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ATX motherboard in dark finish with silver heatsinks, AM5 socket, four DDR5 slots, triple M.2 shields, rear I/O with USB-C and 5G LAN

MSI

MSI MAG B850 GAMING PLUS MAX WIFI AMD motherboard & Ryzen 7 9800X3D CPU combo

SKU CH-VW8Q-4BN3N

A socket AM5 motherboard and Ryzen 7 9800X3D processor bundle with DDR5 memory support up to 8200 MT/s, PCIe 5.0 M.2 slots, Wi-Fi 7 and 5 Gbps LAN

  • CPU socketAM5
  • ChipsetAMD B850
  • Form factorATX
  • Memory slot count4 × 288pin (DDR5)
  • Max supported RAM256 GB
  • Memory channelsDual Channel
  • 64 MB BIOS enables future CPU upgrades with better compatibility
  • OC Engine clock generator releases maximum CPU power for overclocking
  • EZ PCIe Release button simplifies graphics card installation and removal
  • Triple M.2 slots with PCIe 5.0 and Shield Frozr cooling deliver fast storage
  • Wi-Fi 7 with 160 MHz channel and 5G LAN provide high-speed networking

AM5 socket with Ryzen 7 9800X3D

This bundle pairs an MSI MAG B850 GAMING PLUS MAX WIFI motherboard with an AMD Ryzen 7 9800X3D processor for the AM5 platform. The board delivers a 64MB BIOS for future CPU compatibility, dual-channel DDR5 memory support up to 8200+ MT/s OC, PCIe 5.0 x16 graphics bandwidth, and three M.2 slots including one Gen5. Wireless connectivity comes via Wi-Fi 7 with a 160MHz channel and 2.9Gbps peak speed, plus a Realtek 8126 5Gbps LAN port.

Gamers and builders targeting high frame rates

The Ryzen 7 9800X3D suits enthusiasts who prioritise gaming responsiveness and want a drop-in AM5 solution with strong memory overclocking headroom. Users needing ECC memory, more than four DIMM slots, or workstation-class I/O should consider alternative platforms.

PCIe 5.0 M.2 slot for fastest storage

One of the three M.2 connectors runs at PCIe 5.0 x4, providing up to 128GB/s bandwidth for compatible SSDs. This single specification determines whether your storage drive can saturate the interface.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $796.99
Pricier than about 78% of the 1,906 comparable items (median $224.49).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameMSI
Model nameMAG B850 GAMING PLUS MAX WIFI+R7 9800 × 3D
Processor
CPU socketAM5
ChipsetAMD B850
Memory
Memory slot count4 × 288pin (DDR5)
Max supported RAM256 GB
Memory channelsDual Channel
ECC supportNon-ECC
BufferingUn-buffered
Storage
M.2 slots3 x M.2 (Support PCIe 5.0 x4, PCIe 4.0 x4, PCIe 4.0 x2)
Graphics
Onboard video chipDepends on installed processor
Audio & video
Audio chipRealtek ALC897
Sound channels7.1 Channels
Connectivity
Ethernet controllerRealtek 8126
Maximum network speed5 Gbit/s
Bluetooth supportYes
Ports & slots
PCIe 4.0 x16 slots1 x PCI Express 4.0 x16
PCIe 3.0 x16 slots1 x PCI Express 3.0 x16
Rear panel ports4 x USB 2.0
1 x USB 5 Gbit/s Type-A
1 x USB 10 Gbit/s Type-A
2 x USB 10 Gbit/s Type-C
1 x DisplayPort
Serial ports1
DisplayPort connectors1 x DisplayPort
Onboard USB headers4 x USB 5 Gbit/s + 4 x USB 2.0 + 1 x USB Type-C header, with USB 5 Gbit/s
Size & build
Form factorATX
Width and length243.84 mm × 304.8 mm
More details
LightingRGB

Questions about this item

Will the Ryzen 7 9800X3D run in this board without a BIOS update?

The board ships with a 64MB BIOS ROM designed for next-level CPU upgrades, so the 9800X3D is supported out of the box.

What is the fastest DDR5 speed the combo can reach?

The motherboard lists DDR5 Memory Boost up to 8200+ MT/s when overclocked, with four 288-pin slots supporting 256GB total.

Can I add a PCIe 5.0 graphics card and a Gen5 M.2 SSD at the same time?

Yes — the board provides one PCIe 5.0 x16 slot and one M.2 connector wired for PCIe 5.0 x4, both usable simultaneously.

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