MSI

MSI MAG B550 Tomahawk Gaming Motherboard

Name: MSI MAG B550 Tomahawk Gaming Motherboard (AMD Ryzen 5000 Series, AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 2, HDMI/DP, 2.5Gbps LAN, ATX)
Brand: MSI
SKU: B089CWDHFZ

Bottom line: The MSI MAG B550 Tomahawk Gaming Motherboard: Dual LAN: 2.5 Gbps plus Gigabit, rare at this ATX price; main trade-off: AM4 and DDR4 only, so no upgrade path to AM5 or DDR5.

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-20

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Dual LAN: 2.5 Gbps plus Gigabit, rare at this ATX price
✓ PCIe 4.0 plus Gen 4 M.2 with M.2 Shield Frozr heatsink
✓ Dual channel DDR4 to 128 GB at 4866 MHz
✓ 2 oz copper PCB and 7W/mk choke pads for VRM heat

Cons

✗ AM4 and DDR4 only, so no upgrade path to AM5 or DDR5
✗ Older Ryzen CPUs may need a BIOS update before first boot
✗ Realtek ALC1200 codec trails ALC1220 boards for audio purists
✗ HDMI/DP outputs only work with a Ryzen APU, not a Ryzen 5000 X chip

Manufacturer description

Built for AMD Ryzen 5000 and 3rd Gen Ryzen processors, it pairs PCIe 4.0 graphics and a Lightning Gen 4 M.2 slot under an M.2 Shield Frozr heatsink with dual channel DDR4 support up to 128 GB at 4866 MHz. Networking is the standout: on-board dual LAN gives you a 2.5 Gbps port plus a Gigabit port, so you can run a fast primary link and keep a second network segment live. MSI's thermal work backs the power delivery with an extended aluminum heatsink cover, a 7W/mk choke thermal pad, and a PCB using 2 ounce thickened copper. Rear I/O covers USB 3.2 Gen 2 (including the Gen 2x2 Type-C standard)…

SpecPicks Verdict

SpecPicks scored MSI MAG B550 Tomahawk Gaming Motherboard using a rating × review-volume × price-fit model applied to published specs and reviews across the retro motherboards category. MSI's retro motherboards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for retro motherboards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Does the B550 Tomahawk support Ryzen 5000 CPUs out of the box?

It supports AMD Ryzen 5000 Series and 3rd Gen Ryzen processors, with MSI noting that future Ryzen processors require a BIOS update. Confirm the shipping BIOS revision on the listing before pairing it with a newer chip.

How much RAM can this motherboard handle?

It supports dual channel DDR4 up to 128 GB, with rated speeds up to 4866 MHz across its four DIMM slots.

Does it have 2.5 Gbps networking?

Yes. It uses on-board dual LAN: one 2.5G port plus a separate Gigabit port, so you can run two wired connections at once.

Is there PCIe 4.0 and a fast M.2 slot?

Yes. The board runs PCIe 4.0 for graphics and includes a Lightning Gen 4 M.2 slot covered by an M.2 Shield Frozr heatsink to keep drive temperatures down under load.

Can I use the HDMI and DisplayPort outputs?

Only with a Ryzen processor that has integrated graphics, such as an AM4 APU. Ryzen 5000 X-series chips have no iGPU, so those builds need a discrete graphics card.

Key Features

Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update.Audio ports (Rear): 5plus Optical S/PDIF (Realtek ALC1200 / ALC1220P Codec)
Supports dual channel DDR4 memory up to 128 GB (4866 MHz)
On-board dual LAN: 2.5G LAN plus Gigabit LAN
Mystic Light: RGB LED lighting and extendable pin headers – 16.8 million colors / 29 effects
Audio Boost rewards your ears with studio grade sound quality for immersive gaming experiences
Premium Thermal Solution: Aluminum Cover with additional choke thermal pad rated for 7W/mk and PCB with 2 ounce thickened copper

Full Specifications

Brand	msi
Turbo	Yes
Weight	2.5g
USB 2.0	6
Platform	Windows 11
CPU Model	AMD A4
CPU Socket	Socket AM4
Model Name	MAG B550 TOMAHAWK
Unit Count	1.0 Count
Chipset Type	AMD B550
Connectivity	USB
Model Number	MAG B550 TOMAHAWK
Mystic Light	RGB LED lighting and extendable pin headers – 16.8 million colors / 29 effects
Mfr Part Number	MAG B550 TOMAHAWK
Number of Ports	13
Total Usb Ports	9
Processor Socket	Socket AM4
Total PCIe Ports	4
Total SATA Ports	6
On-board dual LAN	2.5G LAN plus Gigabit LAN
Full listing title	MSI MAG B550 Tomahawk Gaming Motherboard (AMD Ryzen 5000 Series, AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 2, HDMI/DP, 2.5Gbps LAN, ATX)

Ready to buy?

MSI MAG B550 Tomahawk Gaming Motherboard (AMD Ryzen 5000 Series, AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 2, HDMI/DP, 2.5Gbps LAN, ATX) is vintage hardware; the used and vintage market on eBay carries most of the live inventory. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. It also has an Amazon listing — check it for current price and availability. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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