The MSI MAG B850 TOMAHAWK WIFI wins in 10 out of 14 comparable specs. Its biggest advantage is Max Memory (300% better).
PRO B660M-A WIFI DDR4 wins in 2 specs (PCIe x1 Slots: 100% better).
Recommendation
Choose MAG B850 TOMAHAWK WIFI if you want the best overall performance — especially max memory.
Choose PRO B660M-A WIFI DDR4 if pcie x1 slots matters more to you.
| Spec | MSIMAG B850 TOMAHAWK WIFI | MSIPRO B660M-A WIFI DDR4 |
|---|---|---|
| Platform | ||
| Socket | AM5 | LGA1700 |
| Chipset | B850 | B660 |
| Form Factor | ATX | Micro ATX |
| PCIe Gen | 5+25% | 4 |
| Memory | ||
| Memory Type | DDR5 | DDR4 |
| Memory Slots | 4+100% | 2 |
| Max Memory | 256 GB | |
| 64 GB |
| Max Memory Speed | 8,200 MHz+71% | 4,800 MHz |
| Expansion | ||
| M.2 Slots | 4+100% | 2 |
| SATA Ports | 4 | 4 |
| PCIe x16 Slots | 2+100% | 1 |
| PCIe x1 Slots | 1 | 2+100% |
| Connectivity | ||
| USB Type-C | 2+100% | 1 |
| USB Type-A | 8+60% | 5 |
| Wi-Fi | Wi-Fi 7+17% | Wi-Fi 6 |
| LAN | 2.5 GbE | 2.5 GbE |
| Audio | Realtek ALC4080 | Realtek ALC897 |
| Design | ||
| VRM Phases | 14+2+1+89% | 6+2+1 |
| Price | ||
| MSRP | $230 | $120−48% |
| Release Date | Jan 2025 | Jan 2022 |
