Antminer KS3 vs Bitmain KAS KS7
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer KS3 | Specification | Bitmain KAS KS7 |
|---|---|---|
| 9.4 TH/s | Hashrate | 40.0 TH/s |
| 3,500 W | Power Consumption | 3,080 W |
| 372.3 J/TH | Efficiency | 77.0 J/TH |
| 75 dB | Noise Level | 75 dB |
| 16.1 kg | Weight | 16.4 kg |
| 11,942 BTU/hr | BTU Output | 10,509 BTU/hr |
| 36/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| KHeavyHash | Algorithm | KHeavyHash |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer KS3
Bitmain KAS KS7
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 Bitmain KAS KS7 comes out ahead — it takes 4 of 4 (efficiency, hashrate, power consumption, price-performance). Where it pulls away hardest is 79% better efficiency (372.3 vs 77.0 J/TH). The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
The Antminer KS3 and Bitmain KAS KS7 diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain KAS KS7 326% more hashrate (9.4 vs 40.0 TH/s)
- Bitmain KAS KS7 12% better power draw (3,500 vs 3,080 W)
- Bitmain KAS KS7 79% better efficiency (372.3 vs 77.0 J/TH)
- Antminer KS3 2% better weight (16.1 vs 16.4 kg)
- Antminer KS3 14% more heat output (11,942 vs 10,509 BTU/hr)
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 KS3 | Metric | Bitmain KAS KS7 |
|---|---|---|
| $8,000 | Upfront cost (MSRP) | $1,590 |
| -$8.06 | Daily net profit | -$5.95 |
| -$10,943 | Net after 1 year | -$3,763 |
| -$13,885 | Net after 2 years | -$5,936 |
| -$16,828 | Net after 3 years | -$8,109 |
| 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
TieBoth miners are equally suitable for home use.
Best for Efficiency
Bitmain KAS KS777.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer KS3 or Bitmain KAS KS7 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain KAS KS7 is more profitable at $-5.95/day compared to $-8.06/day for the Antminer KS3. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer KS3 vs Bitmain KAS KS7: which runs at a lower noise level?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Antminer KS3 vs Bitmain KAS KS7: which fits a residential setup better?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
What is the efficiency difference between Antminer KS3 and Bitmain KAS KS7?
The Antminer KS3 runs at 372.3 J/TH while the Bitmain KAS KS7 runs at 77.0 J/TH — a difference of 295.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 79% better efficiency (372.3 vs 77.0 J/TH).