Overview

The MSI PRO B840-P WIFI is an ATX motherboard built around AMD's B840 chipset, designed for Socket AM5 processors. It supports Ryzen 9000, 8000, and 7000 series CPUs and APUs, making it a versatile foundation for a wide range of AMD builds. With DDR5 memory support, this board lets you take advantage of the latest memory technology without stepping up to a premium-priced chipset.
A silver-white heatsink design gives the board a clean, understated look that blends into most PC cases. MSI has also included several user-friendly touches, such as the EZ M.2 Clip II system that lets you install or remove M.2 SSDs without any tools, and an enlarged graphics card release clip that makes GPU removal a one-finger operation.
On the connectivity front, the board includes Wi-Fi 7 and Bluetooth 5.4 for wireless networking, plus a 2.5GbE LAN port for wired connections. As an official Japanese authorized product, it comes with a three-year warranty, which adds peace of mind for long-term use.

Compatibility Guide

This motherboard uses the Socket AM5 platform, which means it works exclusively with AMD Ryzen 9000, 8000, and 7000 series processors. Intel CPUs are not compatible, so be sure to verify your processor choice before purchasing.
Memory support is limited to DDR5 UDIMM modules across four slots. The board supports speeds up to DDR5 8000+ with overclocking, and EXPO profiles are supported for one-click memory tuning. DDR4 memory is physically incompatible and cannot be installed.
For expansion, the board offers one PCIe 4.0 x16 slot, one PCIe 3.0 x16 slot, and three PCIe 3.0 x1 slots. Storage options include two M.2 slots running at PCIe 4.0 x4 speeds and four SATA 3.0 ports. The ATX form factor fits standard ATX cases without issue, and the board requires a standard 24-pin ATX power connector plus an 8-pin EPS connector. See the spec table for recommended PSU wattage.

Product Info

The MSI PRO B840-P WIFI is positioned as an entry-to-mid-range motherboard within the AM5 ecosystem. It offers broad Ryzen 9000 series compatibility while keeping costs down compared to higher-end chipsets, making it a sensible choice for budget-conscious builders.
Key specifications include four DDR5 UDIMM slots, one PCIe 4.0 x16 slot, one PCIe 3.0 x16 slot, and three PCIe 3.0 x1 slots. Storage is handled by two M.2 slots (PCIe 4.0 x4) and four SATA 3.0 ports. The rear I/O includes HDMI 2.1, USB 3.2 Gen 2 Type-C, USB 3.2 Gen 2 Type-A, USB 3.2 Gen 1 Type-A, and USB 2.0 ports.
Wireless connectivity covers Wi-Fi 7 and Bluetooth 5.4, while the wired side features a 2.5GbE LAN port. Audio is provided by a 7.1ch HD Audio Codec. The board supports Windows 10 and Windows 11 in 64-bit versions.

Best Use Cases

First-time AM5 builders looking for an affordable entry point will find this board ideal. The B840 chipset covers essential features without the premium price of higher-tier options, and the tool-free M.2 installation system simplifies the build process significantly. It's a great match for someone assembling their first Ryzen 9000 system.
The clean silver-white heatsink design also appeals to users who prefer a minimalist aesthetic. If you're building a PC for an office, living room, or any setting where you want a subdued look without RGB lighting, this board fits right in.
However, enthusiasts who want PCIe 5.0 support for the latest graphics cards or ultra-fast NVMe SSDs should look elsewhere. The board's expansion slots are limited to PCIe 4.0, which will bottleneck the absolute fastest storage and GPU options available today.

Things to Consider

This motherboard does not support PCIe 5.0. If you plan to use a PCIe 5.0 graphics card or SSD, performance will be limited to PCIe 4.0 bandwidth. While the real-world impact is often minimal, those who want future-proofing should consider a higher-end chipset.
The two M.2 slots are both PCIe 4.0 x4, which is sufficient for most users but may feel restrictive if you need multiple high-speed NVMe drives. The four SATA ports are also modest compared to some competitors, so plan your storage configuration carefully.
Overclocking features on the B840 chipset may be more limited than on X870 or X670 boards. If you're an enthusiast who wants detailed CPU tuning options like PBO adjustments, a higher-tier chipset would be a better investment.

FAQ

Q: Can I use a Ryzen 5 7600 with this motherboard?
A: Yes, the Ryzen 7000 series uses Socket AM5, which this board supports. It also works with Ryzen 9000 and 8000 series processors, giving you a wide range of CPU choices.
Q: Does this board support DDR4 memory?
A: No, this motherboard only supports DDR5 memory. DDR4 modules have a different physical layout and cannot be inserted. You'll need to purchase DDR5 memory separately.
Q: Is Wi-Fi 7 usable in Japan?
A: Yes, Wi-Fi 7 (IEEE 802.11be) is available for use in Japan.

Product Disclosure (Amazon)

  • Manufacturer: MSI
  • Seller: Amazon.co.jp
  • Fulfilled by: Amazon.co.jp
  • ASIN: B0DPKTYFH9
  • Note: This article covers a manufacturer-made product based on Amazon listing details.