?
The Antminer Slim Edition (S9) runs at 91.7 J/TH while the Bitaxe Ultra runs at 30.0 J/TH — a difference of 61.7 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 67% better efficiency (91.7 vs 30.0 J/TH).