Antminer KS3 vs Bitmain Antminer S3
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer KS3 | Specification | Bitmain Antminer S3 |
|---|---|---|
| 9.4 TH/s | Hashrate | 478.0 GH/s |
| 3,500 W | Power Consumption | 366 W |
| 372.3 J/TH | Efficiency | 765.7 J/TH |
| 75 dB | Noise Level | — |
| 16.1 kg | Weight | 5,200.0 kg |
| 11,942 BTU/hr | BTU Output | 1,249 BTU/hr |
| 36/100 | Home Mining Score | 34/100 |
| — | Release Year | — |
| KHeavyHash | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer KS3
Bitmain Antminer S3
Based on BTC price of $79,032 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Antminer KS3 comes out ahead — it takes 4 of 5 (efficiency, hashrate, home mining score, noise level). Where it pulls away hardest is 1867% more hashrate (9.4 vs 0.5 TH/s). That said, the Bitmain Antminer S3 isn't beaten everywhere — it still wins power consumption. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Here is every spec where the Antminer KS3 and Bitmain Antminer S3 actually differ, with the gap quantified:
- Antminer KS3 1867% more hashrate (9.4 vs 0.5 TH/s)
- Bitmain Antminer S3 90% better power draw (3,500 vs 366 W)
- Antminer KS3 51% better efficiency (372 vs 766 J/TH)
- Antminer KS3 100% better weight (16.1 vs 5,200.0 kg)
- Antminer KS3 856% more heat output (11,942 vs 1,249 BTU/hr)
- Antminer KS3 6% more home mining score (36.0 vs 34.0)
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 KS3 | Metric | Bitmain Antminer S3 |
|---|---|---|
| $8,000 | Upfront cost (MSRP) | — |
| -$8.06 | Daily net profit | -$0.86 |
| -$10,941 | Net after 1 year | -$314 |
| -$13,882 | Net after 2 years | -$629 |
| -$16,824 | Net after 3 years | -$943 |
| Does not pay back at current rates (negative daily profit) | Payback period | — |
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 KS3Score: 36/100. 75 dB noise level.
Best for Efficiency
Antminer KS3372.3 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Antminer KS3 or the Bitmain Antminer S3?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S3 is more profitable at $-0.86/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 S3: which runs at a lower noise level?
The Antminer KS3 is quieter at 75 dB compared to the Bitmain Antminer S3 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer KS3 or Bitmain Antminer S3?
The Antminer KS3 scores 36/100 on our Home Mining Score (vs 34/100 for the Bitmain Antminer S3). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the Antminer KS3 and Bitmain Antminer S3 on J/TH?
The Antminer KS3 runs at 372.3 J/TH while the Bitmain Antminer S3 runs at 765.7 J/TH — a difference of 393.4 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 51% better efficiency (372 vs 766 J/TH).