MSI B840M GAMING WIFI6E GAMING Motherboard

AMD B840 mATX Motherboard for Ryzen 7000/8000/9000 Series – Full Specs

Upgrade your PC with this feature-rich AMD B840 micro-ATX motherboard, designed for Ryzen 7000, 8000, and 9000 Series desktop processors. Combining high-speed DDR5 support, PCIe 4.0 expansion, Wi-Fi 6E, and modern connectivity, it’s perfect for gaming, content creation, and high-performance computing.

CPU Support

• Supports AMD Ryzen 7000 / 8000 / 9000 Series desktop processors.

• Socket: AM5 for next-gen Ryzen CPUs.

• Chipset: AMD B840.

• Flash BIOS Button allows easy CPU updates without installing a CPU.

Form Factor

• Micro-ATX (mATX) – compact design for mid-size cases.

• Dimensions: 226mm x 243.84mm.

Memory (RAM)

• DDR5 Memory support, 2 × UDIMM slots.

• Compatible speeds: DDR5 4800–5600 MT/s (JEDEC); overclockable up to DDR5 8000 MT/s.

• Supports:

  • Dual-channel mode

  • AMD EXPO™ memory profiles

  • Non-ECC, unbuffered memory

Expansion Slots

• 2 × PCIe x16 slots:

  • PCI_E1 (CPU):

    • Ryzen 9000/7000: PCIe 4.0 x16

    • Ryzen 8700/8600/8400: PCIe 4.0 x8

    • Ryzen 8500/8300: PCIe 4.0 x4

  • PCI_E2 (chipset): PCIe 3.0 x4

• Supports GPUs, NVMe expansion cards, and other PCIe devices.

Storage Options

• 2 × M.2 PCIe 4.0 x4 slots (2280/2260 SSDs)

• 4 × SATA 6Gb/s ports

• RAID support: RAID 0, 1, 10 for SATA drives

Graphics Outputs

• 1 × HDMI 2.1 – up to 4K @ 60Hz

• 1 × DisplayPort 1.4 – up to 4K @ 60Hz

• Supports integrated graphics for Ryzen G-series APUs.

Audio

• Realtek ALC897 Codec

• 7.1-channel high-definition audio

Networking

• 2.5G LAN – Realtek 8125D

• Wi-Fi 6E & Bluetooth 5.3 (pre-installed M.2 Key-E module)

• Supports MU-MIMO, 2.4GHz / 5GHz / 6GHz (160MHz) up to 2.4 Gbps

USB Ports

• Rear USB:

  • 2 × USB 2.0

  • 4 × USB 5Gbps Type-A

• Front USB:

  • 4 × USB 2.0

  • 2 × USB 5Gbps Type-A

  • 1 × USB 5Gbps Type-C

Internal Headers & Connectivity

• Power: 1 × ATX_PWR, 1 × CPU_PWR

• Fans: 1 × CPU fan, 2 × system fans

• RGB: 3 × addressable RGB, 1 × RGB

• TPM 2.0 header, chassis intrusion, front panel connectors, front audio, and serial port

Key Features

• Full AM5 and Ryzen 9000/8000/7000 support

• DDR5 memory overclocking with AMD EXPO™

• Dual M.2 PCIe 4.0 slots + RAID support

• Wi-Fi 6E and 2.5G LAN for ultra-fast connectivity

• Modern USB 5Gbps Type-A and Type-C ports

• Compact mATX form factor ideal for small to mid-size builds

• RGB headers for customizable lighting

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