Antminer K7 vs Bitmain Antminer KS3 (9.4Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer K7 | Specification | Bitmain Antminer KS3 (9.4Th) |
|---|---|---|
| 63.5 TH/s | Hashrate | 9.4 TH/s |
| 3,080 W | Power Consumption | 3,500 W |
| 48.5 J/TH | Efficiency | 372.3 J/TH |
| 75 dB | Noise Level | — |
| 14.0 kg | Weight | 17.7 kg |
| 10,509 BTU/hr | BTU Output | 11,942 BTU/hr |
| 36/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| Eaglesong | Algorithm | KHeavyHash |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer K7
Bitmain Antminer KS3 (9.4Th)
Based on BTC price of $78,139 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Antminer K7 comes out ahead — it takes 6 of 6 (efficiency, hashrate, power consumption, home mining score, noise level, price-performance). Where it pulls away hardest is 87% better efficiency (48.5 vs 372.3 J/TH). Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
The Antminer K7 and Bitmain Antminer KS3 (9.4Th) diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Antminer K7 576% more hashrate (63.5 vs 9.4 TH/s)
- Antminer K7 12% better power draw (3,080 vs 3,500 W)
- Antminer K7 87% better efficiency (48.5 vs 372.3 J/TH)
- Antminer K7 21% better weight (14.0 vs 17.7 kg)
- Bitmain Antminer KS3 (9.4Th) 14% more heat output (10,509 vs 11,942 BTU/hr)
- Antminer K7 64% more home mining score (36.0 vs 22.0)
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.
| Antminer K7 | Metric | Bitmain Antminer KS3 (9.4Th) |
|---|---|---|
| $3,500 | Upfront cost (MSRP) | $2,500 |
| -$5.11 | Daily net profit | -$8.06 |
| -$5,365 | Net after 1 year | -$5,443 |
| -$7,229 | Net after 2 years | -$8,385 |
| -$9,094 | Net after 3 years | -$11,328 |
| 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 Bitmain Antminer KS3 (9.4Th): which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer K7 is more profitable at $-5.11/day compared to $-8.06/day for the Bitmain Antminer KS3 (9.4Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer K7 or Bitmain Antminer KS3 (9.4Th)?
The Antminer K7 is quieter at 75 dB compared to the Bitmain Antminer KS3 (9.4Th) 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 KS3 (9.4Th)?
The Antminer K7 scores 36/100 on our Home Mining Score (vs 22/100 for the Bitmain Antminer KS3 (9.4Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Antminer K7 vs Bitmain Antminer KS3 (9.4Th): how much does the efficiency gap matter?
The Antminer K7 runs at 48.5 J/TH while the Bitmain Antminer KS3 (9.4Th) runs at 372.3 J/TH — a difference of 323.8 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 87% better efficiency (48.5 vs 372.3 J/TH).