Antminer K7 vs Bitmain Antminer KA3 (166Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer K7 | Specification | Bitmain Antminer KA3 (166Th) |
|---|---|---|
| 63.5 TH/s | Hashrate | 166.0 TH/s |
| 3,080 W | Power Consumption | 3,154 W |
| 48.5 J/TH | Efficiency | 19.0 J/TH |
| 75 dB | Noise Level | — |
| 14.0 kg | Weight | 16,100.0 kg |
| 10,509 BTU/hr | BTU Output | 10,761 BTU/hr |
| 36/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| Eaglesong | Algorithm | Blake2s |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer K7
Bitmain Antminer KA3 (166Th)
Based on BTC price of $78,221 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitmain Antminer KA3 (166Th), which leads on 3 of 6 weighted factors (efficiency, hashrate, price-performance). Its biggest concrete edge: 161% more hashrate (63.5 vs 166.0 TH/s). The Antminer K7 holds the edge in power consumption and home mining score and noise level. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the Antminer K7 and Bitmain Antminer KA3 (166Th) actually differ, with the gap quantified:
- Bitmain Antminer KA3 (166Th) 161% more hashrate (63.5 vs 166.0 TH/s)
- Antminer K7 2% better power draw (3,080 vs 3,154 W)
- Bitmain Antminer KA3 (166Th) 61% better efficiency (48.5 vs 19.0 J/TH)
- Antminer K7 100% better weight (14.0 vs 16,100.0 kg)
- Bitmain Antminer KA3 (166Th) 2% more heat output (10,509 vs 10,761 BTU/hr)
- Antminer K7 64% more home mining score (36.0 vs 22.0)
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.
| Antminer K7 | Metric | Bitmain Antminer KA3 (166Th) |
|---|---|---|
| $3,500 | Upfront cost (MSRP) | $1,399 |
| -$5.11 | Daily net profit | -$1.59 |
| -$5,364 | Net after 1 year | -$1,981 |
| -$7,228 | Net after 2 years | -$2,563 |
| -$9,091 | Net after 3 years | -$3,145 |
| 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
Bitmain Antminer KA3 (166Th)19.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer K7 vs Bitmain Antminer KA3 (166Th): which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer KA3 (166Th) is more profitable at $-1.59/day compared to $-5.11/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 Bitmain Antminer KA3 (166Th): which runs at a lower noise level?
The Antminer K7 is quieter at 75 dB compared to the Bitmain Antminer KA3 (166Th) 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 Bitmain Antminer KA3 (166Th)?
The Antminer K7 scores 36/100 on our Home Mining Score (vs 22/100 for the Bitmain Antminer KA3 (166Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Antminer K7 vs Bitmain Antminer KA3 (166Th): how much does the efficiency gap matter?
The Antminer K7 runs at 48.5 J/TH while the Bitmain Antminer KA3 (166Th) runs at 19.0 J/TH — a difference of 29.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 61% better efficiency (48.5 vs 19.0 J/TH).