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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 Socket TypeAM5
  • ChipsetAMD B850
  • Number of Memory Slots4x288pin (DDR5)
  • Maximum Memory Supported256GB
  • Channel SupportedDual Channel
  • ECC SupportedNon-ECC
  • 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.

Highlights

  • 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

Specifications

BrandMSI
ModelMAG B850 GAMING PLUS MAX WIFI+R7 9800X3D
CPU Socket TypeAM5
ChipsetAMD B850
Number of Memory Slots4x288pin (DDR5)
Maximum Memory Supported256GB
Channel SupportedDual Channel
ECC SupportedNon-ECC
Buffer SupportedUn-buffered
PCI Express 4.0 x161 x PCI Express 4.0 x16
PCI Express 3.0 x161 x PCI Express 3.0 x16
M.23 x M.2 (Support PCIe 5.0 x4, PCIe 4.0 x4, PCIe 4.0 x2)
Onboard Video ChipsetDepends on installed processor
Audio ChipsetRealtek ALC897
Audio Channels7.1 Channels
LAN ChipsetRealtek 8126
Max LAN Speed5Gbps
BluetoothYes
Back I/O Ports4 x USB 2.0
1 x USB 5Gbps Type-A
1 x USB 10Gbps Type-A
2 x USB 10Gbps Type-C
1 x DisplayPort
COM1
DisplayPort1 x DisplayPort
Onboard USB4 x USB 5Gbps + 4 x USB 2.0 + 1 x USB Type-C header, with USB 5Gbps
Form FactorATX
LED LightingRGB
Dimensions (W x L)243.84mm x 304.8mm

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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