ASRock B850M Rock WiFi AMD motherboard

Micro-ATX AM5 Board with DDR5 8200 Support

The ASRock B850M Rock WiFi is a Micro-ATX motherboard built for AMD Socket AM5 processors. It supports Ryzen 9000, 8000 and 7000 series CPUs with a 6+1+1 Dr.MOS power phase design. Two DDR5 slots handle up to 128GB at 8200 MT/s with EXPO or XMP profiles.

Best for Compact Builds Needing PCIe 5.0 Storage

This board suits builders who want a smaller case without losing a PCIe 5.0 x4 M.2 slot or a PCIe 5.0 x16 graphics slot. It also provides 2.5GbE LAN, Wi-Fi, Bluetooth and 7.1 audio. Users needing four DIMM slots, more PCIe 4.0 x4 M.2 sockets or additional USB 3.2 Gen 2 ports should look at full-size ATX alternatives.

Deciding Factor: Two DDR5 Slots Max 128GB at 8200

The memory subsystem is the key constraint. Only two 288-pin slots are available, limiting total capacity to 128GB in dual-channel mode. If your workload demands four modules or higher aggregate bandwidth, this board will not fit; otherwise the PCIe 5.0 M.2 and x16 slots deliver current-generation speed in a compact layout.