Technical Snapshot

The MSI MAG B550 TOMAHAWK is a ATX motherboard built on the B550 chipset for AMD AM4 processors. It supports DDR4 memory up to 128 GB across 4 DIMM slots. Expansion includes PCIe 4.0 with 2 M.2 slots. Connectivity features None and 2.5GbE + 1GbE Ethernet.

Use Case
Gaming builds, mainstream performance computing
Compatibility
AMD AM4 processors, DDR4 memory
Category
ATX Motherboard — B550
MSI MAG

MAG B550 TOMAHAWK

B550 · AMD AM4 · ATX · DDR4 up to 128 GB

Determines which CPU processors are physically compatible. AMD AM4 supports AMD Ryzen 1000–5000 series and select Athlon processors.
Socket AMD AM4
Controls data flow between the CPU, RAM, storage, and expansion slots. Higher-end chipsets unlock overclocking, more PCIe lanes, and USB4.
Chipset B550
Maximum total system memory capacity when all DIMM slots are populated with the highest-density modules.
Max RAM 128 GB
Peripheral Component Interconnect Express version. PCIe 5.0 delivers 128 GB/s total bandwidth, double that of PCIe 4.0.
PCIe Generation PCIe 4.0
MPNMAG B550 TOMAHAWK
EAN4719072733698
CategoryMotherboards
Contact for Price
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Connectivity & I/O

Ethernet 2.5GbE + 1GbE
M.2 Storage 2
PCIe Bus PCIe 4.0
I/O backplate visual — refer to official MSI product page for high-resolution rear panel imagery

Motherboard Anatomy

MSI MAG B550 TOMAHAWK board layout
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Full Specifications

Data sourced from official MSI product specifications
Platform
Chipset B550
Socket AMD AM4
Form Factor ATX
Memory Type DDR4
DIMM Slots 4
Max RAM 128 GB
PCIe Generation PCIe 4.0
M.2 Slots 2
Bluetooth
LAN 2.5GbE + 1GbE
USB (Rear I/O)
Audio
Series MAG

Support & Downloads

B550 BIOS Update (Latest) Version 2024 · UEFI Firmware · Check MSI support for latest version
MSI Support →
BIOS Recovery Tool MSI BIOS recovery utility · USB-based
MSI Support →
B550 Chipset Driver Package AMD/Intel chipset drivers · Windows 10/11
MSI Support →
LAN / Wi-Fi / Bluetooth Drivers Latest network drivers for this motherboard
MSI Support →
Audio Drivers Audio codec driver package
MSI Support →
MSI MAG B550 TOMAHAWK User Manual PDF · Complete installation and configuration guide
MSI Support →
Quick Start Guide PDF · Hardware installation quick reference
MSI Support →
← Back to MSI Motherboard Catalog

Frequently Asked Questions

What socket does the MAG B550 TOMAHAWK use?

The MAG B550 TOMAHAWK uses the AMD AM4 socket, compatible with AMD Ryzen 1000–5000 series and select Athlon processors.

How much RAM does the MAG B550 TOMAHAWK support?

The MAG B550 TOMAHAWK supports up to 128 GB of DDR4 memory across 4 DIMM slots.

Does the MAG B550 TOMAHAWK have Wi-Fi?

No, the MAG B550 TOMAHAWK does not include built-in Wi-Fi. An external Wi-Fi adapter or PCIe Wi-Fi card can be added.

How many M.2 slots does the MAG B550 TOMAHAWK have?

The MAG B550 TOMAHAWK features 2 M.2 slots for high-speed NVMe SSD storage with PCIe 4.0 support.

What chipset does the MAG B550 TOMAHAWK use?

The MAG B550 TOMAHAWK is built on the AMD B550 performance chipset with modern connectivity, offering ATX form factor design for AMD platforms.

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