MSI B840M Gaming Wifi6e DDR5 AMD Motherboard

The MSI B840M Gaming WiFi 6E is a Micro-ATX motherboard built on the AMD B840 chipset, designed for AMD AM5 socket processors including the Ryzen 9000, 8000, and 7000 series desktop families. Its compact 243.84 mm × 243.84 mm PCB integrates a robust 7+2+1 P-PAK direct power design backed by an 8-pin CPU power connector, MSI Core Boost technology, and a 6-layer PCB with 2 oz thickened copper layers to sustain demanding compute and gaming workloads around the clock. Memory support spans four DDR5 UDIMM slots with a maximum capacity of 256 GB. Speeds range from 4800–5600 MT/s at JEDEC to up to 8000+ MT/s under overclocking with AMD EXPO profiles enabled. The board supports dual-channel operation, non-ECC unbuffered modules, and CUDIMM in clock-driver bypass mode. Storage flexibility comes via two M.2 slots—both sourced from the CPU and running at up to PCIe 4.0 x4, accommodating 2280 and 2260 form factors—alongside four SATA 6 Gb/s ports. RAID 0, 1, and 10 are supported for SATA devices. Connectivity is handled by a Realtek 8125D 2.5G wired LAN controller and an onboard Wi-Fi 6E module pre-installed in the M.2 Key-E slot, supporting tri-band 2.4 GHz / 5 GHz / 6 GHz (160 MHz) MU-MIMO with speeds up to 2.4 Gbps and Bluetooth 5.3. USB ports include rear-panel USB 10 Gbps Type-A and Type-C, USB 5 Gbps Type-A, and USB 2.0 ports, plus front-panel headers for USB 5 Gbps Type-C, USB 5 Gbps Type-A, and USB 2.0. Display output is provided by a single HDMI 2.1 port supporting up to 4K 60 Hz via integrated graphics. Audio is delivered through a Realtek ALC897 codec with 7.1-channel HD Audio support. Thermal management includes the Frozr Guard extended heatsink with MOSFET thermal pads rated at 7 W/mK, choke thermal pads, and the M.2 Shield Frozr to keep NVMe drives at stable temperatures. The board ships with EZ Debug LEDs, EZ M.2 Clip II, EZ PCIe Clip II, EZ Antenna for tool-free installation, and three ARGB V2 headers plus one RGB header for lighting customisation via MSI Mystic Light. TPM 2.0 header and a 3-year warranty round out the package. Verified Specifications: – Chipset: AMD B840 – Socket: AM5 – CPU Support: AMD Ryzen 9000 / 8000 / 7000 Series Desktop – Form Factor: mATX, 243.84 mm × 243.84 mm – Memory: 4× DDR5 UDIMM, max 256 GB; DDR5 4800–5600 MT/s (JEDEC), up to 8000+ MT/s (OC) – PCIe Slots: 1× PCIe 4.0 x16 (CPU), 1× PCIe 3.0 x4 (Chipset) – M.2: 2× PCIe 4.0 x4 (CPU), 2280/2260 – SATA: 4× 6 Gb/s – LAN: Realtek 8125D 2.5G – Wi-Fi: Wi-Fi 6E (2.4/5/6 GHz, 160 MHz, up to 2.4 Gbps) – Bluetooth: 5.3 – Audio: Realtek ALC897, 7.1-channel HD – Video Out: 1× HDMI 2.1 (4K 60 Hz) – USB (Rear): 1× 10 Gbps Type-C, 1× 10 Gbps Type-A, 2× 5 Gbps Type-A, 4× USB 2.0 – Warranty: 3 Years