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Rectangular ATX motherboard in dark grey with black heatsinks and silver I/O shield

MSI

MSI MAG B550 TOMAHAWK MAX WIFI AMD motherboard

SKU CH-7MVK-J2746 MPN MAG B550 TOMAHAWK MAX WIFI

ATX AM4 board with 10+2+1 power, PCIe 4.0, dual M.2 shields, Wi-Fi 6E and 2.5G LAN for Ryzen 5000 CPUs

  • ProcessorSupports AMD Ryzen 5000 / 5000 G / 4000 G / 3000 Series proc
  • ChipsetAMD B550
  • Form factorATX
  • CPU socketAM4
  • Memory slot count4 × 288pin (DDR4)
  • Supported memoryDDR4 5100+ (OC)

Model MAG B550 TOMAHAWK MAX WIFI

  • Ryzen 5000 series processors supported for high performance
  • 128 GB DDR4 memory capacity with 5100 MHz overclocking headroom
  • PCIe 4.0 x16 slot and dual M.2 deliver 64 GB/s bandwidth
  • Wi-Fi 6E and 2.5 G LAN provide fast wired and wireless networking
  • Extended heatsinks, 7W/mK pads and M.2 Shield Frozr keep components cool

AM4 Socket DDR4 Platform for Ryzen 5000

The MSI MAG B550 TOMAHAWK MAX WIFI is an ATX motherboard built around the AMD B550 chipset for AM4 socket processors. It supports Ryzen 5000, 5000 G, 4000 G and 3000 series CPUs with a 10+2+1 duet rail power system and dual channel DDR4 memory up to 5100 OC across four 288 pin slots. Maximum capacity reaches 128 GB.

Builders Needing PCIe 4.0 M.2 and 2.5G LAN

This board suits builders who want a single PCIe 4.0 x16 slot, two M.2 connectors with thermal shielding, six SATA 6Gb/s ports and integrated Wi-Fi 6E plus 2.5G Ethernet. Users requiring more than one full speed PCIe 4.0 x16 slot or a newer AM5 platform should consider other chipsets.

One PCIe 4.0 x16 Slot Decides GPU Bandwidth

The chipset provides a single PCIe 4.0 x16 connection for the primary graphics card. If your build demands two graphics cards at 4.0 x16 or x8/x8 electrical lanes, this motherboard cannot deliver that configuration.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $121.99
Cheaper than about 69% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Product linePrime
Model nameMAG B550 TOMAHAWK MAX WIFI
Part numberB550TMHWKMWI
Processor
ProcessorSupports AMD Ryzen 5000 / 5000 G / 4000 G / 3000 Series processors
CPU socketAM4
ChipsetAMD B550
Memory
Memory slot count4 × 288pin (DDR4)
Supported memoryDDR4 5100+ (OC)
Max supported RAM128 GB
Memory channelsDual Channel
Storage
SATA ports6 x SATA 6Gb/s
M.2 slots1 x M.2 Gen4 x4 64 Gbit/s slot, 1 x M.2 Gen3 x4 32 Gbit/s slot
Graphics
Onboard video chipSupported only by CPU with integrated graphic
Audio & video
Audio chipRealtek ALC897
Sound channels7.1 Channels
Connectivity
Ethernet controllerRealtek RTL8125B
Maximum network speed2.5 Gbit/s
Wi-Fi standardAMD Wi-Fi 6E module
Bluetooth support5.2
Ports & slots
PCIe 4.0 x16 slots1 x PCI Express 4.0 x16
PCIe 3.0 x16 slots1 x PCI Express 3.0 x16
PCIe x16 slots1 x PCI Express x16
PCIe x4 slots3 x PCI Express x4
PCIe x1 slots2 x PCI Express 3.0 x1
PCI slots1 x PCI Slot
Rear panel ports1 x Flash BIOS Button
1 x DisplayPort
1 x HDMI
1 x LAN (RJ45)
2 x Antenna Bracket
1 x Optical S/PDIF Out
5 x Audio Jacks
1 x PS/2 Keyboard/Mouse Combo
2 x USB 2.0/1.1
2 x USB 3.2 Gen 1 Type-A
1 x USB 3.2 Gen 2 Type-A
1 x USB 3.2 Gen 2 Type-C
PS/2 ports1
Serial ports3
Video connectors1
HDMI ports1 x HDMI
Ethernet port1 x RJ45
USB 3.1 ports2 x USB 3.1
USB 3.0 ports10 x USB 3.0
USB 2.0 ports9 x USB 2.0
S/PDIF output1 x Optical, 1 x Coaxial
Game/midi ports1
Audio jacks6 Ports
Onboard USB headers1 x USB 3.1 + 2 x USB 3.0 + 6 x USB 2.0
Size & build
Form factorATX
Width and length20'
Shipping weight1.76 kg
Package size343 × 269 × 71 mm
In the box
In the box1 unit
More details
PCI express 2.0 x161 x PCI Express 2.0 x16
S/PDIF in1 x Optical, 1 x Coaxial

Other versions of this model

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Questions about this item

What comes in the box with the MAG B550 TOMAHAWK MAX WIFI and what do I need to buy separately?

The board ships with the ATX motherboard, I/O shield, SATA cables and driver disc. You must supply an AM4 processor, DDR4 memory modules, storage drives, a graphics card if your CPU lacks integrated graphics, a compatible ATX case, power supply and CPU cooler.

Which memory capacity should I choose for this board?

Four DDR4 slots support up to 128 GB total. Populate two slots first for dual-channel operation; add the other two later only if your workload needs more than 64 GB.

What does the 2400 Mbps Wi-Fi 6E figure mean in daily use?

That is the peak PHY rate on the 6 GHz band under ideal conditions. Real-world throughput will be lower and depends on router capability, distance, interference and client device support.

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