Antminer S21j XP Hyd (495Th) vs WhatsMiner M66S
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 5940 W | 5513 W | |
| Release | 2026-03 | 2023-11 | |
| Best opportunity |  BTCNetwork | BTCNetwork | |
| Profit/day | $9.47 | $1.98 | |
| Score | 76/100 | 69/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | Antminer S21j XP Hyd (495Th) | WhatsMiner M66S | |
|---|---|---|---|
| SHA-256 | 495 TH/s5940 W · 83.33 GH/s/W | 298 TH/s5513 W · 54.05 GH/s/W |