MSI PRO B850-S WIFI6E AMD B850 AM5 ATX Motherboard

MSI PRO B850-S WIFI6E | AMD AM5 ATX Motherboard

The MSI PRO B850-S WIFI6E motherboard AMD B850 Socket AM5 ATX is engineered for professionals and enthusiasts building with AMD Ryzen 7000, 8000, and 9000 series processors. It provides a solid foundation for productivity and gaming, featuring Wi-Fi 6E, 2.5G LAN, and PCIe 5.0 support. This board is designed for users who value stability and modern connectivity in a standard ATX form factor.

Key Connectivity and Internal Layout

This motherboard offers a comprehensive set of headers and slots for a modern PC build. It includes four SATA III connectors and two M.2 slots for storage. You also get multiple USB headers and a TPM connector for enhanced security. Because the layout is standard ATX, cable management in most mid-tower cases is straightforward.

• Storage Interfaces: 2x M.2, 4x SATA III
• USB Headers: 1x USB 3.2 Gen 2, 2x USB 3.2 Gen 1, 4x USB 2.0
• Fan Headers: 1x CPU, 1x Power Fan
• Other Headers: Front Panel, Audio, TPM, RGB LED, Chassis Intrusion

High-Speed DDR5 Memory Support

The board supports up to 256 GB of DDR5 memory across four DIMM slots. It leverages dual-channel architecture for improved bandwidth. MSI includes features like Latency Killer and High-Efficiency Mode in the BIOS. These tools help optimise memory performance, reducing latency for demanding applications.

PCIe 5.0 and Graphics Card Support

The primary M.2 slot supports PCIe 5.0, offering future-proof storage speeds. The main PCI Express x16 slot is Gen 4, suitable for current graphics cards. MSI includes Steel Armor on the slot for added physical support. However, note that the motherboard does not have an integrated graphics card; you will need a dedicated GPU.

Robust Power and Protection Features

The VRM design uses a 12+2+1 digital power phase layout. This provides stable power delivery for high-end Ryzen processors. The board also includes Transient Voltage Suppressors (TVS) and Over Current Protection. These features help safeguard components against electrical damage and power surges.

Advanced Cooling and Fan Control

The board includes multiple fan headers and supports PWM/DC modes. MSI’s Cooling Wizard and Frozr AI Cooling software allow for automated fan curve adjustments. This helps maintain low temperatures and quiet operation. The Auto Detect Fan feature simplifies setup by identifying the fan type automatically.

Modern Networking and Audio

Connectivity includes Wi-Fi 6E and a 2.5 Gigabit Ethernet port powered by Realtek RTL8125. Bluetooth 5.3 is also integrated for peripherals. Audio is handled by the Realtek ALC897 chip, supporting 7.1-channel output for immersive sound.

In the box

• MSI PRO B850-S WIFI6E motherboard
• SATA cables
• Screw package
• Wi-Fi antenna

Before you order

• Confirm your PC case supports ATX (243.8 mm x 304.8 mm) dimensions.
• Verify your power supply has the required 24-pin and 8-pin EPS connectors.
• Ensure your memory is DDR5-SDRAM, as DDR4 is not compatible.
• Confirm Wi-Fi 6E (6 GHz) band support is permitted in your UK location.

Buyer FAQs

Summary & warranty

This MSI board is a practical choice for UK builders assembling a Ryzen-based workstation or gaming PC. It offers strong connectivity, including Wi-Fi 6E and 2.5G LAN, plus modern storage support. It suits users who need reliability without excessive RGB flair. Covered by the applicable manufacturer warranty.