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MSI MAG B550 TOMAHAWK AM4 AMD B550 SATA 6Gb/s ATX AMD Motherboard

Ships from United States.

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  • AMD B550
  • Supports AM4 socket 3rd Gen AMD Ryzen processors, and future AMD Ryzen processors with BIOS update
  • Supports DDR4 3200/ 3066/ 3000/ 2933/ 2800/ 2667/ 2400/ 2133/ 1866 MHz by JEDEC
  • Supports DDR4 4866+/ 4800/ 4733/ 4600/ 4533/ 4400+/ 4266/ 4133/ 4000/ 3866/ 3733/ 3600/ 3466/ 3200/ 3066/ 3000/ 2933/ 2800/ 2667 MHz by A-XMP OC MODE
  • 1DPC 1R max speed 4866 MHz
  • 1DPC 2R max speed 3866 MHz
  • 2DPC 1R max speed 4000 MHz
  • 2DPC 2R max speed 3600 MHz

  • Overview
  • Specs
  • Warranty & Returns
  • Reviews
MAG B550 TOMAHAWK
EXCLUSIVE FEATURES
MAG B550 motherboard
icon-core_boost
Core Boost Technology

An optimized power circuit layout is ready to unleash maximum performance.

msi-icon-6
6 layer PCB

6 layer PCB improves signal transmission for high performance capabilities across the motherboard.

icon-2oz_thickened
2oz Thickened Copper PCB

An enhanced PCB material design with 2oz thickened copper increases conductivity, improving heat dissipation and high-performance reliability.

icon-digital
Digital PWM

A selection of the highest quality power delivery components lets the system run reliably even under extreme conditions.

icon-steel_armor
PCIe Steel Armor

Reinforced and shielded PCIe slots for strength and stability.

MAG B550 TOMAHAWK
PREMIUM THERMAL SOLUTION
MAG B550 TOMAHAWK motherboard
msi-icon-aluminum
Extended Heatsink

Larger heatsink design for cooling and performance.

icon-m2_shield_frozr
M.2 Shield Frozr

Sustain maximum high-speed M.2 SSD data transfer with M.2 SHIELD FROZR and prevent SSD thermal throttling.

msi-icon-pump_fan
Pump Fan Support

Control watercooling pump speeds for flowrate and noise control.

msi-icon-k7
Heatsinks with 7W/mK Thermal Pad

7W/mK thermal pad provides better heat transfer to the heatsink.

MAG B550 TOMAHAWK
HIGH-SPEED TRANSMISSION
MAG B550 motherboard
icon-gaming_2_5g_plus_lan
2.5G plus Gigabit LAN

Onboard 2.5G & Gigabit Ethernet LAN with gaming LAN manager.

icon-amd_turbo_usb
Turbo USB

Featuring TURBO USB 3.2 GEN2 10Gbps with reversible Type-C connector.

icon-ddr4_boost
DDR4 Boost

The memory circuit design has been optimized on a reserved section of the motherboard fully isolated from other circuits.

icon-lightning
Lightning Gen 4 Solution

Transfer data lightning fast across Gen 4 PCI-E and M.2 with up to 64GB/s bandwidth.

the aluminum cover of the motherboard
THERMAL SOLUTION FOR HIGH PERFORMANCE MULTI CORE PROCESSORS

An extended PWM heatsink and efficient circuit design keep temperatures in check and let the CPU power delivery system sustain extreme performance.

the ports of the motherboard
TWIN TURBO M.2 AND M.2 SHIELD FROZR

Sustain maximum M.2 SSD data transfer with M.2 SHIELD FROZR. Prevent SSD thermal throttling with a heatsink that extends across the motherboard.

the ports of the motherboard
10 + 2 + 1 DUET RAIL POWER SYSTEM

Unleash and sustain maximum performance with an aggressive VRM design built to supply stable and steady power delivery.

  • 10 phase Duet Rail CPU Power System / Smart Power Stage 60A
  • 2 phase SOC Power
  • 1 phase APU Power
  • Digital PWM IC
the 2oz thickened copper of the motherboard
PCB WITH 2OZ THICKENED COPPER

An enhanced PCB material design with 2oz thickened copper increases conductivity, improving heat dissipation and high-performance reliability.

the chart of the motherboard between SATA, M.2 M.2 Gen3x4 and MSI
LIGHTNING GEN 4 SOLUTION

Strike fast with MSI Lightning Gen 4 PCI-E. Attach ultra fast PCI-E 4.0 devices and enjoy up to 64GB/s unidirectional transfer bandwidth.

the motherboard in a computer case
CUSTOMIZE YOUR GAMING RIG

Personalize your PC with RGB LED lighting capable of 16.8 million colors with dynamic effects through the Mystic Light APP.

  • Customize colors
  • Customize effects
LAN ports of the motherboard
DUAL LAN WITH 2.5G LAN

MAG B550 TOMAHAWK features high-bandwidth and low-latency 2.5G and Gigabit LAN for demanding creators and power users. Onboard 2.5Gbps connectivity provides incredible data transfer speed faster than ever before. MSI LAN Manager automatically classifies and prioritizes the latency-sensitive for your applications, giving you the best online experience with low latency.

core boost of the motherboard
CORE BOOST

Core Boost combines a reserved zone of optimized circuits and premium power delivery components to create a highly efficient power system capable of precise current output to the CPU.

inside of the motherboard
UNMATCHED MEMORY PERFORMANCE

MSI takes memory stability and performance to the extreme. The memory circuit layout has been optimized for reliability and tested extensively in partnership with major memory manufacturers for compatibility.

