ASUS Prime B850-Plus WiFi
- Chipset:
- B850
- Socket:
- AM5
- Form Factor:
- ATX
- Memory:
- 4x DDR5
- Network:
- WiFi 6E + 2.5GbE
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Manufacturer: ASUS Last updated: September 11, 2026
ASUS Prime B850-Plus WiFi (AM5/AMD B850/ATX/Four DIMM DDR5/Wi-Fi 6E/2.5GbE) Review
The Prime B850-Plus WiFi is ASUS's value-focused ATX board for the AM5 platform, giving budget-minded Ryzen 9000/8000/7000 builders a full-size board with PCIe 5.0 GPU support and Wi-Fi 6E, without the premium pricing of the TUF or ROG lines.
Power delivery runs through ASUS's DIGI+ VRM with Dr. MOS power stages as part of the 5X Protection III design suite; ASUS does not publish an exact phase count for this board, but reviewers consistently rate it sufficient for any Ryzen 9000 non-X3D chip at stock clocks. Four DDR5 DIMM slots support up to 256GB total capacity, with AMD EXPO and AEMP profiles enabling overclocked speeds up to 8000+ MT/s on Ryzen 9000/8000/7000 processors. Expansion includes a PCIe 5.0 x16 primary slot, a PCIe 4.0 x16 slot running at x8/x4, and two PCIe 3.0 x16 slots wired at x1 for legacy cards. Storage covers three M.2 slots (PCIe 5.0 x4, PCIe 4.0 x4, and PCIe 4.0 x2) plus four SATA 6Gb/s ports. A 2.5GbE Realtek LAN controller with ASUS LANGuard protection handles wired networking, and Wi-Fi 6E 2x2 covers the 2.4/5/6GHz bands. Audio uses a Realtek 7.1 surround codec. Against the Gigabyte B850M AORUS STEALTH ICE in this catalog, the Prime B850-Plus WiFi trades the micro-ATX form factor for full ATX and adds a third PCIe 3.0 slot, making it the better pick for builders who want more expansion room in a standard case.
Power Delivery and VRM Design
Power delivery runs through ASUS's DIGI+ VRM with Dr. MOS power stages as part of the 5X Protection III design suite; ASUS does not publish an exact phase count for this board, but reviewers consistently rate it sufficient for any Ryzen 9000 non-X3D chip at stock clocks.
Memory Support
Four DDR5 DIMM slots support up to 256GB total capacity, with AMD EXPO and AEMP profiles enabling overclocked speeds up to 8000+ MT/s on Ryzen 9000/8000/7000 processors.
Expansion and Storage
Expansion includes a PCIe 5.0 x16 primary slot, a PCIe 4.0 x16 slot running at x8/x4, and two PCIe 3.0 x16 slots wired at x1 for legacy cards. Storage covers three M.2 slots (PCIe 5.0 x4, PCIe 4.0 x4, and PCIe 4.0 x2) plus four SATA 6Gb/s ports.
Connectivity
A 2.5GbE Realtek LAN controller with ASUS LANGuard protection handles wired networking, and Wi-Fi 6E 2x2 covers the 2.4/5/6GHz bands. Audio uses a Realtek 7.1 surround codec.
Comparison to Sibling Products
Against the Gigabyte B850M AORUS STEALTH ICE in this catalog, the Prime B850-Plus WiFi trades the micro-ATX form factor for full ATX and adds a third PCIe 3.0 slot, making it the better pick for builders who want more expansion room in a standard case.
Specifications
Platform and CPU compatibility
| Platform | AMD |
|---|---|
| Socket | AM5 |
| Socket | AMD Ryzen 9000 / 8000 / 7000 series |
| Chipset | B850 |
Platform
| Socket Type | AM5 |
|---|---|
| Form Factor | ATX |
Memory
| Memory Type | DDR5 |
|---|---|
| Memory Slots | 4 |
| Max Memory | 256 GB |
| Memory Type | 4x DDR5 DIMM, up to 256GB, up to 8000+ MT/s (OC) |
Expansion & Connectivity
| M.2 Slots | 3 |
|---|---|
| PCIe 5.0 Support | Yes |
| Wi-Fi Onboard | Yes |
Network and audio
| Audio Codec | Realtek 7.1 surround codec |
|---|
| Model | Prime B850-Plus WiFi |
|---|---|
| VRM | ASUS DIGI+ VRM with Dr. MOS (5X Protection III) |
| Expansion | PCIe 5.0 x16 + PCIe 4.0 x16 (x8/x4) + 2x PCIe 3.0 x16 (x1) |
| Connectivity | USB 10Gbps, BIOS FlashBack |
| Networking | 2.5GbE LAN, Wi-Fi 6E, Bluetooth |
| Special Features | 3x M.2, AI Cooling, Aura Sync |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Budget AM5 builders who still want PCIe 5.0 GPU support and Wi-Fi 6E
- Builds that need extra legacy PCIe slots for capture cards or sound cards
Not for
- Heavy overclockers who need a stronger VRM than this board's mainstream design
- Builds that need more than three M.2 slots
FAQs
What are the key specifications of the ASUS Prime B850-Plus WiFi (AM5/AMD B850/ATX/Four DIMM DDR5/Wi-Fi 6E/2.5GbE)?
The ASUS Prime B850-Plus WiFi (AM5/AMD B850/ATX/Four DIMM DDR5/Wi-Fi 6E/2.5GbE) is a motherboard from ASUS. Key specs: Socket AM5, Chipset B850, VRM ASUS DIGI+ VRM with Dr. MOS (5X Protection III), Memory 4x DDR5 DIMM, up to 256GB, up to 8000+ MT/s (OC), Expansion PCIe 5.0 x16 + PCIe 4.0 x16 (x8/x4) + 2x PCIe 3.0 x16 (x1).
Will the ASUS Prime B850-Plus WiFi (AM5/AMD B850/ATX/Four DIMM DDR5/Wi-Fi 6E/2.5GbE) work with my current setup?
The ASUS Prime B850-Plus WiFi (AM5/AMD B850/ATX/Four DIMM DDR5/Wi-Fi 6E/2.5GbE) lists Socket is AM5. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the ASUS Prime B850-Plus WiFi (AM5/AMD B850/ATX/Four DIMM DDR5/Wi-Fi 6E/2.5GbE) best suited to?
It suits budget am5 builders who still want pcie 5.0 gpu support and wi-fi 6e, builds that need extra legacy pcie slots for capture cards or sound cards.
What are the drawbacks of the ASUS Prime B850-Plus WiFi (AM5/AMD B850/ATX/Four DIMM DDR5/Wi-Fi 6E/2.5GbE)?
It is a poor fit for heavy overclockers who need a stronger vrm than this board's mainstream design, builds that need more than three m.2 slots.
Compare and read more
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