Thewindminer K9 vs Goldshell KA BOX Pro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Thewindminer K9 | Specification | Goldshell KA BOX Pro |
|---|---|---|
| 10.3 TH/s | Hashrate | 1.6 TH/s |
| 3,300 W | Power Consumption | 600 W |
| 320.4 J/TH | Efficiency | 375.0 J/TH |
| — | Noise Level | 55 dB |
| 14.8 kg | Weight | 2.6 kg |
| 11,260 BTU/hr | BTU Output | 2,047 BTU/hr |
| 22/100 | Home Mining Score | 58/100 |
| — | Release Year | — |
| KHeavyHash | Algorithm | KHeavyHash |
| Thewindminer | Manufacturer | Goldshell |
Profitability Comparison
Thewindminer K9
Goldshell KA BOX Pro
Based on BTC price of $78,153 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
The Thewindminer K9 and Goldshell KA BOX Pro finish in a near dead heat in our weighted scoring. There is no wrong answer here — let your electricity rate, noise tolerance and budget break the tie using the breakdowns above.
Spec Deltas
Here is every spec where the Thewindminer K9 and Goldshell KA BOX Pro actually differ, with the gap quantified:
- Thewindminer K9 544% more hashrate (10.3 vs 1.6 TH/s)
- Goldshell KA BOX Pro 82% better power draw (3,300 vs 600 W)
- Thewindminer K9 15% better efficiency (320 vs 375 J/TH)
- Goldshell KA BOX Pro 82% better weight (14.8 vs 2.6 kg)
- Thewindminer K9 450% more heat output (11,260 vs 2,047 BTU/hr)
- Goldshell KA BOX Pro 164% more home mining score (22.0 vs 58.0)
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.
| Thewindminer K9 | Metric | Goldshell KA BOX Pro |
|---|---|---|
| $15,429 | Upfront cost (MSRP) | $129 |
| -$7.55 | Daily net profit | -$1.38 |
| -$18,185 | Net after 1 year | -$634 |
| -$20,941 | Net after 2 years | -$1,138 |
| -$23,696 | Net after 3 years | -$1,643 |
| 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
Goldshell KA BOX ProScore: 58/100. 55 dB noise level.
Best for Efficiency
Thewindminer K9320.4 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Thewindminer K9 or Goldshell KA BOX Pro more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Goldshell KA BOX Pro is more profitable at $-1.38/day compared to $-7.55/day for the Thewindminer K9. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Thewindminer K9 or the Goldshell KA BOX Pro better for noise-sensitive spaces?
The Goldshell KA BOX Pro is quieter at 55 dB compared to the Thewindminer K9 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Thewindminer K9 or the Goldshell KA BOX Pro?
The Goldshell KA BOX Pro scores 58/100 on our Home Mining Score (vs 22/100 for the Thewindminer K9). 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 Thewindminer K9 and Goldshell KA BOX Pro?
The Thewindminer K9 runs at 320.4 J/TH while the Goldshell KA BOX Pro runs at 375.0 J/TH — a difference of 54.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 15% better efficiency (320 vs 375 J/TH).