Antminer KS3 vs Bitmain S19k Pro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer KS3 | Specification | Bitmain S19k Pro |
|---|---|---|
| 9.4 TH/s | Hashrate | 120.0 TH/s |
| 3,500 W | Power Consumption | 2,760 W |
| 372.3 J/TH | Efficiency | 23.0 J/TH |
| 75 dB | Noise Level | 75 dB |
| 16.1 kg | Weight | 14.5 kg |
| 11,942 BTU/hr | BTU Output | 9,417 BTU/hr |
| 36/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| KHeavyHash | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer KS3
Bitmain S19k Pro
Based on BTC price of $79,088 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitmain S19k Pro, which leads on 4 of 4 weighted factors (efficiency, hashrate, power consumption, price-performance). Where it pulls away hardest is 94% better efficiency (372.3 vs 23.0 J/TH). Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Stripped to the numbers, this is how far apart the Antminer KS3 and Bitmain S19k Pro sit on each measurable spec:
- Bitmain S19k Pro 1177% more hashrate (9.4 vs 120.0 TH/s)
- Bitmain S19k Pro 21% better power draw (3,500 vs 2,760 W)
- Bitmain S19k Pro 94% better efficiency (372.3 vs 23.0 J/TH)
- Bitmain S19k Pro 10% better weight (16.1 vs 14.5 kg)
- Antminer KS3 27% more heat output (11,942 vs 9,417 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 S19k Pro |
|---|---|---|
| $8,000 | Upfront cost (MSRP) | $313 |
| -$8.06 | Daily net profit | -$2.26 |
| -$10,941 | Net after 1 year | -$1,137 |
| -$13,882 | Net after 2 years | -$1,960 |
| -$16,823 | Net after 3 years | -$2,784 |
| 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 S19k Pro23.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Antminer KS3 or the Bitmain S19k Pro?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain S19k Pro is more profitable at $-2.26/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 S19k Pro: which runs at a lower noise level?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Antminer KS3 or Bitmain S19k Pro?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
How far apart are the Antminer KS3 and Bitmain S19k Pro on J/TH?
The Antminer KS3 runs at 372.3 J/TH while the Bitmain S19k Pro runs at 23.0 J/TH — a difference of 349.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 94% better efficiency (372.3 vs 23.0 J/TH).