S21 Hyd vs WhatsMiner M66S
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 5360 W | 5513 W | |
| Release | 2024-02 | 2023-11 | |
| Best opportunity |  BTCNetwork | BTCNetwork | |
| Profit/day | $3.55 | $1.72 | |
| Score | 71/100 | 68/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | S21 Hyd | WhatsMiner M66S | |
|---|---|---|---|
| SHA-256 | 335 TH/s5360 W · 62.5 GH/s/W | 298 TH/s5513 W · 54.05 GH/s/W |