Antminer KS3 vs Bitmain Antminer KS5 (20Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer KS3 | Specification | Bitmain Antminer KS5 (20Th) |
|---|---|---|
| 9.4 TH/s | Hashrate | 20.0 TH/s |
| 3,500 W | Power Consumption | 3,000 W |
| 372.3 J/TH | Efficiency | 150.0 J/TH |
| 75 dB | Noise Level | 75 dB |
| 16.1 kg | Weight | 15.8 kg |
| 11,942 BTU/hr | BTU Output | 10,236 BTU/hr |
| 36/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| KHeavyHash | Algorithm | KHeavyHash |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer KS3
Bitmain Antminer KS5 (20Th)
Based on BTC price of $78,139 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitmain Antminer KS5 (20Th), which leads on 4 of 4 weighted factors (efficiency, hashrate, power consumption, price-performance). Its biggest concrete edge: 60% better efficiency (372 vs 150 J/TH). Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Stripped to the numbers, this is how far apart the Antminer KS3 and Bitmain Antminer KS5 (20Th) sit on each measurable spec:
- Bitmain Antminer KS5 (20Th) 113% more hashrate (9.4 vs 20.0 TH/s)
- Bitmain Antminer KS5 (20Th) 14% better power draw (3,500 vs 3,000 W)
- Bitmain Antminer KS5 (20Th) 60% better efficiency (372 vs 150 J/TH)
- Bitmain Antminer KS5 (20Th) 2% better weight (16.1 vs 15.8 kg)
- Antminer KS3 17% more heat output (11,942 vs 10,236 BTU/hr)
Cost & ROI Over Time
Sticker price versus what the miner actually earns back: the table below projects cumulative net profit at a $0.10/kWh electricity rate.
| Antminer KS3 | Metric | Bitmain Antminer KS5 (20Th) |
|---|---|---|
| $8,000 | Upfront cost (MSRP) | $799 |
| -$8.06 | Daily net profit | -$6.48 |
| -$10,943 | Net after 1 year | -$3,165 |
| -$13,885 | Net after 2 years | -$5,530 |
| -$16,828 | Net after 3 years | -$7,896 |
| 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 Antminer KS5 (20Th)150.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer KS3 or Bitmain Antminer KS5 (20Th) more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer KS5 (20Th) is more profitable at $-6.48/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 Antminer KS5 (20Th): 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 Antminer KS5 (20Th)?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
Antminer KS3 vs Bitmain Antminer KS5 (20Th): how much does the efficiency gap matter?
The Antminer KS3 runs at 372.3 J/TH while the Bitmain Antminer KS5 (20Th) runs at 150.0 J/TH — a difference of 222.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 60% better efficiency (372 vs 150 J/TH).