Antminer KS3 vs Antminer KS5 Pro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer KS3 | Specification | Antminer KS5 Pro |
|---|---|---|
| 9.4 TH/s | Hashrate | 21.0 TH/s |
| 3,500 W | Power Consumption | 3,150 W |
| 372.3 J/TH | Efficiency | 150.0 J/TH |
| 75 dB | Noise Level | 75 dB |
| 16.1 kg | Weight | 14.5 kg |
| 11,942 BTU/hr | BTU Output | 10,748 BTU/hr |
| 36/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| KHeavyHash | Algorithm | KHeavyHash |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer KS3
Antminer KS5 Pro
Based on BTC price of $78,139 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Antminer KS5 Pro edges it: 4 of 4 factors go its way (efficiency, hashrate, power consumption, price-performance). Its biggest concrete edge: 60% better efficiency (372 vs 150 J/TH). Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
The Antminer KS3 and Antminer KS5 Pro diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Antminer KS5 Pro 123% more hashrate (9.4 vs 21.0 TH/s)
- Antminer KS5 Pro 10% better power draw (3,500 vs 3,150 W)
- Antminer KS5 Pro 60% better efficiency (372 vs 150 J/TH)
- Antminer KS5 Pro 10% better weight (16.1 vs 14.5 kg)
- Antminer KS3 11% more heat output (11,942 vs 10,748 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 | Antminer KS5 Pro |
|---|---|---|
| $8,000 | Upfront cost (MSRP) | $15,000 |
| -$8.06 | Daily net profit | -$6.80 |
| -$10,943 | Net after 1 year | -$17,484 |
| -$13,885 | Net after 2 years | -$19,968 |
| -$16,828 | Net after 3 years | -$22,451 |
| 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
Antminer KS5 Pro150.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer KS3 or Antminer KS5 Pro more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer KS5 Pro is more profitable at $-6.80/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.
Which is quieter, the Antminer KS3 or Antminer KS5 Pro?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
For mining at home, should I pick the Antminer KS3 or the Antminer KS5 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 Antminer KS5 Pro on J/TH?
The Antminer KS3 runs at 372.3 J/TH while the Antminer KS5 Pro 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).