MSI Pro B850-P WIFI ATX Motherboard
MPN PRO-B850-P-WIFI · Brand MSI · ATX
The MSI Pro B850-P WIFI is an ATX motherboard for AMD AM5 (Ryzen 7000/8000/9000), featuring Wi-Fi 7, 5G LAN, PCIe 5.0, DDR5 up to 8200+ MT/s, and a 12+2+1 VRM with dual 8-pin CPU power connectors
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Overview
The MSI Pro B850-P WIFI is a full-size ATX motherboard built on AMD's B850 chipset for the AM5 socket, designed to support AMD Ryzen 9000, 8000, and 7000 series desktop processors. It strikes a balance between professional reliability and enthusiast-grade performance, making it a well-rounded platform for both productivity workloads and demanding computing tasks. Power delivery is handled by a 12+2+1 digital power phase design (Duet Rail Power System) fed by dual 8-pin CPU power connectors, giving the board ample headroom for high-core-count Ryzen processors running under sustained load. The VRM heatsink is backed by 7W/mK rated MOSFET thermal pads and additional choke thermal pads to maintain stable temperatures across the entire power delivery section. For storage, the board supports PCIe 5.0 x4 M.2 via the Lightning Gen 5 x4 slot, covered by MSI's EZ M.2 Shield Frozr II — a toolless thermal shield that helps manage SSD temperatures during intensive read/write operations. Four expansion slots are available: one PCIe 5.0 x16 (CPU-direct) for the primary graphics card, one PCIe 4.0 x4, and two PCIe 3.0 x1 slots from the chipset. Memory support is dual-channel DDR5, rated up to 8200+ MT/s under overclocking. The board supports AMD EXPO profiles, JEDEC speeds, and CUDIMM (in clock driver bypass mode), with a maximum installed capacity of 256 GB across its DIMM slots. Connectivity is a strong point: the board ships with Wi-Fi 7 and Bluetooth 5.4 via an EZ Antenna design, plus a dedicated 5G LAN port for wired high-speed networking. The rear I/O provides multiple USB 10 Gbps Type-A and Type-C ports, USB 5 Gbps Type-A, USB 2.0, HDMI video output, S/PDIF out, audio connectors, a Flash BIOS button, and a Clear CMOS button. Internally, the board hosts headers for four USB 5 Gbps Type-A, one USB 5 Gbps Type-C, and four USB 2.0 ports, plus three addressable Gen 2 RGB headers and one standard RGB header for lighting customisation. The PCB uses a 6-layer design with 2 oz thickened copper traces, and Transient Voltage Suppressors (TVS) are fitted across the board to protect against voltage spikes. The silver colour scheme is designed to complement both white and black chassis builds. Verifiable Specifications: - Socket: AM5 - Chipset: AMD B850 - Form Factor: ATX - CPU Compatibility: AMD Ryzen 9000, 8000, 7000 series desktop - Memory: DDR5, Dual Channel, up to 256 GB, up to 8200+ MT/s (OC), EXPO & JEDEC support - Primary PCIe Slot: PCIe 5.0 x16 (CPU) — PCIe 4.0 x8/x4 for certain Ryzen 8000 SKUs - M.2: Lightning Gen 5 x4 (PCIe 5.0) - VRM: 12+2+1 digital power phases, dual 8-pin CPU power connectors - Wireless: Wi-Fi 7, Bluetooth 5.4 - Wired LAN: 5G - Rear USB: USB 10 Gbps Type-A, USB 10 Gbps Type-C, USB 5 Gbps Type-A, USB 2.0 - Video Output: 1x HDMI - RGB Headers: 3x ARGB V2, 1x RGB - Warranty: 3 Years
Datasheet
| Memory Type | DDR5 |
|---|---|
| Warranty | 3 Years |
| Form Factor | ATX |
| Chipset | B850 |
| Socket | AM5 |
| Platform | AMD |
| CPU Type | Ryzen 9000,Ryzen 8000,Ryzen 7000 |
| Max Memory | 256 GB |
| Memory Speed | up to 8200+ |
| Graphics Port | 1x HDMI |
| Memory Feature | Supports AMD POR Speed and JEDEC Speed Supports Memory Overclocking and AMD EXPOTM Supports Dual-Channel mode Supports Non-ECC, Un-buffered memory Supports CUDIMM, Clock Driver bypass mode only* * CUDIMM support and POR boot frequency may vary by CPU series, with manual overclocking available after boot. Certain CPUs may fail to boot, but future BIOS updates will improve compatibility. • The DIMM slots on this motherboard have double-sided latches. • Memory compatibility and supported speeds can vary depending on the CPU and memory configuration. For detailed information, please refer to the Memory Compatibility List available on the product’s Support page or visit Brand Website |
| Expansion Slots | 4x PCI-E x16 slot PCI_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) |
| Channel Supported | Dual Channel |
| Wireless Networking | WiFi 7,Bluetooth 5.4 |
| Back Panel I/O Ports | Clear CMOS Button USB 10Gbps Type-A USB 2.0 5G LAN Wi-Fi / Bluetooth Audio connectors Flash BIOS Button HDMI™ USB 10Gbps Type-C USB 5Gbps Type-A USB 10Gbps Type-C S/PDIF OUT |
| Internal I/O Connector | 1x Power Connector(ATX_PWR) 2x Power Connector(CPU_PWR) 1x Power Connector(PCIE_PWR 8pin) 1x CPU Fan 1x Combo Fan (Pump_Sys Fan) 4x System Fan 2x 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 ports 4x USB 5Gbps Type A ports 1x USB 5Gbps Type C ports |




