F1-Ultra vs WhatsMiner M66S
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | FPGA | ASIC | |
| Power | 700 W | 5513 W | |
| Release | 2023-11 | ||
| Best opportunity |  CKBNetwork |  BTCNetwork | |
| Profit/day | $-2.18 | $1.81 | |
| Score | 49/100 | 69/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.