MSI PRO B850-S WIFI6E

  • Supports AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors
  • Supports DDR5 Memory, Dual Channel DDR5 8200+ MT/s (OC)
  • Ultra Performance: 12+2+1 Duet Rail Power System with P-PAK, dual 8-pin CPU power connectors, Core Boost, Memory Boost, 6-layer PCB made by 2oz thickened copper and server-grade level material
  • EZ DIY: EZ M.2 Clip II, EZ PCIe Clip II and EZ Antenna
  • Lightning Fast Game experience: PCIe 4.0 slot and Lightning Gen 5 x4 M.2
  • Audio Boost: Reward your ears with studio-grade sound quality for the most immersive gaming experience
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Specification Details
Chipset AMD B850
CPU Supports AMD Ryzen 9000 / 8000 / 7000 Series Desktop Processors
Socket AM5
Memory
Configuration 4x DDR5 UDIMM, Maximum Memory Capacity 256GB
Memory Support DDR5 8200 – 5600 (OC) MT/s / 5600 – 4800 (JEDEC) MT/s
Ryzen 9000 Series Max Overclocking Frequency 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
Features Supports AMD POR Speed and JEDEC Speed
Supports Memory Overclocking and AMD EXPO
Supports Dual-Channel mode
Supports Non-ECC, Un-buffered memory
Supports CUDIMM, Clock Driver bypass mode only*
Notes * 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 depend on the CPU and configuration. For details, visit https://www.msi.com/support/.
Onboard Graphics
Ports 1x HDMI
Supports HDMI 2.1, maximum resolution 4K 60Hz*
1x DisplayPort
Supports DisplayPort 1.4, maximum resolution 4K 60Hz*
*Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.
Expansion Slots
Slots 2x PCI-E x16 Slots
1x PCI-E x1 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 4.0 supports up to x4 (From Chipset)
PCI_E1 Slot – PCIe 4.0 x16 (Ryzen 9000 / 7000)
– PCIe 4.0 x8 (Ryzen 8700 / 8600 / 8400)
– PCIe 4.0 x4 (Ryzen 8500 / 8300)
Audio
Codec Realtek ALC897
Channels 7.1-Channel High Definition Audio
Storage
Configuration 2x M.2
M.2_1 (From CPU): PCIe 5.0 x4, supports 22110/2280 devices
M.2_2 (From CPU): PCIe 4.0 x4, supports 2280/2260 devices
4x SATA 6G
M.2_1 Slot – PCIe 5.0 x4 (Ryzen 9000 / 7000)
– PCIe 4.0 x4 (Ryzen 8000)
M.2_2 Slot – PCIe 4.0 x4 (Ryzen 9000 / 8700 / 8600 / 8400 / 7000)
– PCIe 4.0 x2 (Ryzen 8500 / 8300)
Notes * Refer to the manual for M.2 SSD heatsink restrictions.
RAID
Support Supports RAID 0, RAID 1, and RAID 10 for SATA storage devices
Supports RAID 0 and RAID 1 for M.2 NVMe storage devices
USB
Configuration 4x USB 2.0 (Front)
4x USB 5Gbps Type-A (Rear)
2x USB 5Gbps Type-A (Front)
3x USB 10Gbps Type-A (Rear)
1x USB 10Gbps Type-C (Rear)
1x USB 10Gbps Type-C (Front)
LAN
Port Realtek 8125 2.5G LAN
Internal I/O
Connectors 1x ATX Power (ATX_PWR)
2x CPU Power (CPU_PWR)
1x PCIE Power (8-pin)
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 (JARGB_V2)
1x RGB LED (JRGB)
1x TPM Header (Supports TPM 2.0)
4x USB 2.0 Ports
2x USB 5Gbps Type-A Ports
1x USB 10Gbps Type-C Port
Wireless LAN & Bluetooth
Type Wi-Fi 6E
Module Pre-installed in the M.2 (Key-E) slot
Performance Supports MU-MIMO TX/RX, 2.4GHz / 5GHz / 6GHz* (160MHz) up to 2.4Gbps
Supports 802.11 a / b / g / n / ac / ax
Supports Bluetooth 5.3, FIPS, FISMA
Notes * Wi-Fi 6E 6GHz band support may depend on regional regulations and requires Windows 11.
** Bluetooth 5.3 will be ready on Windows 10 build 21H1 and Windows 11.
LED Features
Indicators 4x EZ Debug LED
1x EZ Memory Detection LED
Back Panel Ports
Configuration

  1. Clear CMOS Button
  2. DisplayPort
  3. 2.5G LAN
  4. USB 10Gbps Type-A
  5. USB 5Gbps Type-A
  6. Wi-Fi / Bluetooth
  7. Audio Connectors
  8. Flash BIOS Button
  9. HDMI
  10. USB 10Gbps Type-A
  11. USB 10Gbps Type-C
Operating System
Support Windows 11 64-bit
Box Content
INCLUDES
PCB INFO
ATX
243.84mmx304.8mm

Overview

MSI PRO B850-S WIFI6E – Modern Connectivity, Professional Stability

The MSI PRO B850-S WIFI6E is engineered for creators and professionals who demand reliable performance and future-ready features without unnecessary frills. Compatible with AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors, it delivers a stable platform for productivity and content creation using the AM5 socket.

This board supports dual-channel DDR5 memory with speeds reaching 8200+ MT/s (OC), offering fast data access and excellent multitasking capabilities. Built with a 12+2+1 Duet Rail Power System, dual 8-pin CPU power connectors, plus Core Boost and Memory Boost technologies, it ensures clean and consistent power delivery even under heavy load. The 6-layer PCB crafted from 2oz thickened copper and server-grade materials further enhances durability and signal integrity.

Thermal performance is addressed via the Frozr Guard cooling design, featuring high-conductivity MOSFET thermal pads rated at 7 W/mK and an M.2 Shield FROZR, ensuring steady temperatures during demanding workloads. Storage and expansion include a PCIe 4.0 slot and a Lightning Gen 5 x4 M.2 slot for fast NVMe SSDs and modern GPU support.

For networking, the PRO B850-S WIFI6E includes Wi-Fi 6E, Bluetooth, and 2.5G LAN, providing fast and stable connectivity tailored for professional applications and streaming. Installation and upgrades are simplified with EZ DIY features like EZ M.2 Clip II, EZ PCIe Clip II, and an EZ Antenna. For audio, the board features Audio Boost for immersive, studio-quality sound.

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