MSI MAG B550 TOMAHAWK Gaming Motherboard

£217.62 (as of 09/03/2026 04:39 PST - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

The MSI MAG B550 TOMAHAWK Gaming Motherboard is an ATX AMD AM4 board with DDR4 support, PCIe 4.0, M.2, SATA 6Gb/s and USB 3.2 Gen 2. It supports AMD Ryzen 5000 Series processors, with support for 3rd Gen AMD Ryzen and future AMD Ryzen processors via BIOS update. Check case size, CPU support and BIOS requirements before ordering.

SKU: B089CWDHFZ Category:

Quick Summary

The MSI MAG B550 TOMAHAWK Gaming Motherboard is an ATX motherboard for AMD AM4 systems. It supports DDR4 memory, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 2 and HDMI/DP, with support for AMD Ryzen 5000 Series processors.

It also includes support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with a BIOS update, plus dual channel DDR4 memory up to 128 GB at 4866 MHz.

Who It Is Best For

This motherboard suits buyers building or upgrading an AMD AM4 desktop who want the listed storage, graphics output and connectivity options in an ATX board. It is also relevant if you are planning a Ryzen 5000 Series build or checking BIOS support for older or future AMD Ryzen processors.

Key Details

DetailVerified information and buyer relevance
Product typeGaming motherboard for AMD AM4 systems.
Form factorATX, so it should be matched with a case that accepts ATX boards.
Memory supportDDR4 with dual channel support up to 128 GB at 4866 MHz.
Processor supportSupports AMD Ryzen 5000 Series processors, plus 3rd Gen AMD Ryzen and future AMD Ryzen processors with a BIOS update.
Expansion and storagePCIe 4.0, SATA 6Gb/s and M.2 are listed for system expansion and storage.
ConnectivityUSB 3.2 Gen 2, HDMI/DP, dual LAN and audio ports are included in the listed features.
AudioRear audio ports include 5 plus Optical S/PDIF, with Realtek ALC1200 / ALC1220P codec mentioned.
LightingMystic Light RGB LED lighting and extendable pin headers are listed, with 16.8 million colours and 29 effects.
Thermal featuresPremium Thermal Solution is listed with an aluminium cover, choke thermal pad rated for 7W/mk and 2 ounce thickened copper PCB.

Why Buyers Choose It

  • PCIe 4.0 and Lightning Gen 4 M.2 are listed for buyers who want current-generation expansion and storage support.
  • Dual LAN with 2.5G LAN plus Gigabit LAN gives two wired networking options on the board.
  • RGB lighting with extendable pin headers offers onboard lighting control and system matching.
  • Audio Boost and the listed audio codec support are aimed at immersive gaming audio.

What To Know Before You Buy

Check that your case supports ATX motherboards before ordering. If you are using a specific Ryzen processor, confirm the listed processor support and whether a BIOS update is needed for your chosen CPU. Review the memory limit, storage connections and rear connectivity against your build plan.

Pros: The board combines AM4 support, DDR4 memory, PCIe 4.0 and multiple connectivity features in one ATX layout.

Cons: Ryzen support for some processors depends on a BIOS update.

Common Buyer Questions

Does it support Ryzen 5000 Series processors?
Yes. Ryzen 5000 Series support is listed.

How much memory can it take?
It supports dual channel DDR4 memory up to 128 GB.

What storage and expansion options are listed?
PCIe 4.0, SATA 6Gb/s and M.2 are all listed.

Does it include RGB lighting features?
Yes. Mystic Light RGB LED lighting and extendable pin headers are listed, with 16.8 million colours and 29 effects.

Final Buying View

This motherboard is a strong match for an AMD AM4 desktop build where Ryzen support, DDR4 memory, PCIe 4.0 and the listed connectivity features matter. Confirm CPU compatibility, BIOS requirements and ATX case support before choosing it.

Brand

MSI

Manufacturer

MSI Computer

Binding

Personal Computers

Product Group

Personal Computer

Language

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EAN

4054842230879, 0824142217627

UPC

824142217627

Part Number

MAG B550 TOMAHAWK

Model

7C91-001R

Warranty

3 Year Manufacturer

Color

Black

Product Dimensions

12.00 x 1.50 x 9.60 inches

Item Weight

2.87 pounds

Release Date

June 16, 2020

Size

ATX

Number Of Items

1

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