MSI MAG B850M MORTAR WIFI (AM5) mATX Motherboard
The MSI MAG B850M MORTAR WIFI is a compact, DIY-friendly backbone for Ryzen™ 9000/8000/7000 builds. With PCIe® 5.0 for GPUs and Gen5 NVMe, Wi-Fi 7, 5G LAN, front USB 20Gbps Type-C, and a sturdy 12+2+1 / 60A VRM, it’s tuned for long gaming sessions in a clean mATX footprint—plus EZ features that simplify every install.
Key Features
- AMD B850 / AM5 platform with support for Ryzen™ 9000 / 8000 / 7000 Series
- PCIe 5.0 x16 for next-gen GPUs + dual PCIe 5.0 x4 M.2 (from CPU) for ultra-fast NVMe
- Low-latency networking: Wi-Fi 7 solution + Realtek 5G LAN
- 12+2+1 DRPS VRM with 60A SPS, dual 8-pin CPU power, 8-layer PCB (2oz copper)
- Thermals for uptime: Extended heatsinks, EZ M.2 Shield Frozr II, 7W/mK pads, enlarged chipset heatsink
- EZ DIY suite: EZ PCIe Release, EZ M.2 Clip II, EZ Antenna, Pre-Installed I/O Shield, EZ Conn (JAF_1), EZ Debug & EZ Memory Detection LEDs
- DDR5 performance: OC up to 8200+ MT/s, Dual-Channel, AMD EXPO™, High-Efficiency Mode & Latency Killer (up to 12% lower memory latency*)
- Audio Boost 5 with Realtek ALC4080 and optical S/PDIF out for clean, immersive sound
Technical Specifications
- Chipset / Socket: AMD B850 / AM5
- CPU Support: Ryzen™ 9000 / 8000 / 7000 Series
- Memory: 4× DDR5 UDIMM, up to 256GB; OC up to 8200+ MT/s; Dual-Channel; AMD EXPO; CUDIMM (clock-driver bypass)
- Power Design: 12+2+1 Duet Rail Power System, 60A SPS, dual 8-pin CPU power, 8-layer PCB (2oz copper)
- Expansion Slots:
- PCI_E1: PCIe 5.0 x16 (Ryzen 9000/7000) / PCIe 4.0 x8 (Ryzen 8700/8600/8400) / PCIe 4.0 x4 (Ryzen 8500/8300)
- PCI_E2: PCIe 4.0 x4 (chipset)
- Graphics Output: 1× HDMI 2.1 FRL (up to 8K60*)
- Storage: 3× M.2 + 4× SATA 6Gb/s
- M.2_1 (CPU): up to PCIe 5.0 x4, 2280/2260
- M.2_2 (CPU): up to PCIe 5.0 x4 (varies by CPU: up to PCIe 4.0 x4 on Ryzen 8700/8600/8400; up to x2 on 8500/8300), 2280/2260
- M.2_3 (chipset): PCIe 4.0 x2, 2280
- RAID: SATA 0/1/10; NVMe 0/1/5 (RAID 5 with Ryzen 9000)
- USB (Rear): 1× 20Gbps Type-C, 1× 10Gbps Type-C, 3× 10Gbps Type-A, 1× 5Gbps Type-A
- USB (Front headers): 4× USB 2.0, 2× 5Gbps Type-A, 1× 10Gbps Type-C
- Networking: Realtek 8126-VB 5G LAN, Wi-Fi 7, Bluetooth 5.4
- Audio: Realtek ALC4080, 7.1-Channel USB High-Performance Audio, up to 32-bit/384 kHz (front), optical S/PDIF out
- Back-Panel Extras: Clear CMOS, Flash BIOS Button
- Form Factor: mATX (243.84 × 243.84 mm)
- OS Support: Windows® 11 64-bit
*Display output requires a Ryzen CPU with integrated graphics.
The MAG B850M MORTAR WIFI packs high-end connectivity and cooling into a reliable mATX board—perfect for compact, high-FPS rigs and creator builds that demand dependable, all-day stability.
