Bitmain Antminer S15 (28Th) vs MicroBT Whatsminer M20S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S15 (28Th) | Specification | MicroBT Whatsminer M20S |
|---|---|---|
| 28.0 TH/s | Hashrate | 68.0 TH/s |
| 1,596 W | Power Consumption | 3,360 W |
| 57.0 J/TH | Efficiency | 49.4 J/TH |
| — | Noise Level | — |
| 7,000.0 kg | Weight | 12,500.0 kg |
| 5,446 BTU/hr | BTU Output | 11,464 BTU/hr |
| 28/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S15 (28Th)
MicroBT Whatsminer M20S
Based on BTC price of $77,884 and current network difficulty as of May 21, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the MicroBT Whatsminer M20S wins on 3 of 5 factors (efficiency, hashrate, price-performance). The standout gap is 143% more hashrate (28.0 vs 68.0 TH/s) in the MicroBT Whatsminer M20S's favour. That said, the Bitmain Antminer S15 (28Th) isn't beaten everywhere — it still wins power consumption and home mining score. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
The Bitmain Antminer S15 (28Th) and MicroBT Whatsminer M20S diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- MicroBT Whatsminer M20S 143% more hashrate (28.0 vs 68.0 TH/s)
- Bitmain Antminer S15 (28Th) 53% better power draw (1,596 vs 3,360 W)
- MicroBT Whatsminer M20S 13% better efficiency (57.0 vs 49.4 J/TH)
- Bitmain Antminer S15 (28Th) 44% better weight (7,000 vs 12,500 kg)
- MicroBT Whatsminer M20S 111% more heat output (5,446 vs 11,464 BTU/hr)
- Bitmain Antminer S15 (28Th) 27% more home mining score (28.0 vs 22.0)
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.
| Bitmain Antminer S15 (28Th) | Metric | MicroBT Whatsminer M20S |
|---|---|---|
| $5,599 | Upfront cost (MSRP) | $66 |
| -$2.83 | Daily net profit | -$5.63 |
| -$6,631 | Net after 1 year | -$2,120 |
| -$7,663 | Net after 2 years | -$4,174 |
| -$8,694 | Net after 3 years | -$6,227 |
| 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
Bitmain Antminer S15 (28Th)Score: 28/100. 0 dB noise level.
Best for Efficiency
MicroBT Whatsminer M20S49.4 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer S15 (28Th) vs MicroBT Whatsminer M20S: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S15 (28Th) is more profitable at $-2.83/day compared to $-5.63/day for the MicroBT Whatsminer M20S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S15 (28Th) or MicroBT Whatsminer M20S?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Bitmain Antminer S15 (28Th) or MicroBT Whatsminer M20S?
The Bitmain Antminer S15 (28Th) scores 28/100 on our Home Mining Score (vs 22/100 for the MicroBT Whatsminer M20S). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
What is the efficiency difference between Bitmain Antminer S15 (28Th) and MicroBT Whatsminer M20S?
The Bitmain Antminer S15 (28Th) runs at 57.0 J/TH while the MicroBT Whatsminer M20S runs at 49.4 J/TH — a difference of 7.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 13% better efficiency (57.0 vs 49.4 J/TH).