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.

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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

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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.

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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.

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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

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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.

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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.

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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

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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

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Form Factor and Build Quality

• Micro-ATX PCB design

• Compact size for versatile case compatibility

• Designed for durability and long-term stability

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Technical Specifications

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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

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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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