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MSI ARSENAL GAMING B450 TOMAHAWK AM4 AMD B450 SATA 6Gb/s USB 3.1 HDMI ATX AMD Motherboard

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  • AMD B450
  • Supports AMD Ryzen 1st and 2nd Generation / Ryzen with Radeon Vega Graphics / Athlon with Radeon Vega Graphics Processors for Socket AM4
  • Supports DDR4 3466/ 3200/ 3066/ 3000/ 2933/ 2800/ 2667 (by A-XMP OC MODE), 2667/ 2400/ 2133/ 1866 MHz (by JEDEC)

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

MSI B450 TOMAHAWK

Based on AMD B450 chipset, this board supports up to 2nd generation AMD Ryzen processors of up to eight cores. It's built with thermals and speed in mind, allowing you to take full advantage of your high-end components and the latest technology, like high-frequency RAMs, NVMe SSDs and USB 3.1 Gen2 devices. It's also built using premium materials, ensuring unbeatable quality and reliability even in the most torturous environments. Moreover, with onboard LED lighting and the RGB LED header, you have the ability to create and customize mesmerizing lighting effects, which make you rig look as good as it performs.

  • Supports AMD Ryzen 1st and 2nd Generation/ Ryzen with Radeon Vega Graphics/ Athlon with Radeon Vega Graphics Processors for Socket AM4
  • Supports DDR4 Memory, up to 3466(OC) MHz
  • Extended Heatsink Design: MSI extended PWM and enhanced circuit design ensures even high-end processors to run in full speed.
  • Lightning Fast Game experience: 1x TURBO M.2, AMD Turbo USB 3.1 GEN2, Store MI technology
  • Core Boost: With premium layout and fully digital power design to support more cores and provide better performance.
  • DDR4 Boost: Advanced technology to deliver pure data signals for the best gaming performance and stability.
  • MULTI-GPU: With STEEL ARMOR PCI-E slots. Supports 2-Way AMD Crossfire
  • Audio Boost: Reward your ears with studio grade sound quality for the most immersive audio experience.
  • Mystic Light and Mystic Light Sync: 16.8 million colors / 10 effects in one click. Synchronize RGB strips and other RGB solutions for customization.
  • BIOS FLASHBACK+: Simply use a USB key to flash any BIOS within seconds, without installing a CPU, memory or graphics card.
  • In-Game Weapons: Game Boost, GAMING Hotkey, X-Boost
  • EZ Debug LED: Easiest way to troubleshoot
  • Click BIOS 5: Award-winning BIOS with high resolution scalable font, favorites and search function
  • GAMING CERTIFIED: 24-hour on- and offline game and motherboard testing by eSports players
READY TO DOMINATE THE GAME
1 BIOS FLASHBACK+
2 PS/2 Combo Port
3 DVID Port
4 USB 3.1 Gen2 (Type A+C)
5 HD Audio Connectors S/PDIF
6 Heavy plated gaming heatsinks
Military styles designed for maximum cooling
7 DDR4 Boost
Optimized traces and isolated memory circuitry
8 PCI-E Steel Armor
Protecting VGA cards against bending and EMI
9 Turbo M.2
Delivering speeds up to 32Gb/s using Gen3 x4
10 Audio Boost
Optimized gaming audio using best components
11 Extended Heatsinks Design
Leading heatsink design, extended for maximum cooling and performance
12 Arsenal Sticker Area
Free for customization with personal style
B450 GAMING PRO CARBON AC
B450 GAMING PRO CARBON AC
THERMAL SOLUTION FOR MORE CORES AND HIGHER PERFORMANCE
With more cores' processors, thermal and power design is more important to make sure the temperature keeps lower. MSI extended PWM and enhanced circuit design ensures even high-end CPU to run in full speed with MSI motherboards.
EASY BIOS RECOVERY WITH BIOS FLASHBACK+
Run into trouble when updating your BIOS? Simply flash the old BIOS version back and continue gaming within minutes with BIOS Flashback+. BIOS Flashback+ even works without a CPU, memory or graphics card installed!
B450 GAMING PRO CARBON AC
EXTREME STORAGE PERFORMANCE: TURBO M.2
Enjoy a blazing fast system boot up and insanely quick loading of applications and data. Delivering speeds up to 32Gb/s per device using Gen3 x4, Turbo M.2 is over 5 times faster than a regular SATA III connection!
B450 GAMING PRO CARBON AC
Maximize your USB Device performance
Transfer your favorite games, music and movies over USB faster than ever. MSI offers a wide variety of options to connect and boost your USB 3.1 devices, delivering lightning-fast transfer speeds!
B450 GAMING PRO CARBON AC
B450 GAMING PRO CARBON AC
Core Boost

Core Boost technology combines MSI's premium layout and optimized power design which allows for faster and undistorted current delivery to the CPU at pin-point precision. Not only supporting multi-core CPU, also creating the perfect conditions for your CPU.

