Overview

  • Processor compatibility
    Supports AMD Ryzen 9000/7000 Series Desktop Processor Socket AM5
  • Speed (memory speed supported)
    4 DIMMs, Dual Channel DDR5 – 8200+ MT/s (OC)
  • Lightning Gen 5
    The latest PCIe 5.0 solution with up to 128GB/s bandwidth for maximum transfer speed.
  • Wi-Fi 7
    The latest wireless solution with a new 320MHz channel, achieving a maximum transmission speed of 5.8Gbps, which is 2.4 times faster than Wi-Fi 6/6E.
  • Audio
    8-Channel (7.1) HD Audio with Audio Boost

Compare similar

Specifications

Capacity & configuration

Memory Type Supported
DDR5
Memory Slot Type
288-pin DIMM

Dimensions & weight

Product Name
PRO B850-P WIFI (Socket AM5) AMD B850 ATX DDR5 Wi-Fi 7 Motherboard
Product Length
304.12 millimeters
Product Width
243.88 millimeters
Product Weight
52 ounces

Features

Brand
MSI
Color
Black
Chipset
AMD B850
Chipset Compatibility
AMD
Form Factor
ATX
Processor Socket
Socket AM5 (LGA 1718)
Processor Compatibility
AMD Ryzen 9 9000 Series
Number of M.2 Slots
3
Number Of PCI-E x16 Slots
1
SATA Connector
4x SATA 6G
Wireless Connectivity
Bluetooth
Wireless Networking Standard
Wi-Fi 7
Wireless Standard
BE
USB Ports
8 x USB-A 2.0
Number of Audio Channels
7.1
Number Of Memory Slots
4
Maximum Memory Supported
256 gigabytes
Memory Format Supported
UDIMM
Memory Speeds Supported
4x DDR5, Maximum Memory Capacity 256GB
RAID Support
RAID 0
Year of Release
2025
UPC
824142392607

Power & warranty

Model Number
PRO B850-P WIFI

Warranty & protection

Included manufacturer warranty

See manufacturer documentation.

Register your product with the manufacturer within 30 days of delivery.

Warranty service

Manufacturer warranty claims are handled by the manufacturer. We are happy to help you find the right contact: (888) 419-6820.

Customer reviews

Write a review
ayashiOct 10, 2026 · Verified purchase ★★★☆☆

I love MSI but faulty 3.5 minijacks suck. - The rear 3.5mm where I plug my speakers was behaving oddly, turned out the entire right channel was not producing sound. Wasted hours on this, eventually stripped the jacket and spliced a good half inch of wiring and tried again. This time there was QUIET sound. Progress... AI online tells me to do the "swap" where I try the spliced cables in the opposite channel to see if it works, thus eliminating the spliced wiring as the problem. Turns out it was right. Then the AI told me to start Soldering crap and prepping the motherboard for surgery when I gave it the middle finger and just pulled it from the 3.5mm jack in the back, and fit it into the front panel one. It worked perfectly with no loss to sound fidelity or issues with quality. Stupid.

AdrianGSep 19, 2026 · Verified purchase ★★★★★

Great simple cheap motherboard - Great mother board does support my ryzen 7 9800x3d

KYLERSep 15, 2026 · Verified purchase ★★★★★

Msi b850 - Very clean and inexpensive and comes with everything pretty much

AnthonyPAug 30, 2026 · Verified purchase ★★★★★

Goo Replacement Board - My computer board stopped working. I purchased this a few months ago and my system has been working since. This was my first time ever swapping a board so I was surprised it actually worked haha.

Add your review

Your email address will not be published. Required fields are marked *

Questions & answers

Ask a question

Email [email protected] or call (888) 419-6820 during business hours.

Free U.S. shippingOn every order. Leaves our store in 1–2 business days, arrives in 3–5 business days.
Free returns for 30 daysNo restocking fee. We email you a prepaid return label.
We can install it tooOptional in-home delivery, installation and haul-away on large appliances.
Talk to our team(888) 419-6820 · Mon–Sat