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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

  • CPU Socket TypeAM4
  • CPU TypeSupports AMD Ryzen 5000 / 5000 G / 4000 G / 3000 Series proc
  • ChipsetAMD B550
  • Number of Memory Slots4x288pin (DDR4)
  • Memory StandardDDR4 5100+ (OC)
  • Maximum Memory Supported128GB

Option MAG B550 TOMAHAWK MAX WIFI

Struck-through versions exist but are not stocked here.

  • 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.

Highlights

  • 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

Specifications

BrandMSI
SeriesPrime
ModelMAG B550 TOMAHAWK MAX WIFI
Part NumberB550TMHWKMWI
CPU Socket TypeAM4
CPU TypeSupports AMD Ryzen 5000 / 5000 G / 4000 G / 3000 Series processors
ChipsetAMD B550
Number of Memory Slots4x288pin (DDR4)
Memory StandardDDR4 5100+ (OC)
Maximum Memory Supported128GB
Channel SupportedDual Channel
Memory FeatureDDR4, 6 GHz, 4, 128 GB
PCI Express 4.0 x161 x PCI Express 4.0 x16
PCI Express 3.0 x161 x PCI Express 3.0 x16
PCI Express 2.0 x161 x PCI Express 2.0 x16
PCI Express x161 x PCI Express x16
PCI Express x43 x PCI Express x4
PCI Express x12 x PCI Express 3.0 x1
PCI Slots1 x PCI Slot
Serial ATA (SATA)6 x SATA 6Gb/s
M.21 x M.2 Gen4 x4 64Gbps slot, 1 x M.2 Gen3 x4 32Gbps slot
Onboard Video ChipsetSupported only by CPU with integrated graphic
Audio ChipsetRealtek ALC897
Audio Channels7.1 Channels
LAN ChipsetRealtek RTL8125B
Max LAN Speed2.5Gbps
Wireless LANAMD Wi-Fi 6E module
BluetoothBluetooth 5.2
Back I/O 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/21
COM3
Video Ports1
HDMI1 x HDMI
RJ451 x RJ45
USB 3.12 x USB 3.1
USB 3.010 x USB 3.0
USB 1.1/2.09 x USB 2.0
S/PDIF Out1 x Optical, 1 x Coaxial
S/PDIF In1 x Optical, 1 x Coaxial
Game/MIDI Ports1
Audio Ports6 Ports
Onboard USB1 x USB 3.1 + 2 x USB 3.0 + 6 x USB 2.0
Other ConnectorsOptical, ATX, 6, 4, 1, pci_e
Form FactorATX
Dimensions (W x L)20'
Softwarewindows_11
FeaturesAMD B550, Socket AM4, ATX, DDR4, 128 GB, 4, 6, 1, pci_e, Optical, AMD Ryzen 5000 Series, 5000-G Series, 4000-G Series and 3000 Series, 3 Years
Package Contents1 unit
Shipping weight1.76 kg
Package size343 × 269 × 71 mm

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

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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