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MSI MAG B650 TOMAHAWK 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 RTL8125BG 2.5 Gb Ethernet; Wi-Fi 6E; Bluetooth 5.3.

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

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WHAT IT BRINGS

The useful part.

Three onboard M.2 positions and six SATA ports provide several storage connection options.

Manufacturer source

BEFORE YOU CHOOSE

The checks that matter.

The second M.2 slot is unavailable with Ryzen 8500/8300 CPUs, and the third shares lanes with PCI_E2.

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 B650
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.
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Storage interfaces: M2_1 and M2_2: CPU PCIe 4.0 x4; M2_3: chipset PCIe 4.0 x4; 6 SATA 6 Gb/s ports
Conditions & context
Manufacturer specification · M2_2 is unavailable with Ryzen 8500/8300 processors. M2_3 and PCI_E2 each run at x2 when both are used. SATA_A1 and SATA_A2 do not support RAID.
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Network interfaces: Realtek RTL8125BG 2.5 Gb Ethernet; Wi-Fi 6E; Bluetooth 5.3
Conditions & context
Manufacturer specification · 6 GHz availability depends on country rules, operating system and drivers. Link capabilities are not measured throughput.
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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.
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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_2 is unavailable with Ryzen 8500/8300 processors. M2_3 and PCI_E2 each run at x2 when both are used. SATA_A1 and SATA_A2 do not support RAID.
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SATA storage ports: 6
Conditions & context
Manufacturer specification · SATA 6 Gb/s connectors, not supplied drives or power cables. M2_2 is unavailable with Ryzen 8500/8300 processors. M2_3 and PCI_E2 each run at x2 when both are used. SATA_A1 and SATA_A2 do not support RAID.
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Onboard audio hardware: Realtek ALC4080
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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