Motherboard MSI PRO B840M-B AM5

MSI PRO B840M-B AM5 is a Micro ATX motherboard for the AM5 platform, aimed at stable, practical builds with Ryzen™ 9000, 8000, and 7000 processors. It combines the current AMD B840 chipset with support for DDR5 memory up to 8000MHz (O.C.), allowing you to get the most out of the new Ryzen. Despite the compact form factor, you get two M.2 slots directly from the CPU and a decent set of USB ports for a modern configuration. The board is a sensible choice if you're looking for an AM5 system without unnecessary extras, but with the important features in place.

What you get

The AM5 socket gives you the option for a wide range of Ryzen™ 9000, 8000, and 7000 series – from more affordable to more serious multi-core CPUs. The memory is DDR5 with two slots and a maximum capacity of 128 GB, which means you can start with 2x16 or 2x24 GB and later upgrade to larger modules without changing the motherboard. The two M.2 PCIe 4.0 x4 slots (both from the CPU) are ideal for fast NVMe SSDs – one for OS and games, the second for projects, media, or work files. The four SATA3 6.0 Gb/s ports and RAID 0/1/10 support allow you to create a stable storage array for backup or higher speed with more drives. The built-in 7.1-channel Realtek ALC897 audio is more than sufficient for gaming and multimedia without an additional sound card.

• The AM5 socket supporting Ryzen™ 9000, 8000, and 7000 processors gives you a current platform with options for future upgrades.
• Two slots for DDR5 memory with a capacity of up to 128 GB and frequencies up to 8000MHz (O.C.) allow for a fast and large RAM configuration in dual-channel mode.
• Two M.2 PCIe 4.0 x4 slots from the CPU, supporting devices up to 2280/2260, provide a high-speed NVMe storage solution for the operating system and games.
• Four SATA3 6.0 Gb/s ports and RAID 0/1/10 support offer flexibility for combining SSD and HDD according to your needs.
• The main PCIe x16 slot supports PCIe 4.0 with various configurations (x16, x8, x4 depending on the Ryzen series), which is more than sufficient for modern GPUs.
• The second PCI-E x1 slot (PCIe 3.0) allows for the addition of extra cards such as sound, capture, or network adapters.
• Multiple USB ports – 2x USB 2.0 Rear, 4x USB 2.0 Front, 4x USB 5Gbps Type-A Rear, 2x USB 5Gbps Type-A Front, and 1x USB 5Gbps Type-C Front – provide ample connectivity for peripherals, storage, and front panels.
• Integrated 7.1-Channel High Definition Audio with Realtek ALC897 codec offers decent sound performance for gaming, movies, and music.
• Built-in LAN port takes care of wired network connectivity, while the lack of Wi‑Fi leaves the choice of a separate card or external adapter if you need wireless.

Who it is suitable for

This motherboard is suitable for compact gaming and work builds on AM5, where you seek a stable foundation, DDR5, and PCIe 4.0, without paying for extras like built-in Wi‑Fi. It is a good choice for office/productivity machines, budget to mid-range gaming PCs, and systems with plenty of storage thanks to 2x M.2 and 4x SATA. If you are aiming for extreme overclocking or need more RAM slots and additional PCIe lanes, you should rather look towards higher-end boards.

The combination of AM5 support, DDR5 up to 8000MHz (O.C.), two PCIe 4.0 M.2 slots, and decent IO makes MSI PRO B840M-B AM5 a very sensible base for a modern and balanced build. You get a current platform with a clear upgrade path and without unnecessary noise.