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MSI B850 GAMING PLUS WIFI

AM5 · ATX · DDR5 · board-only configuration · MSI global specification

ATX motherboard for supported AM5 processors, with 4 DDR5 slots and 3 onboard M.2 storage positions. Realtek RTL8126VB 5 Gb Ethernet; Wi-Fi 7; Bluetooth 5.4.

Reviewed 7 Sept 2026Manufacturer specifications, not a hands-on test.

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WHAT IT BRINGS

The useful part.

Combines 5 Gb Ethernet and Wi-Fi 7 with three onboard M.2 positions.

Manufacturer source

BEFORE YOU CHOOSE

The checks that matter.

The third M.2 slot uses PCIe 4.0 x2, and the first falls back to PCIe 4.0 with Ryzen 8000 processors.

Manufacturer source

NOTHING HIDDEN IN THE SMALL PRINT

Every specification.
With its source.

Our publishing standard

CPU socket: AM5
Conditions & context
Manufacturer specification · Match the exact CPU and required BIOS as well as the physical socket.
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Chipset: AMD B850
Conditions & context
Manufacturer specification
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Form factor: ATX: 304.8 × 243.84 mm
Conditions & context
Manufacturer specification · Board dimensions, not retail packaging. Check case mounting positions, clearance and cable routing.
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Memory type, slots and limit: 4 DDR5 DIMM slots; up to 256 GB; dual-channel unbuffered memory; AMD EXPO
Conditions & context
Manufacturer specification · Manufacturer capacity ceiling for this exact board, not included memory or a performance measurement. CPU, BIOS, DIMM population and the validated-module list determine support. DDR5 slots require DDR5 modules; DDR4 and DDR5 are not interchangeable. CUDIMM support is bypass mode only; compatibility depends on CPU and BIOS, and some combinations may not boot. Check the exact memory support list.
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Storage interfaces: M2_1: CPU PCIe 5.0 x4; M2_2: CPU PCIe 4.0 x4; M2_3: chipset PCIe 4.0 x2; 4 SATA 6 Gb/s ports
Conditions & context
Manufacturer specification · M2_1 uses PCIe 4.0 with Ryzen 8000 processors. M2_3 is an x2 link, not x4. Verify drive and processor compatibility in the exact board documentation.
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Network interfaces: Realtek RTL8126VB 5 Gb Ethernet; Wi-Fi 7; Bluetooth 5.4
Conditions & context
Manufacturer specification · Wi-Fi 7 requires supported Windows 11, drivers and access point; MSI specifies Windows 11 24H2 for full Wi-Fi 7 operation. 6 GHz availability depends on country rules. Bluetooth version depends on module vendor and drivers; no measured throughput is claimed.
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CPU support / BIOS source: MSI lists Ryzen 9000 / 8000 / 7000 desktop processors. Check the exact CPU support list and required BIOS before purchase; a socket match alone does not establish out-of-box compatibility.
Conditions & context
Manufacturer specification
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Maximum listed memory: 256 GB
Conditions & context
Manufacturer specification · Manufacturer capacity ceiling for this exact board, not included memory or a performance measurement. CPU, BIOS, DIMM population and the validated-module list determine support. DDR5 slots require DDR5 modules; DDR4 and DDR5 are not interchangeable. CUDIMM support is bypass mode only; compatibility depends on CPU and BIOS, and some combinations may not boot. Check the exact memory support list.
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DIMM slots: 4
Conditions & context
Manufacturer specification · Physical DDR5 module positions, not included modules. Consult the board manual for population order and compatible capacities.
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Onboard M.2 storage slots: 3
Conditions & context
Manufacturer specification · Onboard M.2 storage positions only. M2_1 uses PCIe 4.0 with Ryzen 8000 processors. M2_3 is an x2 link, not x4. Verify drive and processor compatibility in the exact board documentation.
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SATA storage ports: 4
Conditions & context
Manufacturer specification · SATA 6 Gb/s connectors, not supplied drives or power cables. M2_1 uses PCIe 4.0 with Ryzen 8000 processors. M2_3 is an x2 link, not x4. Verify drive and processor compatibility in the exact board documentation.
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Onboard audio hardware: Realtek ALC897
Conditions & context
Manufacturer specification · Manufacturer-listed onboard audio hardware, not a measured sound-quality result. Where alternatives are listed, no particular unseen controller revision is promised.
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