This article covers MSI PRO A620AM-B EVO Micro-ATXマザーボード MB6924.

Overview

MSI PRO A620AM-B EVO (model MB6924) is a Micro-ATX motherboard built around the AMD A620A chipset and Socket AM5, supporting Ryzen 9000, 8000, and 7000 series processors. It delivers DDR5 memory support, PCIe 4.0, and a 2.5G LAN port at a price point that makes it one of the most affordable entry points to the AM5 platform.
This board is designed for budget-conscious builders, office PCs, and light gaming rigs. With a single M.2 Gen4 slot, two DDR5 DIMM slots, and Realtek 2.5G Ethernet, it covers the basics without unnecessary frills. The compact Micro-ATX form factor fits most mid-tower cases, making it a solid choice for first-time PC builders or those looking to upgrade from older platforms without overspending.

Compatibility Guide

The PRO A620AM-B EVO uses Socket AM5 and is compatible with AMD Ryzen 9000, 8000, and 7000 series processors. Memory support includes two DDR5 DIMM slots (up to 128GB total) with speeds up to 6800 MT/s when overclocked, leveraging MSI Memory Boost technology. Expansion includes one PCIe 4.0 x16 slot and one PCIe 3.0 x1 slot, along with a single M.2 Gen4 slot (up to 64 Gbps) and two SATA3 ports.
The board conforms to the Micro-ATX standard (218 × 243.84 mm) and fits cases designed for Micro-ATX or larger. Power delivery uses a standard 24-pin ATX connector plus an 8-pin CPU power connector. For typical Ryzen 5 builds, a 500W–650W PSU is sufficient; for Ryzen 7 or 9 with a discrete GPU, a 650W–750W unit is recommended.

Product Info

MSI introduced the PRO A620AM-B EVO in late 2024 as an entry-level AM5 motherboard. Pricing in Japan hovers around ¥11,500, making it one of the cheapest ways to get onto the DDR5 platform. It comes with a 3-year warranty. The A620A chipset omits CPU overclocking but provides stable operation for everyday tasks. The Realtek 2.5G LAN ensures fast wired networking, while the HDMI 2.1 and VGA outputs allow multi-monitor setups with CPUs that have integrated graphics. Market positioning is firmly at the entry tier — ideal for users who prioritize cost over overclocking or PCIe 5.0.

Best Use Cases

  • Office and Productivity Builds: Pair with a Ryzen 5 7600 for snappy response in spreadsheets, web browsing, and video conferencing. The DDR5 support and 2.5G LAN make it future-ready for remote work.
  • First-Time PC Builder: The low price reduces financial risk, and the included quick-install guide and EZ M.2 Clip simplify assembly. Perfect for learning the ropes of AMD's current platform.
  • Budget Home Server / NAS: Low power draw, stable chipset, and 2.5G LAN suit file serving or media streaming. The M.2 slot can host a fast boot drive.
    Not recommended for:
  • Enthusiasts who want overclocking: A620 chipset locks CPU multiplier and PBO. Look at B650 boards.
  • Users needing many expansion slots: Only one PCIe x16 and one M.2 slot. SATA is limited to two ports.

Things to Consider

The A620A chipset lacks CPU overclocking support, including Precision Boost Overdrive. For users who want to squeeze extra performance from Ryzen 9 chips, this board is not suitable. The two DIMM slots limit memory upgrade paths; if you anticipate needing 64GB or more, consider a four-slot B650 board. The single M.2 slot means you will likely need SATA SSDs for additional storage — a potential bottleneck for large game libraries.
The rear I/O includes only HDMI 2.1 and VGA, so DisplayPort monitors require an adapter or a discrete GPU. The PCIe 4.0 x16 slot is sufficient for today's GPUs, but PCIe 5.0 support is absent. Overall, the PRO A620AM-B EVO is a no-frills board that demands careful consideration of your expansion requirements before purchase.

FAQ

Q: Does the MSI PRO A620AM-B EVO support Ryzen 9000 out of the box?
A: The product page lists compatibility with Ryzen 9000, 8000, and 7000 series. However, very early production units may need a BIOS update. Check with the retailer for the installed BIOS version before buying.
Q: How does this compare to a B650 board?
A: B650 boards offer CPU overclocking, PCIe 5.0 x16, and typically more M.2 slots and USB ports. The A620A chipset lacks those features but costs significantly less. If you do not overclock and only need one fast SSD, the A620A delivers excellent value.
Q: Can I use this motherboard for gaming?
A: Yes, with a suitable CPU and GPU. For example, a Ryzen 5 7600 paired with an RTX 4060 can handle 1080p gaming at high settings. However, the lack of CPU overclocking may limit performance in CPU-bound titles.

Product Disclosure (Amazon)

  • Manufacturer: MSI
  • Seller: Amazon.co.jp
  • Fulfilled by: Amazon.co.jp
  • ASIN: B0G2BN7W7S
  • Note: This article covers a manufacturer-made product based on Amazon listing details.