Bitmain Antminer KS5 Pro (21Th) vs Goldshell KA BOX
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer KS5 Pro (21Th) | Specification | Goldshell KA BOX |
|---|---|---|
| 21.0 TH/s | Taux de hachage | 1.2 TH/s |
| 3,150 W | Consommation électrique | 400 W |
| 150.0 J/TH | Efficiency | 339.0 J/TH |
| 75 dB | Niveau de bruit | 55 dB |
| 15.8 kg | Weight | 2.6 kg |
| 10,748 BTU/hr | BTU Output | 1,365 BTU/hr |
| 36/100 | Home Mining Score | 62/100 |
| — | Release Year | — |
| KHeavyHash | Algorithme | KHeavyHash |
| Bitmain | Manufacturer | Goldshell |
Profitability Comparison
Bitmain Antminer KS5 Pro (21Th)
Goldshell KA BOX
Based on BTC price of $78,186 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Bitmain Antminer KS5 Pro (21Th) comes out ahead — it takes 3 of 6 (efficacité, hashrate, rapport qualité-prix). The standout gap is 1680% more hashrate (21.0 vs 1.2 TH/s) in the Bitmain Antminer KS5 Pro (21Th)'s favour. The Goldshell KA BOX holds the edge in consommation électrique and score de minage domestique and niveau sonore. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Here is every spec where the Bitmain Antminer KS5 Pro (21Th) and Goldshell KA BOX actually differ, with the gap quantified:
- Bitmain Antminer KS5 Pro (21Th) 1680% more hashrate (21.0 vs 1.2 TH/s)
- Goldshell KA BOX 87% better power draw (3,150 vs 400 W)
- Bitmain Antminer KS5 Pro (21Th) 56% better efficacité (150 vs 339 J/TH)
- Goldshell KA BOX 27% better noise (75.0 vs 55.0 dB)
- Goldshell KA BOX 84% better weight (15.8 vs 2.6 kg)
- Bitmain Antminer KS5 Pro (21Th) 688% more heat output (10,748 vs 1,365 BTU/hr)
- Goldshell KA BOX 72% more score de minage domestique (36.0 vs 62.0)
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.
| Bitmain Antminer KS5 Pro (21Th) | Metric | Goldshell KA BOX |
|---|---|---|
| $860 | Upfront cost (MSRP) | $305 |
| -$6.80 | Daily net profit | -$0.92 |
| -$3,344 | Net after 1 year | -$640 |
| -$5,827 | Net after 2 years | -$975 |
| -$8,311 | Net after 3 years | -$1,310 |
| 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 BOXScore: 62/100. 55 dB noise level.
Best for Efficiency
Bitmain Antminer KS5 Pro (21Th)150.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer KS5 Pro (21Th) vs Goldshell KA BOX: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Goldshell KA BOX is more profitable at $-0.92/day compared to $-6.80/day for the Bitmain Antminer KS5 Pro (21Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer KS5 Pro (21Th) or Goldshell KA BOX?
The Goldshell KA BOX is quieter at 55 dB compared to the Bitmain Antminer KS5 Pro (21Th) at 75 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Bitmain Antminer KS5 Pro (21Th) or the Goldshell KA BOX?
The Goldshell KA BOX scores 62/100 on our Home Mining Score (vs 36/100 for the Bitmain Antminer KS5 Pro (21Th)). 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 KS5 Pro (21Th) and Goldshell KA BOX on J/TH?
The Bitmain Antminer KS5 Pro (21Th) runs at 150.0 J/TH while the Goldshell KA BOX runs at 339.0 J/TH — a difference of 189.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 56% better efficacité (150 vs 339 J/TH).