STEEL ARMOR of the motherboard
MULTIPLE GPU SUPPORTS AND STEEL ARMOR

MAG B550 TOMAHAWK supports AMD CrossFire multi GPU technology. PCI-E slot placements provide optimal airflow for graphics card cooling. MSI PCI Express Steel Armor slots are secured to the motherboard with extra solder points and support the weight of heavy graphics cards. When every advantage counts, Steel Armor shields the point of contact from electromagnetic interference.

AUDIO BOOST of the motherboard
AMPLIFY YOUR GAME WITH AUDIO BOOST

Like a dedicated sound card, Audio Boost offers an 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.


Learn more about the MSI MAG B550 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.
Anonymous
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Great product and fits right into my black and red build. 9/26/2020 9:47:42 AM

Overall Review: Overall this MOBO is amazing especially if you get it on sale.

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Great for the price! Beautiful board. 9/25/2020 9:57:45 PM

Pros: - Great feature set for the price
- Beautiful design
- Reliable, worked out of the box as expected of course
- No issues

Overall Review: Ended up upgrading to an X570 for additional features for running multiple graphics cards in VMs in Linux, but this was a great board. Reliable, didn't have any issues, great feature set for the price. Can't complain.

Did you find this review helpful?
Anonymous
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Has everything you need 9/24/2020 11:52:41 AM

Pros: Has a lot of RGB and ARGB connections along with 6 fan points and 6 SATA slots, but what I like best are the options for 2 - M.2 slots that are available.
The color choises for the graphice on the card are great as well.

Cons: about the only thing that might be a deterrent is that its heavy, this is not the sort of motherboard you put in the portable case.

Overall Review: I give it about a 8.75

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
From a old to new 9/19/2020 11:01:39 PM

Pros: Great install, loved the booklet, confused but still built it!

Cons: Besides the fact I need smaller fingers to maneuver between the cpu cooler and ram slots it’s perfect!

Overall Review: I absolutely fell in love with this MBD. It was a simple instal I purchased noctua cpu cooler and the bracket mounting was super easy. Everything is spaced just right and no issues with adding additional ram or a Sabrent 1tb nvme pcie 4x with heatsink overall impressed.

Did you find this review helpful?
Anonymous
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Excellent board! 9/17/2020 12:10:51 PM

Pros: Appears well made, came with current BIOS, getting the memory timed to 3200 was easy, rock solid performance. I'm not an overclocking nerd and just want things to run on/in specification and this board does that.

Cons: Made my budget groan from a little stress but worth it.
The fancypants light settings from the MSI app seem to be suggestions to the motherboard that if it deigns to acknowledge them then you might see the color change based on CPU temp. Maybe. If you aren't looking directly at it and say please in Mandarin.

Overall Review: 10 thumbs up, will buy again when my jealous social circle decides that they're done being console peasants.

1 out of 1 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
3/ 5
Won't clock my RAM any higher than 2133MHz 9/17/2020 4:41:40 AM

Pros: - Looks great.
- Feels rugged and high quality.
- Mystic Lighting looks phenomenal.

Cons: - No A-XMP or manual OC settings working:

I'm using 2x Corsair Vengeance 2x8GB kits (CMW16GX4M2C3200C16W) with a Ryzen 3600x. They advertise speeds at 3200MHz through XMP @ 1.35v. I cannot even raise DRAM frequency above 2133MHz or else the board fails to post and needs a CMOS reset. Default XMP profiles do not work, the board fails to post and requires a CMOS reset. Ryzen Master tuning doesn't even work. Updated to the latest BIOS and same results... MSI lists the above kit in their QVL, and MemTest86 and MemTestPro show no errors after a 24 hour burn-in test. Highly frustrated with this build.

- Sometimes fails to output video with MSI 1070ti Duke's Display Port:

I've noticed that sometimes when booting, it posts and loads Windows, but I never know this because my video fails to output unless I unplug the Display Port cable from my second monitor. On my old rig, this was not an issue, and I swapped the card back to my old rig to make sure my card wasn't damaged or something. Works like a treat on my old rig. This was a big enough issue that upon first building my new rig I thought I wasn't posting, so I wasted a lot of my time troubleshooting (reseating RAM, reseating processor and GPU, swapping PSUs, swapping GPUs) and all I had to do was unplug Display Port.

- M-Flash will not display unless HDMI is the only video source:

Yeah, another Display Port issue. Maybe someone else will see this review and this will save them the trouble of searching Google. If you use Display Port, M-Flash will not display. You have to have HDMI plugged in only. Again, another issue that cost me my time.

Overall Review: While the board is nice and it does work, I can't say I'd buy this again after the amount of frustration I have encountered. It's not a nice feeling building a new PC and it fails to post the first time. I have a support ticket in with MSI, so hopefully it's just a bad board maybe, but as of right now this is easily the worst mobo I've ever owned.

Did you find this review helpful?
Ownership: 1 month to 1 year
Verified Owner
1/ 5
the product came damaged and doesnt work 9/15/2020 9:02:41 PM

Pros: nothing

Cons: i have got the motherboard and i install it very well but the pc didnt run

Overall Review: i have got the motherboard and i install it very well but the pc didnt run

0 out of 1 people found this review helpful. Did you?
Anonymous
Ownership: 1 week to 1 month
Verified Owner
3/ 5
Works Great 9/15/2020 9:50:20 AM

Pros: Working just fine

Cons: Either the motherboard or my ram were messed up because the ram i used was not recognized so i had to buy other ram and that ended up working. also The BOOT debug light will come on when i power on the computer, but it still works so im not sure what the problem with that is.

Overall Review: Great product, just a few issues from the start and a continuous minor issue

Did you find this review helpful?
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