Antminer S21+ vs MicroBT WhatsMiner M73
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21+ | Specification | MicroBT WhatsMiner M73 |
|---|---|---|
| 216.0 TH/s | Taux de hachage | 512.0 TH/s |
| 3,564 W | Consommation électrique | 7,424 W |
| 16.5 J/TH | Efficiency | 14.5 J/TH |
| 75 dB | Niveau de bruit | 75 dB |
| 15.0 kg | Weight | 27.5 kg |
| 12,160 BTU/hr | BTU Output | 25,331 BTU/hr |
| 30/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Antminer S21+
MicroBT WhatsMiner M73
Based on BTC price of $78,179 and current network difficulty as of May 17, 2026. Actual results vary.
Verdict
Weighing six performance factors, the MicroBT WhatsMiner M73 comes out ahead — it takes 2 of 3 (efficacité, hashrate). Its biggest concrete edge: 137% more hashrate (216 vs 512 TH/s). That said, the Antminer S21+ isn't beaten everywhere — it still wins consommation électrique. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
The Antminer S21+ and MicroBT WhatsMiner M73 diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- MicroBT WhatsMiner M73 137% more hashrate (216 vs 512 TH/s)
- Antminer S21+ 52% better power draw (3,564 vs 7,424 W)
- MicroBT WhatsMiner M73 12% better efficacité (16.5 vs 14.5 J/TH)
- Antminer S21+ 45% better weight (15.0 vs 27.5 kg)
- MicroBT WhatsMiner M73 108% more heat output (12,160 vs 25,331 BTU/hr)
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 S21+ | Metric | MicroBT WhatsMiner M73 |
|---|---|---|
| $6,500 | Upfront cost (MSRP) | — |
| -$0.78 | Daily net profit | $0.60 |
| -$6,786 | Net after 1 year | +$220 |
| -$7,071 | Net after 2 years | +$440 |
| -$7,357 | Net after 3 years | +$660 |
| 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
MicroBT WhatsMiner M73$1.39/day higher profit at current rates.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
MicroBT WhatsMiner M7314.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Antminer S21+ or the MicroBT WhatsMiner M73?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M73 is more profitable at $0.60/day compared to $-0.78/day for the Antminer S21+. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer S21+ vs MicroBT WhatsMiner M73: 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 Antminer S21+ or the MicroBT WhatsMiner M73?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
What is the efficiency difference between Antminer S21+ and MicroBT WhatsMiner M73?
The Antminer S21+ runs at 16.5 J/TH while the MicroBT WhatsMiner M73 runs at 14.5 J/TH — a difference of 2.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 12% better efficacité (16.5 vs 14.5 J/TH).