Bitmain Antminer K7 (63.5Th) vs Goldshell CK Box II
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer K7 (63.5Th) | 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 |
| — | Noise Level | — |
| — | Weight | 3.0 kg |
| 10,509 BTU/hr | BTU Output | 1,365 BTU/hr |
| 22/100 | Home Mining Score | 34/100 |
| — | Release Year | — |
| Eaglesong | Algorithm | Eaglesong |
| Bitmain | Manufacturer | Goldshell |
Profitability Comparison
Bitmain Antminer K7 (63.5Th)
Goldshell CK Box II
Based on BTC price of $78,209 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitmain Antminer K7 (63.5Th), which leads on 3 of 5 weighted factors (efficiency, hashrate, price-performance). Its biggest concrete edge: 2924% more hashrate (63.5 vs 2.1 TH/s). The Goldshell CK Box II holds the edge in power consumption and home mining score. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Here is every spec where the Bitmain Antminer K7 (63.5Th) and Goldshell CK Box II actually differ, with the gap quantified:
- Bitmain Antminer K7 (63.5Th) 2924% more hashrate (63.5 vs 2.1 TH/s)
- Goldshell CK Box II 87% better power draw (3,080 vs 400 W)
- Bitmain Antminer K7 (63.5Th) 75% better efficiency (48.5 vs 190.5 J/TH)
- Bitmain Antminer K7 (63.5Th) 670% more heat output (10,509 vs 1,365 BTU/hr)
- Goldshell CK Box II 55% more home mining score (22.0 vs 34.0)
Cost & ROI Over Time
Hardware cost is only half the story — here is how each miner's upfront price plays out against cumulative profit at a $0.10/kWh rate.
| Bitmain Antminer K7 (63.5Th) | Metric | Goldshell CK Box II |
|---|---|---|
| $1,860 | Upfront cost (MSRP) | $246 |
| -$5.11 | Daily net profit | -$0.88 |
| -$3,724 | Net after 1 year | -$569 |
| -$5,588 | Net after 2 years | -$892 |
| -$7,452 | 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
Goldshell CK Box IIScore: 34/100. 0 dB noise level.
Best for Efficiency
Bitmain Antminer K7 (63.5Th)48.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer K7 (63.5Th) 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 $-5.11/day for the Bitmain Antminer K7 (63.5Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer K7 (63.5Th) or the Goldshell CK Box II better for noise-sensitive spaces?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Bitmain Antminer K7 (63.5Th) or Goldshell CK Box II?
The Goldshell CK Box II scores 34/100 on our Home Mining Score (vs 22/100 for the Bitmain Antminer K7 (63.5Th)). 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 K7 (63.5Th) and Goldshell CK Box II on J/TH?
The Bitmain Antminer K7 (63.5Th) 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).