MSI PRO B850M-P WIFI AMD B850 AM5 mATX Motherboard
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About This Item
- AMD B850 chipset for Socket AM5 processors (Ryzen 7000/8000/9000 Series)
- 4x DDR5 DIMM slots up to 256 GB, 8200 MHz+ (Dual-channel)
- 3x M.2 slots (2x PCIe 5.0, 1x PCIe 4.0) and 4x SATA connectors
- PCIe 5.0 x16 slot with Supplemental Power for high-end GPUs
- Wi-Fi 7 and 5G LAN with Bluetooth 5.4
- Micro ATX form factor with 7.1-channel audio (Realtek ALC897)
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MSI PRO B850M-P WIFI | AMD B850 mATX Workstation Board
The MSI PRO B850M-P WIFI motherboard AMD B850 Socket AM5 micro ATX is engineered for UK professionals and creators. It supports AMD Ryzen 7000, 8000, and 9000 series processors. This board offers Wi-Fi 7, 5G LAN, and three M.2 slots for fast storage. It suits productivity builds and modern AI tasks.
Core Specs at a Glance
| Metric | Spec. |
|---|---|
| Socket | AMD Socket AM5 |
| Memory | 4x DDR5 slots, up to 256 GB |
| Storage | 3x M.2, 4x SATA |
| Networking | 5G LAN, Wi-Fi 7, Bluetooth 5.4 |
| Form Factor | micro ATX (243.8 x 243.8 mm) |
| USB (Rear) | 3x USB 3.2 Gen 2, 2x USB 3.2 Gen 2 Type-C |
Future-Ready AM5 Platform
This board uses the AMD B850 chipset. It supports the latest Ryzen 9000 series processors. So, you can build a PC that stays relevant for years. The Socket AM5 platform ensures long-term upgrade paths. Also, it supports Windows 11 x64 for modern software.
High-Speed DDR5 Memory
It features four DDR5 DIMM slots. You can install up to 256 GB of memory. Supported speeds reach 8200 MHz (OC). Dual-channel architecture boosts bandwidth. This helps with multitasking and large datasets. However, ECC memory is not supported; check your needs if error correction is critical.
Triple M.2 with PCIe 5.0
The board includes three M.2 slots. Two slots support PCIe 5.0 for ultra-fast NVMe SSDs. The third slot runs at PCIe 4.0. All slots accommodate 2280-size drives. The EZ M.2 Shield Frozr II helps with thermal management. This keeps SSDs cool under heavy loads. Note: On-board graphics are not available; you need a dedicated GPU.
Robust Power and Thermal Design
A 7+2+1 phase digital VRM powers the CPU steadily. The 8-pin ATX connector handles heavy workloads. Extended heatsinks and 7W/mK thermal pads dissipate heat efficiently. Transient Voltage Suppressors (TVS) protect against power spikes. These features maintain performance during sustained tasks.
Next-Gen Connectivity
You get 5G LAN for wired speed. Wi-Fi 7 (802.11be) offers lower latency and higher efficiency. The EZ Antenna includes a magnetic stand for easy placement. Bluetooth 5.4 supports wireless peripherals. Rear ports include HDMI 2.1 for basic display output. USB options are plentiful: 4x USB 3.2 Gen 1, 3x USB 3.2 Gen 2 Type-A, and 2x Type-C.
Optimised for Productivity
MSI AI LAN Manager prioritises latency-sensitive apps. This is useful for video editing or online meetings. The board supports RAID 0, 1, and 10 for storage redundancy. Seven storage drives can be connected in total. The Realtek ALC897 audio chip delivers 7.1-channel output. However, audio quality depends on your speakers or headphones.
Box contents
- MSI PRO B850M-P WIFI motherboard
- SATA cables
- Wi-Fi antenna
- M.2 mounting screws
- Quick start guide
- Driver disc (or download link)
Check before you buy
- Confirm your case fits a micro ATX board (243.8 x 243.8 mm).
- Verify you have a dedicated graphics card, as there is no on-board GPU.
- Check Wi-Fi band requirements; this board supports Wi-Fi 7 but requires compatible routers.
- Ensure your PSU has a 24-pin ATX and 8-pin CPU power connector.
Frequently Asked Questions
Q: Does this motherboard support AMD Ryzen 7000 series processors?
A: Yes, it supports AMD Ryzen 7000, 8000, and 9000 series CPUs on Socket AM5.
Q: How many M.2 slots are available?
A: There are three M.2 slots, with two supporting PCIe 5.0 and one PCIe 4.0.
Q: Is Wi-Fi 7 compatible with older routers?
A: Yes, it supports older Wi-Fi standards, but Wi-Fi 7 speeds need compatible routers.
Q: What is the maximum memory capacity?
A: The board supports up to 256 GB of DDR5 memory across four DIMM slots.
Q: Does it have on-board graphics?
A: No, you must use a dedicated graphics card for display output.
The Consultant’s verdict & warranty
This board is ideal for UK professionals building a compact, future-proof PC. It suits creators, coders, and office users who need fast storage and reliable networking. The Wi-Fi 7 and 5G LAN are strong for data-heavy tasks. However, gamers need a separate GPU. Covered by the standard Manufacturer Warranty.

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