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MSI B850M GAMING WIFI mATX motherboard dark PCB with silver heatsinks and rear I/O panel

MSI

MSI B850M GAMING WIFI AMD Motherboard

SKU CH-01B4-E678K

An mATX AM5 board with Wi-Fi 7, 5G LAN and four DDR5 slots supporting up to 256 GB for Ryzen 7000, 8000 and 9000 series CPUs

  • CPU TypeRyzen Series
  • Wi-Fi 7 gives low-latency wireless gaming
  • Realtek 8126 5G LAN provides fast wired throughput
  • Four DDR5 slots support up to 256 GB memory
  • mATX 243.84 mm board fits compact builds

Built for AMD Ryzen 9000 series gaming

The MSI B850M GAMING WIFI motherboard uses the AM5 socket and B850 chipset to support Ryzen 9000, 8000 and 7000 series desktop processors. It fits a micro-ATX form factor measuring 243.84mm by 243.84mm and provides four DDR5 UDIMM slots with a maximum memory capacity of 256GB. The board includes a Realtek 8126 5G LAN port and a Wi-Fi 7 wireless solution for high-speed networking.

Sustained 24/7 gaming optimisation

Designed for continuous operation, the platform is optimised for non-stop gaming sessions with AMD Ryzen 9000 series CPUs. The PCIe 5.0 M.2 interface delivers high bandwidth for storage during extended workloads. Exclusive EZ DIY features simplify assembly and maintenance for long-term reliability. Builders needing more than four memory slots or a larger ATX layout should consider alternative form factors.

Highlights

  • Wi-Fi 7 gives low-latency wireless gaming
  • Realtek 8126 5G LAN provides fast wired throughput
  • Four DDR5 slots support up to 256 GB memory
  • mATX 243.84 mm board fits compact builds

Specifications

BrandMSI
ModelB850M GAMING WIFI
CPU TypeRyzen Series

Questions about this item

How much heat and noise should I expect from the 5G LAN and Wi-Fi 7 during 24/7 gaming sessions?

The Realtek 8126 5G LAN and Wi-Fi 7 controllers are integrated on the mATX board, so they add minimal heat and no audible fan noise during continuous operation.

Which DDR5 memory kit do I need to populate the four UDIMM slots and reach the 256 GB maximum capacity?

Install four 64 GB DDR5 UDIMM modules to fill all four slots and achieve the 256 GB limit supported by the B850M GAMING WIFI.

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