MSI Pro B840-P WIFI ATX Motherboard
MPN PRO-B840-P-WIFI · Brand MSI · ATX
The MSI Pro B840-P WIFI is an ATX motherboard with AMD AM5 socket, B840 chipset, DDR5 support up to 8000+ MT/s, Wi-Fi 7, 2.5G LAN, and a 7+2+1 power phase design for Ryzen 7000/8000/9000 processors
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Overview
The MSI Pro B840-P WIFI is an ATX form-factor motherboard built on AMD's B840 chipset with an AM5 socket, designed to support AMD Ryzen 9000, 8000, and 7000 series desktop processors. It targets productivity-focused builders and professionals who need a reliable, feature-rich platform without the premium price of enthusiast-tier boards. At the heart of its power delivery is a Direct 7+2+1 digital power phase design using P-PAK components and an 8-pin CPU power connector, providing stable voltage regulation under sustained workloads. The six-layer PCB is constructed with 2 oz thickened copper traces to reduce signal loss and improve thermal transfer across the board. Memory performance is a standout: the board supports DDR5 in dual-channel configuration, with speeds reaching 8000+ MT/s via overclocking. It is compatible with AMD EXPO profiles, JEDEC standard speeds, and non-ECC unbuffered DIMMs, including CUDIMM modules in clock-driver bypass mode. Maximum supported memory is 256 GB across its DIMM slots, which feature single-sided latches. Thermal management is handled through MSI's Frozr Guard solution, which includes an extended VRM heatsink, MOSFET thermal pads rated at 7 W/mK, additional choke thermal pads, and the EZ M.2 Shield Frozr II to keep NVMe drives cool under continuous load. Connectivity is a genuine strength. The board ships with Wi-Fi 7 and Bluetooth 5.4 wireless, alongside a dedicated 2.5G LAN port for wired networking. The primary PCIe slot (PCI_E1) runs at PCIe 4.0 x16 for Ryzen 9000 and 7000 series CPUs, making it compatible with current discrete graphics cards. Storage expansion uses Lightning Gen 4 x4 M.2 slots. The rear I/O panel includes USB 10 Gbps Type-A and Type-C ports, USB 5 Gbps Type-A ports, USB 2.0, HDMI video output, a 2.5G LAN jack, audio connectors, a Flash BIOS button, and a Clear CMOS button. Installation convenience is addressed through the EZ DIY ecosystem: EZ M.2 Clip II for tool-free M.2 installation, EZ PCIe Clip II with a one-finger rebounding release mechanism on the primary GPU slot, and EZ Antenna for quick wireless antenna attachment. RGB enthusiasts will find two Addressable V2 RGB LED headers (JARGB_V2) and one standard RGB header (JRGB) for peripheral lighting integration. A TPM 2.0 pin header is also present for security-conscious deployments. — Verified Specifications — Socket: AM5 | Chipset: AMD B840 | Form Factor: ATX Supported CPUs: AMD Ryzen 9000 / 8000 / 7000 series Memory: DDR5 Dual Channel, up to 256 GB, up to 8000+ MT/s (OC) Primary PCIe Slot: PCIe 4.0 x16 (Ryzen 9000/7000) / x8 (Ryzen 8700/8600/8400) / x4 (Ryzen 8500/8300) Total PCIe Slots: 5 (1x PCIe 4.0 x16, 4x PCIe 3.0) Power Phases: 7+2+1 digital, 8-pin CPU connector Wireless: Wi-Fi 7, Bluetooth 5.4 | Wired LAN: 2.5G Rear USB: USB 10 Gbps Type-A, USB 10 Gbps Type-C, USB 5 Gbps Type-A, USB 2.0 Video Output: 1x HDMI | PCB: 6-layer, 2 oz copper Warranty: 3 Years
Datasheet
| Memory Type | DDR5 |
|---|---|
| Warranty | 3 Years |
| Form Factor | ATX |
| Chipset | B840 |
| Socket | AM5 |
| Platform | AMD |
| CPU Type | Ryzen 9000,Ryzen 8000,Ryzen 7000 |
| Max Memory | 256 GB |
| Memory Speed | up to 8000+ |
| 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 single-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 | 5x PCI-E x16 slot PCI_E1 Gen PCIe 4.0 supports up to x16 (From CPU) PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset) PCI_E3 Gen PCIe 3.0 supports up to x1 (From Chipset) PCI_E4 Gen PCIe 3.0 supports up to x4 (From Chipset) PCI_E5 Gen PCIe 3.0 supports up to x1 (From Chipset) PCI_E1 slot • Supports PCIe 4.0 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 processors) |
| 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 2.5G LAN Wi-Fi / Bluetooth Audio connectors Flash BIOS Button HDMI™ USB 10Gbps Type-C USB 5Gbps Type-A |
| Internal I/O Connector | 1x Power Connector(ATX_PWR) 1x Power Connector(CPU_PWR) 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) 2x 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 2x USB 5Gbps Type A ports 1x USB 5Gbps Type C ports |
