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MSI MAG B850M Mortar WiFi Motherboard, mATX vs MSI MAG X870E Tomahawk MAX WiFi PZ Motherboard, ATX

Updated August 2026 — MSI MAG B850M Mortar WiFi Motherboard, mATX wins on size, MSI MAG X870E Tomahawk MAX WiFi PZ Motherboard, ATX wins on power and price.

The MSI MAG B850M Mortar WiFi offers great value for budget-conscious gamers, while the MSI MAG X870E Tomahawk MAX WiFi PZ excels in performance and features for enthusiasts.

Why MSI MAG B850M Mortar WiFi Motherboard, mATX is better

Price

B850M is $100 cheaper

Size

B850M's mATX form factor is more compact

Value

B850M offers solid performance for budget builds

Why MSI MAG X870E Tomahawk MAX WiFi PZ Motherboard, ATX is better

Power

X870E has a stronger 14 Duet Rail Power Phase

Cooling

X870E includes extra choke thermal pads

Connectivity

X870E features USB4 Type-C 40Gbps

Overall score

MSI MAG B850M Mortar WiFi Motherboard, mATX
75
MSI MAG X870E Tomahawk MAX WiFi PZ Motherboard, ATX
85

Specifications

SpecMSI MAG B850M Mortar WiFi Motherboard, mATXMSI MAG X870E Tomahawk MAX WiFi PZ Motherboard, ATX
DDR5 Speed8200+ MT/s8400+ MT/s
M.2 Slots34
Wi-FiWi-Fi 7Wi-Fi 7
LAN5Gbps5Gbps
Form FactormATXATX

Dimension comparison

MSI MAG B850M Mortar WiFi Motherboard, mATXMSI MAG X870E Tomahawk MAX WiFi PZ Motherboard, ATX

Overview of the MSI MAG B850M Mortar WiFi and MSI MAG X870E Tomahawk MAX WiFi PZ

The MSI MAG B850M Mortar WiFi is priced at $219.99, making it about 31% cheaper than the MSI MAG X870E Tomahawk MAX WiFi PZ, which retails for $319.99. Both motherboards support the latest AMD Ryzen 9000, 8000, and 7000 processors and are built with high-performance features tailored for gamers and power users. However, they cater to slightly different user needs based on their specifications and features.

Design and Build Quality

Both motherboards are designed for durability and high performance. The MSI MAG B850M Mortar WiFi employs a 12 Duet Rail Power System (60A, SPS) VRM, while the X870E Tomahawk MAX features a more robust 14 Duet Rail Power Phase with 80A SPS, indicating a potentially better power delivery for overclocking and stability. The B850M's mATX form factor is compact, suitable for smaller cases, whereas the X870E's ATX design allows for more expansion options. Both models boast a solid build with 2oz thickened copper layers and PCIe Steel Armor II to protect the primary graphics card slot.

Performance Capabilities

In terms of performance, the MSI MAG B850M Mortar WiFi supports DDR5 memory speeds of up to 8200+ MT/s (OC), while the X870E Tomahawk MAX provides slightly lower DDR5 memory speeds of 8400+ MT/s (OC). Both motherboards feature a PCIe 5.0 x16 slot that allows for high-speed graphics card integration. The greater power phase design in the X870E suggests it may handle extreme performance better than the B850M, particularly for users engaging in high-intensity gaming or content creation tasks.

Cooling Solutions

Cooling is critical for sustaining performance under load, and both motherboards implement advanced cooling features. The B850M is equipped with a comprehensive thermal solution, including MOSFET thermal pads and an Extended Heatsink, ensuring efficient heat dissipation. The X870E Tomahawk MAX also includes similar cooling technologies but adds extra choke thermal pads and a more extensive cooling setup, which might provide an edge in prolonged heavy usage scenarios. This could be particularly beneficial for gamers who push their systems to the limit.

Connectivity Options

Connectivity is a strong point for both motherboards. The MSI MAG B850M Mortar WiFi includes Wi-Fi 7 and Bluetooth 5.4, along with 5Gbps LAN, which ensures fast and reliable networking. In comparison, the X870E Tomahawk MAX not only features Wi-Fi 7 and Bluetooth 5.4 but also introduces a USB4 Type-C port capable of 40Gbps, offering superior data transfer rates and compatibility with newer devices. For users who require extensive connectivity options, the X870E's additional ports may present a significant advantage.

Storage Capabilities

Storage options vary slightly between the two motherboards. The MSI MAG B850M Mortar WiFi is equipped with three M.2 slots: two M.2 Gen5 x4 128Gbps slots and one M.2 Gen4 x2 32Gbps slot. In contrast, the X870E Tomahawk MAX provides four M.2 connectors, which include two Gen5 x4 128Gbps slots and two Gen4 x4 64Gbps slots. This increased flexibility allows for more storage solutions on the X870E, catering to users with larger libraries of games or data-intensive applications.

Target Audience

The MSI MAG B850M Mortar WiFi is ideal for gamers who are looking for a solid foundation at a lower price point, making it an attractive option for budget-conscious builds. On the other hand, the MSI MAG X870E Tomahawk MAX WiFi PZ targets enthusiasts and professionals needing enhanced performance and more advanced features, justifying its higher price tag. Users seeking the best in terms of power delivery, cooling, and connectivity would likely lean towards the X870E, while those prioritizing value may find the B850M more appealing.

Which should you buy?

In conclusion, the choice between the MSI MAG B850M Mortar WiFi and the MSI MAG X870E Tomahawk MAX WiFi PZ largely depends on your specific needs and budget. If you're looking for a more budget-friendly option that still delivers excellent performance, the B850M is a fantastic choice at $219.99. However, for those who require the latest features, superior power delivery, and extensive connectivity options, the X870E at $319.99 is worth the investment. Ultimately, both motherboards cater to different segments of the market, ensuring that users can find a product that fits their requirements.