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ATX motherboard in dark grey with silver heatsinks and included Ryzen 7 9700X CPU

MSI

MSI MAG B850 GAMING PLUS MAX WIFI AMD motherboard & Ryzen 7 9700X CPU Combo

SKU CH-AHSP-XGBWX

AM5 board with Wi-Fi 7, 5G LAN, triple M.2 and DDR5 up to 8200 MT/s paired with an 8-core 16-thread Ryzen 7 9700X boosting to 5.5 GHz

  • CPU Socket TypeAM5
  • ChipsetAMD B850
  • Number of Memory Slots4x288pin (DDR5)
  • Maximum Memory Supported256GB
  • Channel SupportedDual Channel
  • ECC SupportedNon-ECC
  • Ready for future CPUs with 64MB BIOS ROM capacity
  • Faster GPU installs using EZ PCIe Release button
  • Triple M.2 slots with PCIe 5.0 speed and Shield Frozr cooling
  • 5G LAN plus Wi-Fi 7 for high-speed networking
  • 8-core Ryzen 7 9700X hits 5.5 GHz boost clock

Combo for AM5 gaming builds

This bundle pairs the MSI MAG B850 GAMING PLUS MAX WIFI motherboard with the AMD Ryzen 7 9700X processor. The board uses the B850 chipset on the AM5 socket and supports DDR5 memory up to 8200 MT/s. The CPU delivers 8 cores and 16 threads based on the Zen 5 architecture with a maximum boost clock of 5.5 GHz.

Thermals noise and power draw

The motherboard includes a 64 MB BIOS ROM and an OC Engine clock generator for stable overclocking headroom. M.2 Shield Frozr II heatsinks cover the three M.2 slots to manage SSD temperatures. Realtek ALC897 audio provides 7.1 channel output while the 5G LAN and Wi-Fi 7 with 160 MHz channels handle networking.

Upgrade path from older AM4 systems

Moving from an AM4 platform brings PCIe 5.0 x4 storage support and DDR5 memory bandwidth. The EZ PCIe Release button and tool-less M.2 shields simplify hardware swaps. The jump is worthwhile when you need 5.5 GHz boost clocks, 5 Gbps wired LAN and Wi-Fi 7 speeds up to 2.9 Gbps.

商品特色

  • Ready for future CPUs with 64MB BIOS ROM capacity
  • Faster GPU installs using EZ PCIe Release button
  • Triple M.2 slots with PCIe 5.0 speed and Shield Frozr cooling
  • 5G LAN plus Wi-Fi 7 for high-speed networking
  • 8-core Ryzen 7 9700X hits 5.5 GHz boost clock

商品規格

BrandMSI
ModelMAG B850 GAMING PLUS MAX WIFI+R7 9700X
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

商品問答

How do I install the Ryzen 7 9700X into the AM5 socket and which step is often done wrong?

Lift the retention lever, align the gold triangle on the CPU with the socket marker, lower the chip without force, then close and lock the lever; the common mistake is pressing down on the processor before the lever is fully latched.

What maintenance or replacement will the board need later?

The 64 MB BIOS chip stores firmware that can be updated via USB for new CPU support, and the button cell on the board keeps the clock and settings alive when the system is off.

What limit appears first during sustained heavy loads?

The 5.5 GHz maximum boost clock on the 8 core 16 thread Ryzen 7 9700X will throttle under prolonged all core workloads if the cooler cannot dissipate the heat fast enough.

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