Antminer K7 vs Goldshell CK Box II
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer K7 | Specification | Goldshell CK Box II |
|---|---|---|
| 63.5 TH/s | Hashrate | 2.1 TH/s |
| 3,080 W | Power Consumption | 400 W |
| 48.5 J/TH | Efficiency | 190.5 J/TH |
| 75 dB | Noise Level | — |
| 14.0 kg | Weight | 3.0 kg |
| 10,509 BTU/hr | BTU Output | 1,365 BTU/hr |
| 36/100 | Home Mining Score | 34/100 |
| — | Release Year | — |
| Eaglesong | Algorithm | Eaglesong |
| Bitmain | Manufacturer | Goldshell |
Profitability Comparison
Antminer K7
Goldshell CK Box II
Based on BTC price of $79,051 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer K7 wins on 5 of 6 factors (efficiency, hashrate, home mining score, noise level, price-performance). The standout gap is 2924% more hashrate (63.5 vs 2.1 TH/s) in the Antminer K7's favour. The Goldshell CK Box II holds the edge in power consumption. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
The Antminer K7 and Goldshell CK Box II diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Antminer K7 2924% more hashrate (63.5 vs 2.1 TH/s)
- Goldshell CK Box II 87% better power draw (3,080 vs 400 W)
- Antminer K7 75% better efficiency (48.5 vs 190.5 J/TH)
- Goldshell CK Box II 79% better weight (14.0 vs 3.0 kg)
- Antminer K7 670% more heat output (10,509 vs 1,365 BTU/hr)
- Antminer K7 6% more home mining score (36.0 vs 34.0)
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.
| Antminer K7 | Metric | Goldshell CK Box II |
|---|---|---|
| $3,500 | Upfront cost (MSRP) | $246 |
| -$5.08 | Daily net profit | -$0.88 |
| -$5,355 | Net after 1 year | -$569 |
| -$7,210 | Net after 2 years | -$891 |
| -$9,065 | Net after 3 years | -$1,214 |
| 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
Antminer K7Score: 36/100. 75 dB noise level.
Best for Efficiency
Antminer K748.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer K7 vs Goldshell CK Box II: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Goldshell CK Box II is more profitable at $-0.88/day compared to $-5.08/day for the Antminer K7. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer K7 vs Goldshell CK Box II: which runs at a lower noise level?
The Antminer K7 is quieter at 75 dB compared to the Goldshell CK Box II at 0 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Antminer K7 or the Goldshell CK Box II?
The Antminer K7 scores 36/100 on our Home Mining Score (vs 34/100 for the Goldshell CK Box II). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the Antminer K7 and Goldshell CK Box II on J/TH?
The Antminer K7 runs at 48.5 J/TH while the Goldshell CK Box II runs at 190.5 J/TH — a difference of 142.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 75% better efficiency (48.5 vs 190.5 J/TH).