Customize your Gaming Rig
Personalize your PC with 16.8 million colors and 10 effects through Mystic Light RGB LED. Controlled in one click with the Mystic Light APP or a mobile device.
B450 GAMING PRO CARBON AC
Amplify your Game with Audio Boost 4
Like a dedicated sound card Audio Boost 4, powered by Nahimic, offers a HD audio processor, dedicated amplifier and high quality audio capacitors, all physically isolated from the rest of the motherboard circuitry to ensure the purest audio signal to locate enemies with pin-point accuracy.
B450 GAMING PRO CARBON AC
Unmatched Memory Performance
MSI motherboards are crammed with features to fuel your gaming rig's memory with more speed, higher overclockability and increased stability.
B450 GAMING PRO CARBON AC
Best compatibility
Optimized traces and a fully isolated memory circuitry ensures perfect stability and performance, so you never have to worry about your system crashing during games.
B450 GAMING PRO CARBON AC
B450 GAMING PRO CARBON AC
Your in-game advantage
Outsmart and outperform your opponents in-game using an array of unique MSI GAMING tools. Clever hardware & software tools, created to keep you one step ahead of the competition and boost your skills.
B450 GAMING PRO CARBON AC
Immerse yourself into Virtual Worlds
Integrating the very best of cutting edge technologies on MSI hardware provides a smooth Mixed Reality, Augmented Reality and Virtual Reality ride. Through joint efforts with major VR brands, combined with unique MSI features to optimize VR, MSI brings gamers and professionals a vivid and realistic experience in which content truly comes alive.
B450 GAMING PRO CARBON AC

Learn more about the MSI B450 TOMAHAWK

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by Newegg.com's Standard Return Policy.
Ownership: 1 day to 1 week
Verified Owner
4/ 5
Missing skrews

Pros: The board itself is fine

Cons: Its missing screws to install the M.2 SSD card so now I have to submit a ticket just to get a packet of screws shipped.

Overall Review: Good product but missing parts

Did you find this review helpful?
Manufacturer Response:
Dear Branden,

Thank you for sharing your thoughts on the B450 TOMAHAWK! If you ever require technical assistance or warranty support, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Good motherboard to buy

Overall Review: Love the RGB on this motherboard. Also beautiful design. Had no problem with it. My ryzen 5 2600x performs well on it.

Did you find this review helpful?
Manufacturer Response:
Dear Truong,

Thank you for sharing your experience with the B450 TOMAHAWK! If you ever require technical assistance or warranty support, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team
5/ 5
Great MOBO

Pros: Bios flashback
Subtle RGB
Ryzen 3000 compatible

Cons: Limited bios because of the update.

Overall Review: No issues with this MOBO. Bios flashback works great to get MOBO ready for Ryzen 3000 series. The BIOS is pretty extensive too. I've had no issues with RAM running at it's intended speed (I've used Corsair Vengeance and OLOy WarHawk). I would recommend this MOBO without hesitation. The only con that I can think of is the visuals of the BIOS. In order to support the new Ryzen chips, they had to do away with the nice looking graphics and make the BIOS look more simple. Don't let this deter you though. If you want a MOBO that works as advertised and won't break the bank, look no further.

Did you find this review helpful?
Manufacturer Response:
Dear Nick,

Thank you for reviewing the B450 TOMAHAWK! If you ever require technical assistance or warranty support, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team
5/ 5
Easy to setup and overall great MB

Pros: Bios Flashback+ being a very nice little feature to help update BIOS
RGB available on the motherboard and done pretty nicely
Supports all bits and pieces in my current build
Nice Heatsinks
Overall nice design

Cons: None as of now

Overall Review: I would recommend this to many, works perfectly on my setup and is just overall a very nice motherboard

Did you find this review helpful?
Manufacturer Response:
Dear Valued Customer,

Thank you for sharing your experience with the B450 TOMAHAWK! If you ever require technical assistance or warranty support, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team
4/ 5
Working with Ryzen 3600

Pros: Flash BIOS button worked to make this board compatible, followed the instructions exactly
RAM OC working

Cons: None yet

Overall Review: Just got the machine up and running but wanted to toss out a review letting people know the BIOS Flash does work and this board can run Ryzen 3000 Series

1 out of 1 people found this review helpful. Did you?
Manufacturer Response:
Dear Nicholas,

Thank you for leaving a review for the B450 Tomahawk! We are happy to hear the board is working well for you with the new Ryzen 3000 series processors. If you ever require technical assistance or warranty support, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team
Ownership: 1 month to 1 year
Verified Owner
5/ 5
BEST B450 EVER

Pros: Excellent Overclocker.
8 Phase VRM
RGB
GOOD Memory Overclocker

Cons: none

Overall Review: Highly Recommended. This is coming after using this board for a year now. Looking forward to use it with my New Ryzen 7 3700X soon.

