MSI B840M GAMING WIFI6E, AMD B840, AM5, 2xDDR5 128GB, PCIe 4.0 x16, 2xM.2 PCIe4, 2.5G LAN, Wi-Fi 6E, USB 5G, HDMI/DP, 2yr wty | B840M GAMING WIFI6E

MSI B840M GAMING WIFI6E, AMD B840, AM5, 2xDDR5 128GB, PCIe 4.0 x16, 2xM.2 PCIe4, 2.5G LAN, Wi-Fi 6E, USB 5G, HDMI/DP, 2yr wty

SPECIFICATION
Chipset
AMD B840

CPU
Supports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processors
Socket AM5

Memory
2x DDR5 UDIMM, Maximum Memory Capacity 128GB
Memory Support DDR5 8000 – 5600 (OC) MT/s / 5600 – 4800 (JEDEC) MT/s
Ryzen™ 9000 Series Processors max. overclocking frequency:
• 1DPC 1R Max speed up to 8000+ MT/s
• 1DPC 2R Max speed up to 7200+ MT/s

Supports AMD POR Speed and JEDEC Speed
Supports Memory Overclocking and AMD EXPOTM
Supports Dual-Channel mode
Supports Non-ECC, Un-buffered memory
Supports CUDIMM, Clock Driver bypass mode only*

* CUDIMM support and POR boot frequency may vary by CPU series, with manual overclocking available after boot. Certain CPUs may fail to boot, but future BIOS updates will improve compatibility.
• Memory compatibility and supported speeds can vary depending on the CPU and memory configuration. For detailed information, please refer to the Memory Compatibility List available on the product’s Support page or visit https://www.msi.com/support/.

Onboard Graphics
1x HDMI™
Support HDMI™ 2.1, maximum resolution of 4K 60Hz*
1x DisplayPort
Support DisplayPort 1.4, maximum resolution of 4K 60Hz*
*Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.

Slot
2x PCI-E x16 slot
PCI_E1 Gen PCIe 4.0 supports up to x16 (From CPU)
PCI_E2 Gen PCIe 3.0 supports up to x4 (From Chipset)

PCI_E1 slot
• Supports PCIe 4.0 x16 (For Ryzen™ 9000/ 7000 Series processors)
• Supports PCIe 4.0 x8 (For Ryzen™ 8700/ 8600/ 8400 Series processors)
• Supports PCIe 4.0 x4 (For Ryzen™ 8500/ 8300 Series processor)

Audio
Realtek® ALC897 Codec
7.1-Channel High Definition Audio

Storage
2x M.2
M.2_1 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
M.2_2 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
4x SATA 6G

*Please refer to the manual for M.2 SSD heatsink restrictions.
RAID Supports RAID 0, RAID 1 and RAID 10 for SATA storage devices

USB
2x USB 2.0 (Rear)
4x USB 2.0 (Front)
4x USB 5Gbps Type A (Rear)
2x USB 5Gbps Type A (Front)
1x USB 5Gbps Type C (Front)

LAN
Realtek® 8125D 2.5G LAN

LED FEATURE
4x EZ Debug LED
1x EZ Memory Detection LED

OPERATING SYSTEM
Support for Windows® 11 64-bit

Product Last Updated: 10/04/2026

* Whilst we endevour to have the correct information on our products provided from the supplier/manufacturer errors do occur. If you would like to double check the information, please feel free to contact us and we will be more than happy to confirm information on the item prior to purchase. In the event that product information is incorrect due to information we received from our supplier or manufacturer, we do not take responsibility or be held liable for damage(s) or loss(s). We will work with you and do our best to make the best of a bad situation and work with our supplier(s) and/or manufacturer(s) to supply the correct information for the item purchased etc..