MSI PRO B850-S EVO WIFI 7 AMD AM5 DDR5 PCIe 5.0 5G LAN ATX Motherboard

General

SKU	MSI-B85-SEW

Features

Brand	MSI
Model Number	PRO B850-S EVO WIFI
Motherboard Chipset	B850 Chipset (Ryzen AM5)
CPU Socket Type	AM5
Memory Type	DDR5
Outputs	DisplayPort, HDMI, USB-C 4.0
Form Factor	ATX
Key Features	AMD B850 chipset with AM5 socket supporting Ryzen 9000, 8000 and 7000 series desktop processors PCIe 5.0 x16 primary slot for full next-generation GPU bandwidth alongside a PCIe 4.0 x4 secondary slot for additional expansion Three M.2 slots including a PCIe 5.0 x4 primary slot from the CPU for next-generation NVMe storage performance Four DDR5 UDIMM slots supporting up to 256GB with speeds up to 8200 MT/s via overclocking and AMD EXPO support Wi-Fi 7 tri-band support across 2.4GHz, 5GHz and 6GHz delivering speeds up to 2.9Gbps with Bluetooth 5.4 Realtek 5G wired LAN for fast and reliable network connectivity Dual onboard graphics outputs including HDMI 2.1 and DisplayPort 1.4 for integrated graphics support up to 4K 60Hz Flash BIOS Button and EZ Debug LED for straightforward troubleshooting and BIOS updates without a CPU installed

MSI PRO B850-S EVO WIFI 7 AMD AM5 DDR5 PCIe 5.0 5G LAN ATX Motherboard

The MSI PRO B850-S EVO WIFI 7 is a reliable and well-equipped AMD AM5 ATX motherboard ideal for professional and enthusiast builds alike. Built on the B850 chipset with PCIe 5.0, DDR5 memory up to 8200 MT/s, Wi-Fi 7 and Realtek 5G LAN, it delivers a solid and future-ready platform for any Ryzen 9000, 8000 or 7000 series system.

Processing & Platform

Built on the AMD B850 chipset with an AM5 socket, the PRO B850-S EVO supports AMD Ryzen 9000, 8000 and 7000 series desktop processors. The PCIe 5.0 x16 primary slot ensures your GPU runs at full bandwidth, while a secondary PCIe 4.0 x4 slot provides additional expansion flexibility for your build.

Memory & Storage

Four DDR5 UDIMM slots support up to 256GB of memory with speeds reaching 8200 MT/s via overclocking and full AMD EXPO support. Three M.2 slots including a PCIe 5.0 x4 primary slot from the CPU deliver next-generation storage performance, complemented by four SATA 6G ports with RAID 0, 1, 5 and 10 support for SATA devices and RAID 0 and 1 for M.2 NVMe drives.

Connectivity & Graphics

Wi-Fi 7 tri-band support delivers wireless speeds up to 2.9Gbps alongside Bluetooth 5.4, while Realtek 5G wired LAN keeps your connection fast and stable. Dual onboard graphics outputs via HDMI 2.1 and DisplayPort 1.4 support resolutions up to 4K 60Hz, and the rear panel features USB 10Gbps Type-C and Type-A ports for fast peripheral connectivity.

Specifications

General

Form Factor: ATX
Dimensions: 243.84mm x 304.8mm
Chipset: AMD B850
Socket: AM5
Operating System: Windows 11 64-bit
Processor Support
AMD Ryzen 9000 Series
AMD Ryzen 8000 Series
AMD Ryzen 7000 Series

Memory

Slots: 4x DDR5 UDIMM
Maximum Capacity: 256GB
JEDEC Speed: 4800 – 5600 MT/s
Overclocking Speed: 5600 – 8200 MT/s
Supported Configurations:
1DPC 1R: Up to 8200+ MT/s
1DPC 2R: Up to 6400+ MT/s
2DPC 1R: Up to 6400+ MT/s
2DPC 2R: Up to 6000+ MT/s
Memory Support: Non-ECC Unbuffered, Dual-Channel, AMD EXPO, CUDIMM (Clock Driver Bypass Mode)
Expansion Slots
PCI_E1: PCIe 5.0 x16 (From CPU)
PCI_E2: PCIe 4.0 x4 (From Chipset)

Storage

M.2_1: PCIe 5.0 x4 (From CPU), Supports 2280/2260
M.2_2: PCIe 4.0 x4 (From CPU), Supports 22110/2280
M.2_3: PCIe 4.0 x2 (From Chipset), Supports 2280/2260
SATA: 4x SATA 6G
RAID Support
SATA: RAID 0, 1, 5, 10
M.2 NVMe: RAID 0, 1
Onboard Graphics
1x HDMI 2.1 TMDS (Up to 4K 60Hz)
1x DisplayPort 1.4 (Up to 4K 60Hz)

Audio

Realtek ALC897
7.1-Channel High Definition Audio
Networking
Wired: Realtek 8126VB 5G LAN
Wireless: Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be)
Bands: 2.4GHz, 5GHz, 6GHz (160MHz)
Max Wireless Speed: Up to 2.9Gbps
Bluetooth: 5.4 with MLO and 4KQAM
Rear USB Ports
1x USB 10Gbps Type-C
2x USB 10Gbps Type-A
2x USB 5Gbps Type-A
4x USB 2.0
Front Panel USB Headers
1x USB 10Gbps Type-C
2x USB 5Gbps Type-A
4x USB 2.0

Internal Connectors

1x ATX Power Connector
2x CPU Power Connector
1x PCIe Power Connector (8-pin)
1x CPU Fan
1x Combo Fan (Pump/System Fan)
4x System Fan
2x Front Panel Headers
1x Chassis Intrusion Header
1x Front Audio Header
1x COM Port
1x Tuning Controller Connector
3x Addressable V2 RGB LED Connectors
1x RGB LED Connector
1x TPM Pin Header (TPM 2.0)
LED Features
4x EZ Debug LED
1x EZ Memory Detection LED
BIOS & Diagnostics
Flash BIOS Button
Clear CMOS Button