MSI MAG B550 TOMAHAWK Gaming Motherboard (AMD AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 2, HDMI/DP, ATX, AMD Ryzen 5000 Series processors)
Condition: New
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Availability:
In Stock.
Arrives
Wednesday, Sep 24
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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
- Lightning Fast Game Experience: PCIe 4.0, Lightning Gen 4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 GEN 2
Description
Powered by AMD Ryzen AM4 processors, the MSI MAG B550 TOMAHAWK is hardened with performance essential specifications to outlast enemies. Equipped with Extended Heatsink Design, Core boost, M.2 Shield Frozr and 2.5G LAN for sustained performance. A variety of USB connectivity options including the latest USB 3.2 Gen 2x2 Type C standard allow for a range of peripheral and device compatibility.
Brand: msi
CPU Socket: Socket AM4
Compatible Devices: Personal Computer
RAM Memory Technology: DDR4
Compatible Processors: AM4
Chipset Type: AMD B550
Memory Clock Speed: 5100 MHz
Platform: Windows 11
Model Name: MAG B550 TOMAHAWK
CPU Model: AMD A4
Processor: amd_a4
RAM: 128 GB DDR4
Memory Speed: 5100 MHz
Wireless Type: 2.4 GHz Radio Frequency, 5 GHz Radio Frequency
Number of USB 2.0 Ports: 6
Brand: msi
Series: MAG B550 TOMAHAWK
Item model number: MAG B550 TOMAHAWK
Item Weight: 2.99 pounds
Product Dimensions: 12 x 9.6 x 1.5 inches
Item Dimensions LxWxH: 12 x 9.6 x 1.5 inches
Computer Memory Type: DDR4 SDRAM
Batteries: 1 Lithium Ion batteries required.
Manufacturer: MSI
Language: English
Is Discontinued By Manufacturer: No
Date First Available: June 16, 2020
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Sep 24
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
I bought this as a replacement for an ASRock X570 Steel Legend that I've had since they first launched back in the summer of 2019. As, it was gradually showing more signs of failure over the time that I had it in my system. First, the onboard audio stopped working. Which, I just switched over to using the audio interface that I had for recording. So, that didn't bother me TOO much. I also was noticing that games were starting to have more and more issues with micro-stutter. I did some tinkering and got it behaving a little better. But, that never fully went away. The final thing that prompted me to look for a replacement was I started having really bad lag issues while playing online games. Yes, legitimate lag. Not the "I missed my shot, the stupid server must be lagging!" type of lag. As, I'm very well aware of and openly recognize how bad I am at competitive games. This is "friend and I are in a car together, friend awkwardly crashes car into a building, I wonder why they did that, then the game suddenly snaps to us being on a completely different street and still moving" level of lag. Quite a frequent occurrence, at that. I tried a list troubleshooting steps. Driver updates for everything, lowering the games' settings, reinstalling the games, cleaning the operating system, reinstalling the operating system, adjusting settings and also resetting the router back to factory defaults, port forwarding, pestering the cable company about connection issues, different ethernet cables, etc. I figured seeing as the motherboard was already having other issues, perhaps it was drying out even further. So, I decided to start looking for replacement options. Which, being that the 7000 series processors had been out for a while, I knew that my options would be slimmer than before. At least for a NEW board. Also, pricing may not be ideal. But, reading a bunch of reviews and doing comparisons, this particular board sounded like it would be a solid choice without having to spend a lot more for the available higher end boards. I had mixed feelings about "stepping down" a notch to the B550 chipset. But, upon further consideration and reading, the performance difference was minimal. Plus, I didn't use enough of the extra features that X570 had over B550 to really be concerned about that. So, I went ahead and grabbed it. Yeah, it was a great decision to grab this board! Though there are still occasional lag quirks (which, is to be expected, honestly), there was a HUGE improvement in connection stability with games. Plus, games and the system overall feel notably smoother than before. Far less micro-stutter and things just feel more responsive, as a whole. Oh, and I have onboard sound back. Which, is cool too! But, yeah, I am VERY happy with this board! Everything about it seems to work great! And, I can't think of any major complaints. Maybe that the UEFI menu feels a little messy to navigate. But, that could just be a familiarity thing. Also, I don't use any of the "software suite" stuff that often comes with motherboards. That's just unnecessary bloat, to me. So, I can't comment on any of that stuff. I was worried that I was getting a step down from my previous board. But, that was not at all the case. A very solid choice for anyone that plays demanding games, does content creation, and/or software/game development.
