MSI MAG B850M MORTAR WIFI Motherboard
MSI MAG B850M MORTAR WIFI Motherboard
AMD B850 mATX Motherboard for AM5 — 12+2+1 Phase VRM, 60A SPS, Full-Speed Wi-Fi 7, 5G LAN, USB 20Gbps, Dual PCIe 5.0 M.2 Gen5, DDR5 8200+ OC, Supplemental PCIe Power,...
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Description
AMD B850 mATX Motherboard for AM5 — 12+2+1 Phase VRM, 60A SPS, Full-Speed Wi-Fi 7, 5G LAN, USB 20Gbps, Dual PCIe 5.0 M.2 Gen5, DDR5 8200+ OC, Supplemental PCIe Power, Ryzen 9000 / 8000 / 7000 Ready.
The MSI MAG B850M MORTAR WIFI brings the legendary Mortar reputation to AMD B850 in a compact mATX form factor. Built with a 12+2+1 Duet Rail Power System and 60A Smart Power Stages, it offers full-speed Wi-Fi 7 (320MHz, up to 5.8Gbps, MLO, 4KQAM), 5G LAN, USB 20Gbps rear Type-C, dual CPU-direct PCIe 5.0 x4 M.2 Gen5 slots, one PCIe 4.0 x2 M.2 (Chipset), Supplemental PCIe Power 8-pin, Realtek ALC4080 Audio Boost 5 with S/PDIF, and MSI's EZ DIY suite — all in a 244 x 244mm footprint ideal for mid-tower and small case builds.
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>CPU Support: AMD Ryzen 9000 / 8000 / 7000 Series, Socket AM5
>Power Delivery: 12+2+1 Phase VRM, 60A Smart Power Stages, dual 8-pin CPU connectors, Supplemental PCIe Power (8-pin), Core Boost, Memory Boost
>Storage: 3x M.2 — M.2_1: PCIe 5.0 x4 (CPU, 2280/2260, Ryzen 9000/7000; PCIe 4.0 x4 Ryzen 8000); M.2_2: PCIe 5.0 x4 (CPU, 2280/2260, Ryzen 9000/7000; PCIe 4.0 x4 Ryzen 8700/8600/8400; PCIe 4.0 x2 Ryzen 8500/8300); M.2_3: PCIe 4.0 x2 (Chipset, 2280); 4x SATA 6G
>Connectivity: Wi-Fi 7 (2.4/5/6GHz, 320MHz, up to 5.8Gbps, MU-MIMO, MLO, 4KQAM), Bluetooth 5.4, Realtek RTL8126-VB 5G LAN
>USB: Rear — 1x USB 20Gbps Type-C, 3x USB 10Gbps Type-A, 1x USB 10Gbps Type-C, 4x USB 5Gbps Type-A; Front — 2x USB 5Gbps Type-A, 1x USB 10Gbps Type-C, 4x USB 2.0
>PCIe: PCI_E1: PCIe 5.0 x16 (CPU, 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)
>Audio: Realtek ALC4080, Audio Boost 5, 7.1-CH, S/PDIF, up to 32-bit/384kHz
| Specification | Details |
|---|---|
| Chipset | AMD B850 |
| Socket | AM5 |
| Form Factor | mATX (243.84 x 243.84 mm) |
| Memory | 4x DDR5 UDIMM, up to 256GB; DDR5 8200–5600 (OC) / 5600–4800 (JEDEC) MT/s; 1DPC 1R max 8200+ MT/s / 1DPC 2R max 6400+ MT/s / 2DPC max 6400+ MT/s OC; Single-sided latches |
| Memory Standard | AMD EXPO, A-XMP, CUDIMM (bypass mode), Dual Channel, Non-ECC Unbuffered, High-Efficiency Mode |
| PCIe Slots | PCI_E1: PCIe 5.0 x16 (CPU); PCI_E2: PCIe 4.0 x4 (Chipset) |
| M.2 Slots | M.2_1: PCIe 5.0 x4 (CPU, 2280/2260); M.2_2: PCIe 5.0 x4 (CPU, 2280/2260); M.2_3: PCIe 4.0 x2 (Chipset, 2280) |
| SATA | 4x SATA 6G | RAID 0, 1, 10; M.2 NVMe RAID 0, 1, 5 (Ryzen 9000 only) |
| LAN | Realtek RTL8126-VB 5G LAN |
| Wireless | Wi-Fi 7 (2.4/5/6GHz, 320MHz, up to 5.8Gbps, MU-MIMO, MLO, 4KQAM), Bluetooth 5.4 |
| Rear USB | 1x USB 20Gbps Type-C, 3x USB 10Gbps Type-A, 1x USB 10Gbps Type-C, 4x USB 5Gbps Type-A |
| Front USB Headers | 2x USB 5Gbps Type-A, 1x USB 10Gbps Type-C, 4x USB 2.0 |
| Video Output | 1x HDMI 2.1 (8K@60Hz) — iGPU only |
| Audio | Realtek ALC4080, Audio Boost 5, 7.1-CH, S/PDIF, 32-bit/384kHz |
| Fan Headers | 1x CPU Fan, 1x Combo Fan (Pump/Sys), 4x System Fan, Smart Fan 6 |
| RGB | 3x ARGB V2 headers, 1x RGB header, 4x EZ Debug LED, 1x EZ Memory Detection LED |
| Extras | EZ M.2 Clip, EZ PCIe Release, EZ Conn header, EZ Antenna, Supplemental PCIe Power (8-pin), Flash BIOS Button, Click BIOS 5, metal backplate |
| OS Support | Windows 11 64-bit |