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)
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Availability:
In Stock.
Arrives
Friday, Jul 24
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Size: (Pack of 1)
Style: MSI MAG B550 TOMAHAWK Gaming Motherboard
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 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
CPU Model: AMD A4
Memory Storage Capacity: 128 GB
Ram Memory Maximum Size: 128 GB
Main Power Connector Type: 24-Pin
Graphics Card Interface: PCI Express
Memory Slots Available: 4
Number of Ports: 13
S/PDIF Connector Type: Optical
System Bus Standard Supported: SATA 3
Total SATA Ports: 6
USB 2.0: 6
Total Usb Ports: 9
Number of Ethernet Ports: 2
Total Number of HDMI Ports: 1
Total PCIe Ports: 4
Brand: msi
Model Name: MAG B550 TOMAHAWK
Model Number: MAG B550 TOMAHAWK
Manufacturer: MSI
UPC: 824142217627
Global Trade Identification Number: 25
Mfr Part Number: MAG B550 TOMAHAWK
Unit Count: 1.0 Count
Item Weight: 3 Pounds
Warranty Description: 3 Years
Item Dimensions L x W x H: 9.6"L x 1.5"W x 12"H
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Jul 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
Size: (Pack of 1)
Style: MSI MAG B550 TOMAHAWK Gaming Motherboard
Best motherboard I've ever had. Works very well, no issues and booted first try. At a time when PC hardware is expensive and hard to find, the AM4 set up is the best option for gaming and this motherboard will definitely buy some time until the next upgrade. Its VRMs will handle the best of the AM4 CPUs and have more than enough cooling to handle overclocking due to having over kill heatsinks. Great optical audio out for it being built in. Decent USB ports though it could use a couple more. Operating with a liquid cooled Ryzen 7 5800x, MSI RTX 3070, 32GB DDR4 3200 RAM, Samsung NVMe 980 M.2 SSD. CPU overclocked hitting 4.82Ghz, GPU overclocked, RAM overclocked to 3600. In a case with proper fan placement it never runs hot and runs most everything at high to ultra settings at 120+ FPS. I intentionally have my FPS capped at 120 (118) for cooling purposes and to not stress my gpu so that it lives longer but it hit 244 FPS when uncapped (on a 244Hz monitor).
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Reviewed in the United States on March 14, 2026 by Amazon Customer
Size: (Pack of 1)
Style: MSI MAG B550 TOMAHAWK Gaming Motherboard
Best mobo for the AM4 generation. Easy to install and worked right out of box. I did not need to update the bios. It also is visually striking without all the anoying led. Although you can hook up ungodly amounts of led if you choose. I highly recommend this board
Reviewed in the United States on June 15, 2026 by Grey
Size: (Pack of 1)
Style: MSI MAG B550 TOMAHAWK Gaming Motherboard
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
Size: (Pack of 1)
Style: MSI MAG B550 TOMAHAWK Gaming Motherboard
Amazing! Works great it’s still doing the job and running fine !
Reviewed in the United States on June 28, 2026 by Ruben L
Size: (Pack of 1)
Style: MSI MAG B550 TOMAHAWK Gaming Motherboard
Picked this board up as a replacement for a Gigabyte AB350 Gaming 3 which died on me and It's been a smooth transition which is refreshing since this is my first MSI board, I've only used Asus, Asrock & Gigabyte in the past. My 5600X worked immediately without requiring a BIOS update though I highly recommend downloading and flashing the latest BIOS update from MSI's website as soon as you complete your setup to ensure stability. It's a very simple process and for those who are new to bios flashing, just look up a video on youtube. Overall, this is a solid motherboard and I'm satisfied with my purchase. If you like the features it offers and don't mind spending a little extra, opt-in to getting the upgraded version with WiFi. Though your mileage may vary as we all have different specs, here are the pros and cons of this mobo based on my personal experience with it: Pros: Nice features for the price point (2.5G LAN, PCIe 4.0 support, .etc) Sleek design with heatsinks that will compliment the look of any system, Two M.2 slots with protective plating, that don't disable any SATA ports like my previous board, Plenty of SATA ports & fan headers, Easy-to-use BIOS compared to other brand setups Cons: Only 6 back-end USB ports (Not a big deal, but more would be nice without the need of a hub) The on-board LED is in a weird spot. While the light is visible in my third pic as a close-up, bigger GPUs may block it almost entirely. This can be switched off manually on the board itself though. Also, to customize the LED options you have to use the MSI Center program's Mystic Light feature. I would've preferred built-in RGB settings through the bios. Did not play nice with my Corsair Vengeance LPX 32GB RAM, caused BSODs multiple times with XMP both on and off, and despite working flawlessly on my old board. Currently works fine with an old 16GB 3200mhz kit though.
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Reviewed in the United States on September 27, 2024 by XiØN
Size: (Pack of 1)
Style: MSI MAG B550 TOMAHAWK Gaming Motherboard
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
Size: (Pack of 1)
Style: MSI MAG B550 TOMAHAWK Gaming Motherboard
I replaced a different MSI M.B. with this model because a component in it had failed and I lost the video display to the monitor. The new B550 Tomahawk is now running in my gaming computer and working great.
Reviewed in the United States on June 9, 2026 by Danny J Harding
Size: (Pack of 1)
Style: MSI MAG B550 TOMAHAWK Gaming Motherboard
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