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Reviewed in the United States on December 3, 2024 by Amazon Customer
Always the way to go. I love MSI products. Always sturdy and well built. This motherboard isn't as flashy as the ASUS I replaced it with, but it's been smooth running ever since the swap.
Reviewed in the United States on August 17, 2025 by Italiandad18 Italiandad18
The Good: I purchased this board specifically to handle my Ryzen 9 5900X, as I needed a motherboard with a robust power delivery solution. The B550 Tomahawk has absolutely delivered. My main goal was to lower my MOSFET temperatures, and the results are fantastic. Temps went from a concerning 80°C on my old board to a very stable 50°C with this one. It handles the 5900X without breaking a sweat. Beyond that, the layout is great and it has a sufficient number of fan and RGB headers for a clean build. The Not-So-Good: The reason for docking a star has nothing to do with the board's performance, but with the condition it arrived in. I paid for a new product. However, the sealed box was missing the user manual, the MSI case badge, the driver DVD, and all the other small cards that should be included. For a collector who likes to keep everything, this is a major disappointment. It strongly suggests that I was sent a previously returned item that was simply repackaged. Conclusion: The motherboard itself is 5-star worthy for its performance. However, be cautious about the seller/fulfillment, as receiving an incomplete package sold as "new" is not acceptable. Updated on July 17th: I suddenly found that the box content listed on msi website has latest update. It turns out that only sata cable and quick installation guide are provided. All others are no longer provided.
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Reviewed in the United States on July 12, 2025 by alex
my last pc i built for myself was a fx6300 on an old msi military board now 20 years old. cleaned it up gave it to a family member. yes it is still being used daily and so when i went to build my new pc it was a no brainer for me to go with msi again. this thing is heavy like a brick. came new no dents dings or cowboy boots. so yeah read about these "warning lights" going nutty ect. that concerned me and there is no documents that explains how they are to work. should they come on then go off ect. so i used a known bad hard drive. yup the light lit up and stayed on even though the drive was acting fine. it knew there was an issue. i used that drive till it died and yup the light never went out. so i put in a new m.2 and 2.5 ssd as well as two 2 tb hard drives. now the lights come on first the hard drive then the graphics then memory. then one at a time as it boots up then they go out. before the lights go out it has to see the whatever and make sure its there and ok then out they go like clock work. now could you get a board with an issue or maybe using old parts with unknown issues? of course that is what these lights are for and how i :think: they are to work. was i afraid to buy this? yes i was! would i suggest this board? after the use of this for a month bet your booty. this was the best i could do price wise so if you are in a tight spot building price wise and this fits the budget. get it! i watch voltages ect but i do not overclock never needed to. this board has been running great no magor voltage issues or fires lol used with a 3700x and 32 gigs 3600 ven. have seen where others could not get this ram to run at these speeds. read on one article that had like a cpl sentences saying to only install one ram stick as you set up and the rest after you after finished. the first time i used all ram and it didnt run them at these speeds so whatever the one stick thing does if anything would suggest trying that on a fresh install. as for me the second install that way worked... just why i have no idea. i play e sports and triple a games. this has not had one issue or made me scratch my head asking that age old question (ram thing aside)... now what the hell are you doing! LOL only thing new to me on this board is rgb and argb thing and right off the bat i made the mistake >>>WARNING<<< i bought a three pack of thermaltake rgb fans. was all the best buy had nearby. of course it needs the usb plug but my wifi needs it as well as my front panal connections. that lead to the purchase of "Motherboard Internal USB 2.0 Hub 9 pin USB Header Male 1 to 4" wich you guessed it needs the usb pins. just read how the signals are split on this thing. i placed the wifi on the mb. i set the rgb hub on one side then the font panal on the other side so signals are not sharing or splitting one side in half.
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Reviewed in the United States on May 4, 2021 by edshamilton