Whatsminer M21 vs WhatsMiner M66S++
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 1860 W | 5518 W | |
| Release | 2019-08 | 2024-12 | |
| Best opportunity |  BTCNetwork | BTCNetwork | |
| Profit/day | $-2.51 | $1.58 | |
| Score | 49/100 | 68/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | Whatsminer M21 | WhatsMiner M66S++ | |
|---|---|---|---|
| SHA-256 | 31 TH/s1860 W · 16.67 GH/s/W | 356 TH/s5518 W · 64.52 GH/s/W |