MSI PRO B850M-G Motherboard – AM5, DDR5, PCIe 5.0, 5G LAN

Overview

The MSI PRO B850M-G is a powerful and future-ready micro-ATX motherboard designed for modern AMD desktop platforms. Built on the AMD B850 chipset and featuring the AM5 socket, it supports AMD Ryzen™ 9000, 8000, and 7000 Series processors. With advanced DDR5 memory support, PCIe 5.0 expansion, and 5G LAN connectivity, this motherboard is ideal for productivity systems, gaming PCs, and professional desktop builds.

AM5 Platform and Ryzen Compatibility

The MSI PRO B850M-G is engineered to support the latest AMD Ryzen processors, delivering excellent performance and long-term upgrade potential.

• Supports AMD Ryzen™ 9000 / 8000 / 7000 Series desktop CPUs

• AM5 socket for next-generation AMD platforms

• Optimized power delivery for stable operation

Advanced DDR5 Memory Support

This motherboard features two DDR5 UDIMM slots with a maximum capacity of 128GB, supporting both JEDEC and overclocked memory profiles.

• DDR5 speeds up to 8200+ MT/s (OC)

• Dual-channel memory architecture

• Supports AMD EXPO and memory overclocking

• Compatible with Non-ECC, unbuffered memory

• Supports CUDIMM (Clock Driver bypass mode only)

Memory performance may vary depending on CPU and module configuration.

PCIe 5.0 Expansion and Graphics Support

The PRO B850M-G offers next-generation expansion capabilities for modern GPUs and high-speed devices.

• PCIe 5.0 x16 slot (from CPU)

• Secondary PCIe 4.0 x16 slot (x4 mode from chipset)

Slot bandwidth support varies by CPU series, ensuring compatibility across Ryzen generations.

High-Speed Storage Options

Designed for fast data access and flexible storage configurations, this motherboard includes:

• 2× M.2 slots

  • M.2_1: PCIe 5.0 x4 (Ryzen 9000/7000), PCIe 4.0 x4 (Ryzen 8000)

  • M.2_2: PCIe 4.0 x4 (or x2 on select CPUs)

• 4× SATA 6Gb/s ports

• RAID support for SATA and NVMe storage

Integrated Graphics Output

For processors with integrated graphics, the motherboard provides modern display connectivity:

• HDMI 2.1, up to 4K @ 60Hz

• DisplayPort 1.4, up to 4K @ 60Hz

Actual display capabilities depend on the installed CPU.

5G LAN and Connectivity

The MSI PRO B850M-G features Realtek 5G LAN, offering ultra-fast and stable wired networking for demanding workloads and online gaming.

USB and Front Panel Connectivity

A wide selection of USB ports ensures compatibility with modern peripherals:

• USB 10Gbps Type-C (front)

• USB 5Gbps Type-A and Type-C (rear and front)

• USB 2.0 ports for legacy devices

Audio and Debug Features

• Realtek ALC897 7.1-channel High Definition Audio

• EZ Debug LEDs for quick system diagnostics

• EZ Memory Detection LED for RAM troubleshooting

Form Factor and Build Quality

• Micro-ATX PCB design

• Compact size for versatile case compatibility

• Designed for durability and long-term stability

Technical Specifications

Who Is This Motherboard For?

• Users building modern AM5 desktop systems

• Professionals needing fast networking and storage

• Gamers upgrading to PCIe 5.0 and DDR5

• Small-form-factor and compact PC builds

• Long-term AMD platform users

Why Choose the MSI PRO B850M-G?

• Supports latest AMD Ryzen CPUs

• DDR5 memory with extreme overclocking support

• PCIe 5.0 GPU and NVMe readiness

• Integrated 5G LAN for ultra-fast networking

• Reliable MSI PRO-series design

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