Product Overview

The MSI MPG B550 GAMING PLUS is an ATX form factor motherboard built around the AMD B550 chipset. It supports AMD Ryzen 5000 Series and 3000 Series desktop processors, offering stable power delivery and ample expansion for building a balanced mid-range gaming or creator PC.

Key Features

  • Expansion-Focused ATX Form Factor: The standard ATX size provides multiple PCIe slots, M.2 slots, and SATA ports, making it easy to add storage and expansion cards.
  • Enhanced Power Design: Features an extended heatsink design on the power stages to ensure stable power delivery to the CPU even under heavy loads.
  • High-Speed Connectivity: Includes one PCIe 4.0 ready M.2 slot to unlock the full speed of modern NVMe SSDs. It also comes with a 2.5G LAN port for fast wired networking.
  • MSI BIOS and Software: Offers a user-friendly graphical BIOS interface and the MSI Dragon Center software for system monitoring and customization.
  • ARGB LED Support: Features onboard LEDs and multiple addressable RGB LED headers, allowing for unified lighting control inside your PC case.

Compatibility Guide

Before choosing this motherboard, be sure to verify the following compatibility points.

  • CPU Socket: It uses the Socket AM4. Compatible CPUs are the Ryzen 5000 Series (Vermeer) and Ryzen 3000 Series (Matisse). A BIOS update may be required to use Ryzen 5000 Series CPUs, depending on the shipped BIOS version.
  • Memory: Supports DDR4 memory. The maximum official capacity is 128GB, with speeds up to DDR4-4400 (OC). For best stability, consider choosing memory kits listed on the manufacturer's QVL (Qualified Vendor List).
  • Form Factor: ATX (305mm x 244mm). It fits most mid-tower and full-tower PC cases but will not fit in smaller cases designed for Micro-ATX or Mini-ITX motherboards.
  • Storage: Equipped with 2 M.2 slots (one is PCIe 4.0 ready) and 6 SATA 6Gb/s ports. Note that two of the SATA ports may be disabled when certain M.2 SSDs are used, as they share resources. Consult the manual for details.

Ideal Builds

This motherboard is an excellent choice for users planning the following types of PC builds:

  • Cost-Effective Gaming PC with Room to Grow: Paired with a Ryzen 5 5600X or Ryzen 7 5800X and a graphics card like the GeForce RTX 3060 Ti or Radeon RX 6700 XT. The ATX layout leaves room for future storage additions or expansion cards like a capture card.
  • Stable Home Office or Creative Workstation: The numerous SATA ports allow for adding multiple HDDs or SSDs, and the 2.5G LAN facilitates fast transfers of large files. Combined with a Ryzen 7 processor and sufficient RAM, it can form a reliable platform for photo and video editing tasks.

Upgrade Considerations

If you are upgrading from an existing system or planning future upgrades, keep these points in mind:

  • CPU Upgrade Ceiling: The highest CPU generation supported by this motherboard is the Ryzen 5000 Series, which is effectively the final generation for the AM4 socket. An upgrade to a next-generation AM5 socket CPU is not possible. If you plan for long-term CPU upgrades, you should consider an AM5 platform motherboard.
  • PCIe 4.0 Requirements: To utilize PCIe 4.0 on the first M.2 slot (CPU-connected), you need a Ryzen 3000 Series (Matisse) or newer CPU. It will operate at PCIe 3.0 with older Ryzen 2000 Series or earlier CPUs. Also, only the primary graphics card slot is PCIe 4.0 ready.
  • Power Supply Capacity Check: While the motherboard's power design is robust, if you plan to pair a high-power CPU (e.g., Ryzen 9 5900X/5950X) with a high-performance graphics card, you must ensure your system's Power Supply Unit (PSU) has sufficient wattage for the entire build.

Product Disclosure (Amazon)

  • Manufacturer: MSI
  • Seller: Amazon.co.jp
  • Fulfilled by: Amazon.co.jp
  • Model: MPG B550 GAMING PLUS/A
  • ASIN: B0BCJF6RLC
  • Note: This article covers a manufacturer-made product based on Amazon listing details.