MSI Pro B850M-P Wifi DDR5 AMD Motherboard
MPN MSI-PRO-B850M-P-WIFI · Brand MSI · ATX243.84mmx304.8mm
The MSI Pro B850M-P WiFi is an ATX motherboard on the AMD B850 chipset (Socket AM5) featuring Wi-Fi 7, Realtek 5G LAN, PCIe 5.0, and support for up to 256 GB DDR5 with AMD Ryzen 9000/8000/7000 series processors
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Overview
The MSI Pro B850M-P WiFi is a full-size ATX motherboard built on the AMD B850 chipset, designed for Socket AM5 and compatible with AMD Ryzen 9000, 8000, and 7000 series desktop processors. Its clean silver aesthetic is engineered to complement both white and black PC builds, making it a practical choice for professionals and system builders who want visual coherence without sacrificing capability. At the heart of its networking capability is Wi-Fi 7 (802.11be) with support for MU-MIMO TX/RX across 2.4 GHz, 5 GHz, and 6 GHz bands — reaching wireless speeds up to 5.8 Gbps at 320 MHz channel width. Wired connectivity is handled by a Realtek 8126VB 5G LAN controller, providing high-bandwidth Ethernet for latency-sensitive tasks. MSI's AI LAN Manager intelligently classifies and prioritises traffic so online applications remain responsive under load. For storage, the primary PCIe slot (PCI_E1) runs at PCIe 5.0 x16 from the CPU when paired with Ryzen 9000 or 7000 series processors, enabling next-generation GPU and NVMe performance. The board includes PCIe 5.0 M.2 support with the tool-free EZ M.2 Shield Frozr II heatsink, which features two alignment notches for single-finger installation and removal. Memory is handled by four DDR5 UDIMM slots supporting up to 256 GB in dual-channel configuration. JEDEC speeds range from 4800 to 5600 MT/s, while overclocking via AMD EXPO can push DDR5 to 8200+ MT/s (1DPC 1R configuration) on Ryzen 9000 series processors. CUDIMM is supported in clock driver bypass mode. The power delivery system uses a 7+2+1 digital VRM phase design fed by dual 8-pin CPU power connectors and a dedicated 8-pin supplemental PCIe power connector. Onboard audio is provided by a Realtek ALC897 codec delivering 7.1-channel HD Audio. RGB lighting is supported through three JARGB_V2 addressable headers and one JRGB header, controllable via MSI Center's Mystic Light utility. Verified Specifications: - Chipset: AMD B850 - Socket: AM5 - Form Factor: ATX (243.84 mm x 304.8 mm) - Supported CPUs: AMD Ryzen 9000 / 8000 / 7000 Series - Memory: 4x DDR5 UDIMM, max 256 GB; up to 8200+ MT/s (OC), 5600 MT/s (JEDEC); AMD EXPO supported - PCIe: PCI_E1 PCIe 5.0 x16 (CPU); PCI_E2 PCIe 3.0 x1 (Chipset); PCI_E3 PCIe 4.0 x4 (Chipset); PCI_E4 PCIe 3.0 x1 (Chipset) - Wireless: Wi-Fi 7 (802.11be), up to 5.8 Gbps, 2.4/5/6 GHz, MU-MIMO - LAN: Realtek 8126VB 5G - USB Rear: 4x USB 2.0, 1x USB 5Gbps Type-A, 1x USB 10Gbps Type-A, 2x USB 10Gbps Type-C - USB Front Headers: 4x USB 2.0, 4x USB 5Gbps Type-A, 1x USB 5Gbps Type-C - Display: 1x HDMI 2.1 (4K 60Hz) - Audio: Realtek ALC897, 7.1-ch HD Audio - VRM: 7+2+1 digital phases - Warranty: 3 Years
Datasheet
| Warranty | 3 Years |
|---|---|
| Chipset | AMD B850 |
| Pci | 4x PCI-E x16 slotPCI_E1 Gen PCIe 5.0 supports up to x16 (From CPU)PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset)PCI_E3 Gen PCIe 4.0 supports up to x4 (From Chipset)PCI_E4 Gen PCIe 3.0 supports up to x1 (From Chipset) |
| HDMI | 1x HDMI™Support HDMITM 2.1, maximum resolution of 4K 60Hz* |
| Audio | Realtek® ALC8977.1-Channel High Definition Audio |
| Slots | 4x PCI-E x16 slotPCI_E1 Gen PCIe 5.0 supports up to x16 (From CPU)PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset)PCI_E3 Gen PCIe 4.0 supports up to x4 (From Chipset)PCI_E4 Gen PCIe 3.0 supports up to x1 (From Chipset)PCI_E1 slot• Supports PCIe 5.0 x16 (For Ryzen™ 9000/ 7000 Series processors)• Supports PCIe 4.0 x8 (For Ryzen™ 8700/ 8600/ 8400 Series processors)• Supports PCIe 4.0 x4 (For Ryzen™ 8500/ 8300 Series processor)* PCI_E2, PCI_E3 & PCI_E4 share the bandwidth, PCI_E3 slot will run at x2 speed when installing devices in the PCI_E2 or PCI_E4 slot |
| USB (S) | 4x USB 2.0 (Rear)4x USB 2.0 (Front)1x USB 5Gbps Type A (Rear)4x USB 5Gbps Type A (Front)1x USB 5Gbps Type C (Front)1x USB 10Gbps Type A (Rear)2x USB 10Gbps Type C (Rear) |
| M.2 Socket | Socket AM5 |
| Lan Port (S) | Realtek® 8126VB 5G LAN |
| Supported CPU | Supports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processors |
| Supported Memory | 4x DDR5 UDIMM, Maximum Memory Capacity 256GBMemory Support DDR5 8200 – 5600 (OC) MT/s / 5600 – 4800 (JEDEC) MT/sRyzen™ 9000 Series Processors max. overclocking frequency:• 1DPC 1R Max speed up to 8200+ MT/s• 1DPC 2R Max speed up to 6400+ MT/s• 2DPC 1R Max speed up to 6400+ MT/s• 2DPC 2R Max speed up to 4800+ MT/sSupports AMD POR Speed and JEDEC SpeedSupports Memory Overclocking and AMD EXPOTMSupports Dual-Channel modeSupports Non-ECC, Un-buffered memorySupports CUDIMM, Clock Driver bypass mode only* |
| Internal I/O Ports | 1x Power Connector(ATX_PWR)2x Power Connector(CPU_PWR)1x Power Connector(PCIE_PWR 8pin)1x CPU Fan1x Combo Fan (Pump_Sys Fan)4x System Fan2x Front Panel (JFP)1x Chassis Intrusion (JCI)1x Front Audio (JAUD)1x Com Port (JCOM)1x Tuning Controller connector(JDASH)3x Addressable V2 RGB LED connector (JARGB_V2)1x RGB LED connector(JRGB)1x TPM pin header(Support TPM 2.0)4x USB 2.0 ports4x USB 5Gbps Type A ports1x USB 5Gbps Type C ports |
| Wireless Communication Module | Wi-Fi 7The Wireless module is pre-installed in the M.2 (Key-E) slotSupports MU-MIMO TX/RX, 2.4GHz/ 5GHz/ 6GHz* (320MHz) up to 5.8GbpsSupports 802.11 a/ b/ g/ n/ ac/ ax/ be |
| Form Factor | ATX243.84mmx304.8mm |
