Bitmain Antminer S9 Hydro (18Th) vs MicroBT Whatsminer M20S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S9 Hydro (18Th) | Specification | MicroBT Whatsminer M20S |
|---|---|---|
| 18.0 TH/s | Hashrate | 68.0 TH/s |
| 1,728 W | Power Consumption | 3,360 W |
| 96.0 J/TH | Efficiency | 49.4 J/TH |
| — | Noise Level | — |
| 5,150.0 kg | Weight | 12,500.0 kg |
| 5,896 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 S9 Hydro (18Th)
MicroBT Whatsminer M20S
Based on BTC price of $79,027 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the MicroBT Whatsminer M20S, which leads on 2 of 4 weighted factors (efficiency, hashrate). Where it pulls away hardest is 278% more hashrate (18.0 vs 68.0 TH/s). The Bitmain Antminer S9 Hydro (18Th) holds the edge in power consumption and home mining score. 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 Bitmain Antminer S9 Hydro (18Th) and MicroBT Whatsminer M20S sit on each measurable spec:
- MicroBT Whatsminer M20S 278% more hashrate (18.0 vs 68.0 TH/s)
- Bitmain Antminer S9 Hydro (18Th) 49% better power draw (1,728 vs 3,360 W)
- MicroBT Whatsminer M20S 49% better efficiency (96.0 vs 49.4 J/TH)
- Bitmain Antminer S9 Hydro (18Th) 59% better weight (5,150 vs 12,500 kg)
- MicroBT Whatsminer M20S 94% more heat output (5,896 vs 11,464 BTU/hr)
- Bitmain Antminer S9 Hydro (18Th) 27% more home mining score (28.0 vs 22.0)
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.
| Bitmain Antminer S9 Hydro (18Th) | Metric | MicroBT Whatsminer M20S |
|---|---|---|
| — | Upfront cost (MSRP) | $66 |
| -$3.49 | Daily net profit | -$5.59 |
| -$1,275 | Net after 1 year | -$2,107 |
| -$2,550 | Net after 2 years | -$4,147 |
| -$3,824 | Net after 3 years | -$6,188 |
| — | 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 S9 Hydro (18Th)Score: 28/100. 0 dB noise level.
Best for Efficiency
MicroBT Whatsminer M20S49.4 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S9 Hydro (18Th) or MicroBT Whatsminer M20S more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S9 Hydro (18Th) is more profitable at $-3.49/day compared to $-5.59/day for the MicroBT Whatsminer M20S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer S9 Hydro (18Th) or the MicroBT Whatsminer M20S better for noise-sensitive spaces?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
For mining at home, should I pick the Bitmain Antminer S9 Hydro (18Th) or the MicroBT Whatsminer M20S?
The Bitmain Antminer S9 Hydro (18Th) 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.
Bitmain Antminer S9 Hydro (18Th) vs MicroBT Whatsminer M20S: how much does the efficiency gap matter?
The Bitmain Antminer S9 Hydro (18Th) runs at 96.0 J/TH while the MicroBT Whatsminer M20S runs at 49.4 J/TH — a difference of 46.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 49% better efficiency (96.0 vs 49.4 J/TH).