Choosing between these gaming motherboards is a platform decision before it is a price decision. For shoppers building around cpus, motherboards & memory, the key question is which board matches the desktop CPU and memory plan already on your list. These two MSI ATX boards share gaming-oriented positioning, but their stated processor support and RAM generations lead to different build routes.
Quick verdict
Start with the socket and memory family, because the two boards are designed around different processor and RAM plans. Use condition and listed price as tie-breakers after that. The MSI MAG B550 Tomahawk MAX WiFi is the fit for one stated build route, while the MSI B850 GAMING PLUS WIFI6E fits another. There is no universal winner here: the right choice depends on the CPU generation and memory type your build requires.
Listed comparison
| Detail | MSI MAG B550 Tomahawk MAX WiFi | MSI B850 GAMING PLUS WIFI6E |
|---|---|---|
| Listed price | USD 167.99 | USD 134.99 |
| Condition | New | Open box |
| Form factor | ATX | ATX |
| Named M.2 storage detail | PCIe 4.0 and Lightning Gen 4 x4 M.2 with M.2 Shield Frozr | 1x M.2 Gen5 x4 and 1x M.2 Gen4 x4, both with M.2 Shield Frozr |
The listed-price difference is USD 33, with the B850 GAMING PLUS WIFI6E at the lower figure.
Where each motherboard wins
MSI MAG B550 Tomahawk MAX WiFi wins for stated AM4 and DDR4 builds
Choose the B550 when your planned desktop CPU is from the listed AMD Ryzen 5000, 5000 G-Series, 4000G-Series, or 3000 Series families and you intend to use DDR4 memory. Its AM4 and DDR4 wording makes that route clear. This is the sensible match when those are the parts you are already building around, rather than a reason to change to a different CPU or RAM generation.
MSI B850 GAMING PLUS WIFI6E wins for stated AM5 and DDR5 builds
The B850 is the direct choice for a build centered on the listed AMD Ryzen 9000, 8000, or 7000 Series processors with DDR5 memory. Its AM5 socket and four DDR5 DIMM slots point it toward that combination. Pick it when that processor family and memory generation are the target for your PC, not simply because its model number is different.
Product notes
MSI MAG B550 Tomahawk MAX WiFi Gaming Motherboard
The B550 has a concrete draw beyond its socket choice: it names 2.5G LAN with LAN Manager alongside an AMD Wi-Fi 6E solution. Turbo USB 3.2 Gen 2 and an extended heatsink design are also called out, giving shoppers several specified connectivity and board-design details to weigh. The trade-off is its USD 167.99 listed price, the higher figure in this matchup. Its new condition is another clearly stated point for shoppers who prefer that condition. Choose the B550 when its named networking and connection features matter to your plan and its listed price fits the rest of the build.
MSI B850 GAMING PLUS WIFI6E AM5 AMD B850 SATA DDR5 Motherboard
The B850 GAMING PLUS WIFI6E is compelling when its specifically described power and expansion layout is relevant to your build. It lists a 12-duet rail power system with dual 8-pin CPU power connectors, plus EZ M.2 clips and a PCIe 4.0 x16 slot with Steel Armor. Those are concrete configuration details that may help distinguish it for a shopper comparing board layouts. The limitation is its listed open-box condition, which may not suit every purchase preference. Choose this board when its stated AM5 processor route and named power layout align with the components you intend to use.
Final choice by use case
Pick the MSI MAG B550 Tomahawk MAX WiFi if your build calls for the listed Ryzen 5000, 5000 G-Series, 4000G-Series, or 3000 Series processors with DDR4 memory. Pick the MSI B850 GAMING PLUS WIFI6E for the listed Ryzen 9000, 8000, or 7000 Series processors with AM5 and DDR5 memory.