Did you find this review helpful?
Manufacturer Response:
Dear Hassan,

Thank you for taking the time to review the B450 TOMAHAWK! If you ever require technical assistance or warranty support, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team
1/ 5
Do Not Buy for Ryzen 30000 Series CPUs! Incompatible or Unstable and BIOS Options Stripped Bare

Pros: Fits well into a garbage can.

Cons: Incompatible or unstable with Ryzen 3000 CPUs
Majority of useful BIOS options (e.g. OC manual controls) removed
Deceptive business practices

Overall Review: Despite MSI's claims, and total silence to the contrary, this board is NOT compatible with the Ryzen 3000 series chips (yet?). With a new working Ryzen 3600, my first board bricked after performing flashback on the bios and would not power (anything) up. With the replacement, I waited through two bios updates but the board remains extremely unstable. It only posts 1/4 of the time that I power it up, the rest of the time giving an LED code for the CPU. When it does post, my PC works fine and I have rigorously tested the CPU to determine that it is not the issue.

MSI is rushing out their B450 Tomahawk Max to cover for the fact that this board will not work with the processors, as they clearly state in their advertising, and refuse to publically announce that there is a massive issue with the current boards in the meantime. In addition, they without a doubt will be selling the Max at a significantly higher price, when it should be a direct replacement--especially for those of use that bought their lies and bought this product in the first place--to capitalize on their deceptive practices.

In addition, in order to allow the board to be used with a larger number of CPUs, the BIOS options have been gutted. This board is advertised as being full of options for overclocking, hardware configuration, and more, but more than half of that functionality is now gone. MSI fails to mention this in any of their product marketing.

Because MSI knows that the B450 board series is not compatible with the Ryzen 3000 series CPUs, they should offer to exchange any B450 series board that customers cannot use with their 3000 series chips with the replacement B450 Max board, at no additional charge. A replacement with another B450 is unacceptable. They must offer the B450 Max, as it is a product designed specifically to replace the B450, almost entirely due to the compatibility issue that they refuse to admit to--despite that fact that they are marketing it as an "upgrade" to capitalize monetarily on their deceptive business practices even more.

1 out of 2 people found this review helpful. Did you?
Manufacturer Response:
Dear Andrew,

Thank you for sharing your experience with the B450 Tomahawk. We are sorry to hear you are experiencing a problem with Ryzen 3rd gen processor compatibility. There are plenty of people at the moment not experiencing an issue with this, so it certainly can work. Please make sure you are following all proper steps to flash the BIOS. Our BIOS team is working hard to provide a stable BIOS for everyone as soon as possible. If you have any further questions regarding this product or have any suggestions for improvement for us, please do not hesitate to contact us directly at usrma@msi.com and we will be more than happy to assist you. If you would like further technical assistance, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team | JM08062019004 | usreview@msi.com
Ownership: 1 week to 1 month
Verified Owner
2/ 5
Ryzen 3000 - Disappointing Experience

Pros: Great VRMs, board layout, build quality.
Good theoretical value for the money.
Probably one of the most highly recommended boards for Ryzen 2000 series.

Cons: Significant problems with Ryzen 3000. Some background: I've been building systems for 2 decades, and tested known-working parts from an identical, working build -- read below.

Seems to be a silicon lottery. Built two new systems with identical hardware (Ryzen 3600, Tomahawk, Seasonic Focus Gold+ 850W PSU, 1TB NVME, 3600CL16 RAM on the QVL). One posted immediately and has been rock solid stable, with XMP Profile 1 enabled. The other would refuse to post reliably, regardless of bios version. At one point, problems appeared to be solved, but then 2 days later refused to post again, even after reseating CPU, resetting CMOS, reflashing BIOS via flashback, etc. Went through the whole gamut of testing different components in the non-working system sourced from the working system, to isolate the problem. The problem seems to arise with *specific* CPU/Board combinations, potentially due to small manufacturing variances, but who really knows? MSI certainly doesn't seem to understand the problem, even a month after launch. I've never seen anything quite like this in all my building experiences.

Based on this "lottery", I've returned both boards and will be buying X570 boards which, while they have their own issues, are able to post reliably.

Overall Review: If you're buying this board for Ryzen 2000, it is a pretty great value and a well-reviewed board. However, if you don't want to roll the dice and end up waiting weeks for new BIOSes or new parts, pay the extra money for x570 if you're planning to use a 3000 series processor.

3 out of 3 people found this review helpful. Did you?
Manufacturer Response:
Dear Valued Customer,

Thank you for sharing your experience with the B450 Tomahawk. We are sorry to hear you are experiencing a problem with Ryzen 3rd gen processor compatibility. Our BIOS team is working hard to provide a stable BIOS for everyone as soon as possible. If you have any further questions regarding this product or have any suggestions for improvement for us, please do not hesitate to contact us directly at usrma@msi.com and we will be more than happy to assist you. If you would like further technical assistance, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team | JM08062019003| usreview@msi.com
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