Overview
The MSI B850MPOWER is a performance-focused micro-ATX motherboard built for AMD Ryzen desktop processors and enthusiasts who want advanced DDR5 memory overclocking. Featuring the AMD B850 chipset and AM5 socket, it combines a two-slot memory design, PCIe 5.0 expansion, four M.2 storage connectors, Wi-Fi 7, and 5GbE wired networking in a compact motherboard layout.
Key Features
- AMD B850 chipset and AM5 socket for compatible Ryzen 9000, 8000, and 7000 Series processors.
- Two DDR5 DIMM slots supporting up to 128 GB of memory.
- High-speed DDR5 memory overclocking, with advertised speeds up to 10200+ MT/s depending on configuration.
- One PCIe 5.0 x16 slot and one PCIe 4.0 x4 expansion slot.
- Four M.2 connectors, including two PCIe 5.0 x4 and two PCIe 4.0 connectors with different lane configurations.
- Two SATA 6Gb/s connectors for additional storage.
- Wi-Fi 7 wireless networking and Bluetooth 5.4.
- Realtek 5GbE LAN for high-speed wired networking.
- USB Type-C connectivity, including a rear USB 20Gbps Type-C port.
- EZ DIY features, EZ M.2 Shield Frozr II, and Flash BIOS Button.
- 12+2+1 Duet Rail Power System and an 8-layer PCB design.
Specifications
| Specification | Details |
|---|
| Brand Name | MSI B850MPOWER |
| Manufacturer | MSI (Micro-Star International) |
| Model | B850MPOWER |
| MPN | B850MPOWER |
| Product Type | Desktop Motherboard |
| Chipset | AMD B850 |
| CPU Socket | AMD Socket AM5 |
| Supported Processors | AMD Ryzen 9000, 8000, and 7000 Series Desktop Processors |
| Form Factor | Micro-ATX (mATX) |
| Memory Type | DDR5 |
| Memory Slots | 2 × DIMM, dual-channel |
| Maximum Memory Capacity | 128 GB |
| Maximum Memory Speed | Up to 10200+ MT/s OC, depending on processor and memory configuration |
| Expansion Slots | 1 × PCIe 5.0 x16; 1 × PCIe 4.0 x4 |
| M.2 Storage | 4 × M.2: 2 × PCIe 5.0 x4, 1 × PCIe 4.0 x4, 1 × PCIe 4.0 x2 |
| SATA Storage | 2 × SATA 6Gb/s |
| Wireless Networking | Wi-Fi 7 |
| Bluetooth | Bluetooth 5.4 |
| Ethernet | Realtek 5GbE LAN |
| Audio | Realtek ALC4080 codec; 7.1-channel USB high-performance audio |
| Video Output | 1 × HDMI 2.1 FRL, up to 8K at 60Hz with a compatible processor featuring integrated graphics |
| USB Connectivity | Rear USB 20Gbps Type-C, USB 10Gbps Type-A/Type-C, USB 5Gbps Type-A, and USB 2.0; additional front-panel headers |
| BIOS Features | Flash BIOS Button |
| Operating System | Windows 11 64-bit support |
| Board Dimensions | 243.84 × 243.84 mm (9.60 × 9.60 inches) |
Compatibility and Installation
The MSI B850MPOWER requires a compatible AMD AM5 processor and DDR5 desktop memory. Confirm the CPU support list and BIOS requirements before installation. Use a PC case that supports micro-ATX motherboards, and verify graphics-card clearance, cooler compatibility, power connections, and M.2 heatsink clearances before assembling the system.
Maximum memory overclocking speeds depend on the processor, memory modules, BIOS, and system configuration. PCIe and M.2 operating modes can also vary with the installed processor.
DC Supplies Product Note
DC Supplies provides product information to help customers choose compatible computer components. Confirm stock availability, exact product revision, included accessories, and warranty terms with DC Supplies before ordering.
Frequently Asked Questions
Which processors work with the MSI B850MPOWER?
The motherboard supports AMD Ryzen 9000, 8000, and 7000 Series desktop processors using the AM5 socket, subject to the manufacturer's CPU support list and BIOS requirements.
How much RAM can it support?
It has two DDR5 DIMM slots and supports up to 128 GB of memory. Overclocked memory speeds depend on the installed processor and memory configuration.
How many M.2 SSDs can be installed?
There are four M.2 connectors: two PCIe 5.0 x4 connectors, one PCIe 4.0 x4 connector, and one PCIe 4.0 x2 connector. Consult the motherboard manual for processor-dependent limitations and heatsink restrictions.
Does the motherboard include Wi-Fi?
Yes. It features Wi-Fi 7 and Bluetooth 5.4, along with a 5GbE wired LAN connection. Wireless features require compatible software and regional support.
What size PC case is required?
The B850MPOWER uses the micro-ATX form factor and measures approximately 9.60 × 9.60 inches. Select a case that supports micro-ATX motherboards.
Where can I find official specifications and downloads?
Visit the official MSI B850MPOWER specifications page for detailed specifications, BIOS updates, drivers, manuals, and compatibility information.
