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ATX motherboard with black PCB and silver heatsinks

MSI

MSI PRO B850-P WIFI AMD Motherboard

SKU CH-SX1T-7XTJ5 MPN PRO B850-P WIFI

ATX board for Ryzen 7000, 8000 and 9000 CPUs with DDR5 up to 8200 MT/s, PCIe 5.0 x16, M.2 Gen5, Wi-Fi 7 and 5G LAN

  • ProcessorRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
  • ChipsetAMD B850
  • Form factorATX
  • CPU socketAM5
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryUp to 8200+ MT/s (OC)

Model PRO B850-P WIFI

  • Supports Ryzen 7000, 8000 and 9000 series CPUs on AM5 socket
  • DDR5 memory boost to 8200+ MT/s OC with 256GB capacity
  • PCIe 5.0 x16 slot delivers 128GB/s bandwidth for graphics
  • Wi-Fi 7 with 320MHz channel reaches 5.8Gbps wireless speed
  • 5G LAN and Bluetooth 5.4 provide fast wired and wireless connectivity

Socket AM5 Platform

The board fits AMD Ryzen 7000, 8000 and 9000 series processors into an AM5 socket. Four DDR5 slots accept up to 256GB of memory running at 8200 MT/s when overclocked. It targets builders who need current-generation AMD performance on a standard ATX form factor.

PCIe 5.0 And M.2 Limits

One full-length slot delivers PCIe 5.0 x16 bandwidth while a second runs at PCIe 4.0 x16. Three M.2 sockets provide one Gen 5 x4 link, one Gen 4 x4 link and one Gen 4 x2 link. Four SATA 6Gb/s ports remain available for additional drives.

256GB Memory Headroom

Dual-channel DDR5 scales to 256GB, giving ample capacity for heavy multitasking and content creation. The 8200 MT/s ceiling is reached only with overclocked modules; standard JEDEC speeds will be lower. Network I/O tops out at 5Gbps wired and Wi-Fi 7 5.8Gbps wireless.

How it compares

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

Price $197.99
Typical for this category: the median of 1,906 items is $224.49.

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Specifications

Product
Brand nameMSI
Model namePRO B850-P WIFI
Processor
ProcessorRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
CPU socketAM5
ChipsetAMD B850
Memory
Memory slot count4 × 288pin (DDR5)
Supported memoryUp to 8200+ MT/s (OC)
Max supported RAM256 GB
Memory channelsDual Channel
Storage
SATA ports4 x SATA 6Gb/s
M.2 slots1 x M.2 (Support PCIe 4.0 x2) / 1 x M.2 (Support PCIe 4.0 x4) / 1 x M.2 (Support PCIe 5.0 x4)
Audio & video
Audio chipRealtek ALC897
Sound channels7.1 Channels
Connectivity
Ethernet controllerRealtek 8126-VB
Maximum network speed5 Gbit/s
Wi-Fi standardWi-Fi 802.11 be
Bluetooth support5.4
Ports & slots
PCIe 5.0 x16 slots1 x PCI Express 5.0 x16
PCIe 4.0 x16 slots1 x PCI Express 4.0 x16
PCIe x1 slots2 x PCI Express 3.0 x1
Rear panel ports1 x Clear CMOS Button / 1 x Flash BIOS Button / 1 x HDMI / 1 x LAN (RJ45) / 1 x Optical S/PDIF Out / 1 x USB 3.2 Gen 1 Type-A / 1 x USB 3.2 Gen 2 Type-A / 2 x Antenna Bracket / 2 x USB 3.2 Gen 2 Type-C / 4 x USB 2.0/1.1
Size & build
Form factorATX
Shipping weight2.27 kg
Package size343 × 279 × 76 mm

Other versions of this model

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Questions about this item

Should I pick a Ryzen 7000, 8000 or 9000 series CPU for this AM5 board?

All three series fit the AM5 socket; choose 7000 for value, 8000 for integrated graphics, or 9000 for the highest core counts and clocks.

What does the 8200+ MT/s memory rating mean once the system is built?

It is the maximum overclocked DDR5 speed the board can reach with capable modules; daily stability will depend on the CPU memory controller and cooling.

How fast is the Wi-Fi 7 connection in practice?

The 320 MHz channel allows up to 5.8 Gbps theoretical throughput, roughly 2.4 times the peak of Wi‑Fi 6/6E, though real‑world speed varies with router and environment.

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