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MSI B850M GAMING PLUS WIFI motherboard, mATX form factor, dark PCB with silver heatsinks

MSI

MSI B850M GAMING PLUS WIFI AMD motherboard

SKU CH-CX0P-XESQN

A micro-ATX AMD motherboard with Wi-Fi 7, 5G LAN, four DDR5 slots supporting up to 256 GB and Ryzen 9000, 8000 and 7000 series CPUs

  • ProcessorRyzen Series
  • Supports Ryzen 9000, 8000 and 7000 series processors for broad CPU choice
  • Wi-Fi 7 wireless connectivity for high-speed networking
  • Realtek 8126 5G LAN port delivers fast wired throughput
  • Four DDR5 UDIMM slots allow up to 256 GB memory capacity
  • mATX form factor at 243.84 mm square fits compact builds

AMD B850 mATX motherboard for Ryzen 7000.

The MSI B850M GAMING PLUS WIFI is a micro-ATX board built around the AMD B850 chipset and AM5 socket. It supports Ryzen 7000, 8000 and 9000 series desktop processors, including models such as the 9600X, 9700X, 9800X3D and 9850X3D. The board targets gamers and builders who want current-generation AMD performance in a compact 243.84mm square form factor.

Four DDR5 slots and Realtek 8126 5G LAN

Memory capacity reaches 256 GB across four DDR5 UDIMM slots, giving headroom for heavy multitasking or content creation. Networking uses a Realtek 8126 controller for 5 Gbps wired Ethernet alongside a Wi-Fi 7 solution for high-throughput wireless. The mATX layout fits smaller cases while retaining standard mounting points and rear I/O alignment.

Thermals, noise and power draw in normal use

The B850 chipset runs cool under typical loads, so active chipset cooling is not required and system noise stays low. Power delivery is sized for the supported Ryzen 9000, 8000 and 7000 series CPUs at stock settings, drawing only what the processor and memory demand. Windows 11 64-bit is the supported operating environment.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $254.99
Typical for this category: the median of 1,906 items is $224.49.

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Specifications

Product
Brand nameMSI
Model nameB850M GAMING PLUS WIFI
Processor
ProcessorRyzen Series

Questions about this item

What is the Realtek 8126 LAN port's rated speed?

The board includes a Realtek 8126 controller providing a 5G Ethernet port for wired networking.

What are the physical dimensions for case clearance?

The mATX board measures 243.84mm by 243.84mm, so verify your chassis supports that footprint.

How is the Wi-Fi 7 module attached to the board?

The Wi-Fi 7 solution is integrated onboard; install the supplied external antennas on the rear I/O panel before use.

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