MSI MAG B850 Tomahawk Max WiFi
- Chipset:
- B850
- Socket:
- AM5
- Form Factor:
- ATX
- M.2 Slots:
- 4x M.2
- Network:
- WiFi 7 + 5G LAN
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Manufacturer: MSI Last updated: September 11, 2026
MSI MAG B850 Tomahawk Max WiFi (AM5/AMD B850/ATX/Four M.2 Slots/5G LAN/Wi-Fi 7) Review
The MAG B850 Tomahawk Max WiFi extends MSI's popular Tomahawk line to the B850 chipset, giving budget-to-mid-range Ryzen 9000/8000/7000 builders a PCIe 5.0 GPU slot, four M.2 sockets, and surprisingly fast 5G LAN for a board in this price tier.
MSI has not published an exact VRM phase count for this board, but the Tomahawk Max is rated by MSI and independent reviewers to run any current Ryzen 9000 non-X3D chip, including the 9700X, at stock clocks without VRM thermal issues. Four DDR5 UDIMM slots support up to 256GB total capacity, with overclocked speeds rated up to 8400+ MT/s on Ryzen 9000 series processors and down to 5600 MT/s baseline JEDEC support. The board offers a single PCIe 5.0 x16 slot from the CPU, plus a PCIe 3.0 x1 slot and a PCIe 4.0 x4 slot. Storage covers four M.2 slots, two PCIe 5.0 x4 from the CPU and two PCIe 4.0 from the chipset. A Realtek 8126VB 5G LAN controller provides unusually fast wired networking for this price tier, paired with Wi-Fi 7 rated up to 5.8Gbps across 2.4/5/6GHz bands. Audio uses a Realtek ALC4080 codec with 7.1-channel support. Compared to the Gigabyte B850 AORUS ELITE-P ICE in this catalog, the MAG B850 Tomahawk Max WiFi undercuts it on M.2 slot layout flexibility but wins on LAN speed, since 5G Ethernet is unusual at this price point.
Power Delivery and VRM Design
MSI has not published an exact VRM phase count for this board, but the Tomahawk Max is rated by MSI and independent reviewers to run any current Ryzen 9000 non-X3D chip, including the 9700X, at stock clocks without VRM thermal issues.
Memory Support
Four DDR5 UDIMM slots support up to 256GB total capacity, with overclocked speeds rated up to 8400+ MT/s on Ryzen 9000 series processors and down to 5600 MT/s baseline JEDEC support.
Expansion and Storage
The board offers a single PCIe 5.0 x16 slot from the CPU, plus a PCIe 3.0 x1 slot and a PCIe 4.0 x4 slot. Storage covers four M.2 slots, two PCIe 5.0 x4 from the CPU and two PCIe 4.0 from the chipset.
Connectivity
A Realtek 8126VB 5G LAN controller provides unusually fast wired networking for this price tier, paired with Wi-Fi 7 rated up to 5.8Gbps across 2.4/5/6GHz bands. Audio uses a Realtek ALC4080 codec with 7.1-channel support.
Comparison to Sibling Products
Compared to the Gigabyte B850 AORUS ELITE-P ICE in this catalog, the MAG B850 Tomahawk Max WiFi undercuts it on M.2 slot layout flexibility but wins on LAN speed, since 5G Ethernet is unusual at this price point.
Specifications
Platform and CPU compatibility
| Platform | AMD |
|---|---|
| Socket | AM5 |
| Socket | AMD Ryzen 9000 / 8000 / 7000 series |
| Chipset | B850 |
Platform
| Socket Type | AM5 |
|---|---|
| Form Factor | ATX |
Memory
| Memory Type | DDR5 |
|---|---|
| Memory Slots | 4 |
| Max Memory | 256 GB |
| Memory Type | 4x DDR5 UDIMM, up to 256GB, up to 8400+ MT/s (OC) |
Expansion & Connectivity
| M.2 Slots | 4 |
|---|---|
| PCIe 5.0 Support | Yes |
| Wi-Fi Onboard | Yes |
Network and audio
| Audio Codec | Realtek ALC4080, 7.1-channel |
|---|
| Model | MAG B850 Tomahawk Max WiFi |
|---|---|
| VRM | Digital VRM (phase count not officially disclosed by MSI) |
| Expansion | PCIe 5.0 x16 + PCIe 4.0 x4 + PCIe 3.0 x1 |
| Connectivity | USB-C, Frozr thermal design |
| Networking | Realtek 8126VB 5G LAN, Wi-Fi 7 |
| Special Features | 4x M.2 (2x Gen5, 2x Gen4) |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Budget-to-mid-range AM5 builds that want 5G LAN speed
- Builders who want a PCIe 5.0 GPU slot without paying X870 prices
Not for
- Overclockers who need a stronger VRM than a mainstream B850 board offers
- Builds needing five or more M.2 slots
FAQs
What are the key specifications of the MSI MAG B850 Tomahawk Max WiFi (AM5/AMD B850/ATX/Four M.2 Slots/5G LAN/Wi-Fi 7)?
The MSI MAG B850 Tomahawk Max WiFi (AM5/AMD B850/ATX/Four M.2 Slots/5G LAN/Wi-Fi 7) is a motherboard from MSI. Key specs: Socket AM5, Chipset B850, VRM Digital VRM (phase count not officially disclosed by MSI), Memory 4x DDR5 UDIMM, up to 256GB, up to 8400+ MT/s (OC), Expansion PCIe 5.0 x16 + PCIe 4.0 x4 + PCIe 3.0 x1.
Will the MSI MAG B850 Tomahawk Max WiFi (AM5/AMD B850/ATX/Four M.2 Slots/5G LAN/Wi-Fi 7) work with my current setup?
The MSI MAG B850 Tomahawk Max WiFi (AM5/AMD B850/ATX/Four M.2 Slots/5G LAN/Wi-Fi 7) lists Socket is AM5. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the MSI MAG B850 Tomahawk Max WiFi (AM5/AMD B850/ATX/Four M.2 Slots/5G LAN/Wi-Fi 7) best suited to?
It suits budget-to-mid-range am5 builds that want 5g lan speed, builders who want a pcie 5.0 gpu slot without paying x870 prices.
What are the drawbacks of the MSI MAG B850 Tomahawk Max WiFi (AM5/AMD B850/ATX/Four M.2 Slots/5G LAN/Wi-Fi 7)?
It is a poor fit for overclockers who need a stronger vrm than a mainstream b850 board offers, builds needing five or more m.2 slots.
Compare and read more
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