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The MSI B840 Gaming Plus WiFi is an AM5 motherboard built on AMD's B840 chipset, aimed at Ryzen 9000, 8000 and 7000 CPUs. It pairs a 7-phase direct CPU power design with Frozr Guard cooling, four DDR5 slots rated for 8000+ MT/s overclocking, and a PCIe 4.0 x16 slot with Steel Armor. Two M.2 Gen4 x4 slots, Wi-Fi 7, Bluetooth 5.4 and 2.5G LAN cover storage and networking. It sits below X870 boards on expansion: no PCIe 5.0 graphics or M.2, and fewer USB ports, but it covers the essentials for a gaming build. Reviewers of B840 boards generally treat them as value picks for mid-range Ryzen builds rather than enthusiast platforms.
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Reception of B840 boards centers on their value for mid-range Ryzen builds. Owners praise the built-in Wi-Fi 7, the tool-free M.2 shield and stable memory overclocking, while critics point to the lack of PCIe 5.0 and the modest slot count as the main compromises.
The MSI B840 Gaming Plus WiFi is a motherboard built on the AMD B840 chipset with an AM5 socket. It supports Ryzen 9000, 8000 and 7000 processors. CPU power comes from a Direct 7-phase design (P-PAK) with Core Boost architecture and an 8-pin CPU power connector.
Cooling includes 7W/mK MOSFET thermal pads, extra choke thermal pads, an extended heatsink and a chipset heatsink. The primary M.2 slot has an EZ M.2 Shield Frozr II to help prevent thermal throttling. The board uses a 6-layer PCB with 2oz of thickened copper for improved signal clarity.
It has four DDR5 DIMM slots, one PCIe 4.0 x16 slot with Steel Armor, and two M.2 Gen4 x4 slots. Networking is Wi-Fi 7 with Bluetooth 5.4 and 2.5Gbps LAN. The board supports 4K/60Hz display output and 7.1 HD audio with Audio Boost.
