Bitmain Antminer S9 SE (16Th) vs MicroBT Whatsminer M21
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S9 SE (16Th) | Specification | MicroBT Whatsminer M21 |
|---|---|---|
| 16.0 TH/s | Hashrate | 31.0 TH/s |
| 1,280 W | Power Consumption | 1,860 W |
| 80.0 J/TH | Efficiency | 60.0 J/TH |
| — | Noise Level | — |
| 4,560.0 kg | Weight | 7,150.0 kg |
| 4,367 BTU/hr | BTU Output | 6,346 BTU/hr |
| 31/100 | Home Mining Score | 28/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S9 SE (16Th)
MicroBT Whatsminer M21
Based on BTC price of $79,113 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the MicroBT Whatsminer M21, which leads on 2 of 4 weighted factors (efficiency, hashrate). Its biggest concrete edge: 94% more hashrate (16.0 vs 31.0 TH/s). The Bitmain Antminer S9 SE (16Th) claws back ground on power consumption and home mining score. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
The Bitmain Antminer S9 SE (16Th) and MicroBT Whatsminer M21 diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- MicroBT Whatsminer M21 94% more hashrate (16.0 vs 31.0 TH/s)
- Bitmain Antminer S9 SE (16Th) 31% better power draw (1,280 vs 1,860 W)
- MicroBT Whatsminer M21 25% better efficiency (80.0 vs 60.0 J/TH)
- Bitmain Antminer S9 SE (16Th) 36% better weight (4,560 vs 7,150 kg)
- MicroBT Whatsminer M21 45% more heat output (4,367 vs 6,346 BTU/hr)
- Bitmain Antminer S9 SE (16Th) 11% more home mining score (31.0 vs 28.0)
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
Bitmain Antminer S9 SE (16Th)Score: 31/100. 0 dB noise level.
Best for Efficiency
MicroBT Whatsminer M2160.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S9 SE (16Th) or MicroBT Whatsminer M21 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S9 SE (16Th) is more profitable at $-2.49/day compared to $-3.34/day for the MicroBT Whatsminer M21. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Bitmain Antminer S9 SE (16Th) vs MicroBT Whatsminer M21: which runs at a lower noise level?
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 SE (16Th) or the MicroBT Whatsminer M21?
The Bitmain Antminer S9 SE (16Th) scores 31/100 on our Home Mining Score (vs 28/100 for the MicroBT Whatsminer M21). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer S9 SE (16Th) vs MicroBT Whatsminer M21: how much does the efficiency gap matter?
The Bitmain Antminer S9 SE (16Th) runs at 80.0 J/TH while the MicroBT Whatsminer M21 runs at 60.0 J/TH — a difference of 20.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 25% better efficiency (80.0 vs 60.0 J/TH).