Bitmain Antminer B3 (780Hz) vs Antminer K7
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer B3 (780Hz) | Specification | Antminer K7 |
|---|---|---|
| 780.0 H/s | Taux de hachage | 63.5 TH/s |
| 360 W | Consommation électrique | 3,080 W |
| 0.5 J/TH | Efficiency | 48.5 J/TH |
| — | Niveau de bruit | 75 dB |
| — | Weight | 14.0 kg |
| 1,228 BTU/hr | BTU Output | 10,509 BTU/hr |
| 34/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| Tensority | Algorithme | Eaglesong |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer B3 (780Hz)
Antminer K7
Based on BTC price of $64,075 and current network difficulty as of Jun 4, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitmain Antminer B3 (780Hz), which leads on 3 of 5 weighted factors (efficacité, hashrate, consommation électrique). Its biggest concrete edge: 99% better efficacité (0.5 vs 48.5 J/TH). The Antminer K7 claws back ground on score de minage domestique and niveau sonore. 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 B3 (780Hz) and Antminer K7 actually differ, with the gap quantified:
- Bitmain Antminer B3 (780Hz) 1128% more hashrate (780.0 vs 63.5 TH/s)
- Bitmain Antminer B3 (780Hz) 88% better power draw (360 vs 3,080 W)
- Bitmain Antminer B3 (780Hz) 99% better efficacité (0.5 vs 48.5 J/TH)
- Antminer K7 756% more heat output (1,228 vs 10,509 BTU/hr)
- Antminer K7 6% more score de minage domestique (34.0 vs 36.0)
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 B3 (780Hz) | Metric | Antminer K7 |
|---|---|---|
| — | Upfront cost (MSRP) | $3,500 |
| $21.75 | Daily net profit | -$5.55 |
| +$7,938 | Net after 1 year | -$5,526 |
| +$15,875 | Net after 2 years | -$7,552 |
| +$23,813 | Net after 3 years | -$9,579 |
| — | 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
Bitmain Antminer B3 (780Hz)$27.30/day higher profit at current rates.
Best for Home Mining
Antminer K7Score: 36/100. 75 dB noise level.
Best for Efficiency
Bitmain Antminer B3 (780Hz)0.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer B3 (780Hz) vs Antminer K7: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer B3 (780Hz) is more profitable at $21.75/day compared to $-5.55/day for the Antminer K7. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer B3 (780Hz) or Antminer K7?
The Antminer K7 is quieter at 75 dB compared to the Bitmain Antminer B3 (780Hz) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer B3 (780Hz) vs Antminer K7: which fits a residential setup better?
The Antminer K7 scores 36/100 on our Home Mining Score (vs 34/100 for the Bitmain Antminer B3 (780Hz)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer B3 (780Hz) vs Antminer K7: how much does the efficiency gap matter?
The Bitmain Antminer B3 (780Hz) runs at 0.5 J/TH while the Antminer K7 runs at 48.5 J/TH — a difference of 48.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 99% better efficacité (0.5 vs 48.5 J/TH).