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Micro-ATX motherboard with AM5 socket CPU installed, dark PCB and silver heatsinks

MSI

MSI PRO B850M-P WIFI + Ryzen 7 9700X AMD motherboard combo

SKU CH-S2KX-KCS4Q

B850 Micro-ATX board paired with an 8-core, 16-thread Ryzen 7 9700X reaching 5.5 GHz boost

  • CPU Socket TypeAM5
  • ChipsetAMD B850
  • Number of Memory Slots4x288pin (DDR5)
  • Maximum Memory Supported256GB
  • Channel SupportedDual Channel
  • PCI Express 5.0 x161 x PCI Express 5.0 x16

+CPU +Ryzen 7 9700X

  • Ryzen 7 9700X delivers 8 cores and 16 threads for high multi-thread throughput
  • AM5 socket supports Ryzen 7000, 8000 and 9000 series processors for upgrade flexibility
  • B850 chipset provides PCIe 5.0 x16 slot and DDR5 8200 MT/s overclocking headroom
  • Wi-Fi 7 and Bluetooth 5.4 plus Realtek 8126 5G LAN give fast wireless and wired connectivity
  • Four SATA 6Gb/s ports and multiple USB 5Gbps, 10Gbps Type-A and Type-C connections cover storage and peripherals

Combo foundation

The MSI PRO B850M-P WIFI motherboard is paired with the AMD Ryzen 7 9700X processor in a single Micro ATX package. The board uses the B850 chipset on the AM5 socket and supports Ryzen 7000, 8000 and 9000 series CPUs. It provides dual channel DDR5 memory across four slots up to 256 GB and 8200 MT/s when overclocked.

Builder fit

This combination suits builders who want a compact platform with integrated Wi-Fi 7, Bluetooth 5.4 and 5G LAN for modern connectivity. The single PCI Express 5.0 x16 slot and three PCIe 3.0 x1 slots limit expansion cards, so users needing multiple full speed add in cards should look at full size ATX alternatives.

Deciding spec

The CPU delivers 8 cores and 16 threads based on Zen 5 architecture with a 5.5 GHz max boost clock and 40 MB cache. It supports DDR5 5600 memory natively and is unlocked for overclocking, making the processor the key factor in whether this combo meets performance targets.

特長

  • Ryzen 7 9700X delivers 8 cores and 16 threads for high multi-thread throughput
  • AM5 socket supports Ryzen 7000, 8000 and 9000 series processors for upgrade flexibility
  • B850 chipset provides PCIe 5.0 x16 slot and DDR5 8200 MT/s overclocking headroom
  • Wi-Fi 7 and Bluetooth 5.4 plus Realtek 8126 5G LAN give fast wireless and wired connectivity
  • Four SATA 6Gb/s ports and multiple USB 5Gbps, 10Gbps Type-A and Type-C connections cover storage and peripherals

仕様

BrandMSI
ModelPRO B850M-P WIFI+R7 9700X
Part NumberPRO B850M-P WIFI+R7 9700X
CPU Socket TypeAM5
ChipsetAMD B850
Number of Memory Slots4x288pin (DDR5)
Maximum Memory Supported256GB
Channel SupportedDual Channel
PCI Express 5.0 x161 x PCI Express 5.0 x16
PCI Express x13 x PCIe 3.0 x1 slots
Serial ATA (SATA)4 x SATA 6Gb/s
LAN ChipsetRealtek 8126 5G LAN
Wireless LANWi-Fi 7 Solution
BluetoothBluetooth 5.4
HDMI1 x HDMI
RJ451 x RJ45
DisplayPort1 x DisplayPort
USB 3.12 x USB 5Gbps Type-A
1 xUSB 10Gbps Type-A
USB 1.1/2.04 x USB 2.0
USB Type-C1xUSB 10Gbps Type-C
Audio Ports3 Ports
Onboard USB1 x AMD Ryzen 7 9700X CPU
1 x Shin-Etsu X-23-7868-2D (1.8g)
4 x USB 2.0
4 x USB 5Gbps Type-A
1 x USB 10Gbps Type-C
Form FactorMicro ATX

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この商品に関する質問

How loud and hot does the Ryzen 7 9700X run during all-day workloads?

The 8-core, 16-thread CPU has a 65 W base TDP and a 5.5 GHz max boost clock, so a quality air cooler keeps temperatures and fan noise low under sustained loads.

What memory and graphics must I already own for this combo to post?

You need DDR5 modules — up to 256 GB across four slots — and a discrete graphics card, because the Ryzen 7 9700X has no integrated GPU to drive the HDMI 2.1 or DisplayPort 1.4 outputs.

Will my PCIe 3.0 x1 add-in cards and SATA 6 Gb/s drives work on the B850 board?

Yes, the board provides three PCIe 3.0 x1 slots and four SATA 6 Gb/s ports, so older expansion cards and drives connect directly without adapters.

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