MSI PRO B840M-B AMD B840 AM5 2x DDR5 M.2 mATX

AMD processor performance in the MSI PRO B840M-B board

The MSI PRO B840M-B motherboard is designed for building modern PC systems based on powerful AMD Ryzen processors. This model supports AMD Ryzen 7000, 8000 and 9000 series processors, making it suitable for demanding work and multimedia entertainment. There are two slots for RAM with a maximum capacity of 64 GB. DDR5 RAM will support smooth response when working with multiple applications.

Core Boost technology ensures maximum performance of multi-core processors under any load. The power supply design ensures stable power supply and reliable operation. The MSI PRO B840M-B motherboard is equipped with Audio Boost technology, which will reward you with premium sound. Reliable network operation will be supported by 2.5G LAN platform.

MSI PRO B840M-B

The board is equipped with graphics outputs for use with processors with integrated graphics core. The motherboard does not include a graphics card and without using the corresponding processor, these outputs will be inoperative.

CPU

Support for AMD Ryzen 7000, 8000 and 9000 series processors (AM5 socket)

Chipset

• AMD B840

Memory

• 2× DDR5 memory slot, support up to 128 GB
• Support DDR5 8000-5600 (OC) MT/s / 5600-4800 (JEDEC) MT/s
• 1DPC 1R max. speed up to 8000+ MT/s
• 1DPC 2R max. speed up to 7200+ MT/s
• CUDIMM support in Clock Driver bypass mode
• Dual-channel memory architecture
• Non-ECC support, unbuffered
• AMD EXPO support

Slots

• 1× PCIe 4.0 x16 slot
• Ryzen 9000/ 7000 series supports PCIe 4.0 x16
• Ryzen 8700/ 8600/ 8400 series supports PCIe 4.0 x8
• Ryzen 8500/ 8300 series supports PCIe 4.0 x4
• 1× PCIe 3.0 x1 slot

Graphics

• 1× HDMI 2.1 port, supporting max. resolution 4K @ 60 Hz
• 1× VGA port, supporting max. resolution 2048 × 1536 @ 50 Hz/ 2048 × 1280 @ 60 Hz

Storage

• 1× M.2 _1 slot, M Key, for type 2280/2260 drives (PCIe 4.0 x4 mode)
• 1× M.2 _2 slot *, M Key, for type 2280/2260 drives (PCIe 4.0 x4 mode)
• 4× SATA 6 Gb/s port
• RAID 0, RAID 1 and RAID 10 support for SATA drives
• RAID 0 and RAID 1 support for M.2 NVMe drives
• Ryzen 8500/ 8300 series supports PCIe 4.0 x2

USB

• 6× USB 2.0 (2 ports on the back panel, 4 ports available via internal USB connectors)
• 6× USB 3.0 (4 ports on rear panel, 2 ports accessible via internal USB connector)
• 1× USB-C 3.0 accessible via internal USB connector

Audio

• Realtek ALC897 Codec
• 7.1-channel High Definition Audio

LAN

• 1× Realtek 8125D 2.5Gigabit LAN controller

Internal connectors

• 1× 24pin ATX main power connector
• 1× 8pin ATX 12V power connector
• 1× 4pin CPU fan connector
• 2× 4pin system fan connector
• 2× front panel connector
• 1× chassis intrusion detection connector
• 1× front panel audio connector
• 1× serial port connector
• 3× 3pin A-RAINBOW V2 LED (ARGB Gen2) connector
• 1× 4pin RGB LED connector
• 1× TPM module connector (supports TPM 2.0)
• 4× internal USB 2.0 connector
• 2× internal USB 3.0 connector
• 1× internal USB-C 3.0 connector
• 4× SATA 6 Gb/s connector
• 2× M.2 slot, M Key

Connectors on the rear panel

• 1× Flash BIOS button
• 1× Clear CMOS button
• 1× HDMI
• 1× VGA
• 1× RJ-45
• 4× USB 3.2 Gen1 (USB 3.0)
• 2× USB 2.0
• 3× audio jack

Dimensions

• 243.84 × 226 mm
• mATX format