MSI PRO B850-S WIFI6E AM5 ATX Motherboard
- Processor Socket: Socket AM5
- Chipset Type: AMD B850
- Chipset Family: AMD B850
- RAM Memory Technology: DDR5
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A dependable, understated AM5 board for a workstation style build, with real buyer feedback backing its stability.
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ASIN: B0FR6948FRModel: PRO B850-S WIFI6ECategory: Motherboards
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Overview
MSI's PRO B850-S WIFI6E is an AM5 ATX motherboard built around the B850 chipset, running Ryzen 9000, 8000 and 7000 series processors with DDR5 memory and PCIe 4.0.
- AM5 socket for Ryzen 9000 / 8000 / 7000 series
- DDR5 memory overclocking to 8200+ MT/s
- M.2 Gen5 x4 slot plus a second M.2 Gen4 x4 slot
- Wi-Fi 6E and 2.5Gbps LAN built in
Who it's for
AM5 builders assembling a workstation or general PC who want plain styling over gaming aesthetics, plus Ryzen 9000, 8000 or 7000 upgraders needing DDR5 and Gen5 storage support. Buyers wanting three or more M.2 slots, or an included printed manual, should check elsewhere.
Pros and cons
- Ships without a printed manual per one buyer
- Side I/O metal bracket fiddly to install per reviewer
Performance notes
The 12 Duet Rail P-PAK VRM is designed to hold stable power delivery under Ryzen 9000 series loads, backed by a 7W/mK thermal pad and VRM heatsink for cooling. Four DDR5 slots support overclocking to 8200+ MT/s, and the PCIe 4.0 x16 slot carries the graphics card. Storage splits across an M.2 Gen5 x4 slot under a Frozr heat shield and a second M.2 Gen4 x4 slot. Wi-Fi 6E, Bluetooth 5.3 and 2.5Gbps LAN cover networking, with a rear 10Gbps USB Type-C port.
Specifications
| Brand | MSI |
|---|---|
| Model | PRO B850-S WIFI6E |
| Dimensions & fit | |
| Item Weight | 3.2 pounds |
| Item Dimensions L x W x H | 10.7 × 13.6 × 2.9 inches |
| Capacity & performance | |
| Memory Storage Capacity | 256 GB |
| Memory Clock Speed | 8.2 GHz |
| Compatibility & installation | |
| Graphics Card Interface | PCI Express 4.0 |
| Compatible Devices | Personal Computer |
| Warranty & support | |
| Warranty Description | 3 years |
| Other details | |
| Processor Socket | Socket AM5 |
| Chipset Type | AMD B850 |
| Chipset Family | AMD B850 |
| RAM Memory Technology | DDR5 |
| Memory Slots Available | 2 |
| Total Usb Ports | 1 |
| Number of Ethernet Ports | 1 |
| Platform | Windows 11 |
| Number of Items | 1 |
| Number of Ports | 3 |
| Mfr Part Number | PROB850SWIFI6E |
Closest rivals on specs
ASUS ROG Strix B850-G Gaming WiFi AM5 Motherboard- Item Weight 3.2 vs 2.9 pounds (+10%)
ASUS TUF Gaming B850M-PLUS WiFi AM5 Motherboard- Item Weight 3.2 vs 2.6 pounds (+23%)
- Memory Storage Capacity 256 vs 192 GB (+33%)
GIGABYTE B550 Eagle WIFI6 AM4 ATX Motherboard- Item Weight 3.2 vs 2.76 pounds (+16%)
- Memory Storage Capacity 256 vs 128 GB (+100%)
Frequently asked questions
What processors does the MSI PRO B850-S WIFI6E support?
Ryzen 9000, 8000 and 7000 series processors on the AM5 socket.
How many M.2 slots does the PRO B850-S WIFI6E have?
Two, one M.2 Gen5 x4 slot and one M.2 Gen4 x4 slot; some buyers wanted a third slot.
Does the PRO B850-S WIFI6E include Wi-Fi?
Yes, a Wi-Fi 6E module with Bluetooth 5.3 is built in alongside 2.5Gbps LAN.