MSI MAG B550 Tomahawk

Perhaps one of MSI’s most important models on any B series chipset is its MAG Tomahawk series. Highly popular with consumers due to offering solid features at a very competitive price point, the MSI MAG B550 Tomahawk has some interesting features with dual M.2 slots, dual Ethernet including a 2.5 G and Gigabit pairing, with a Realtek ALC1200 HD audio codec.

Starting with the design, the B550 Tomahawk has a contrasting black and grey design, including the heatsinks, rear panel cover, and a patterned PCB. There is one element of RGB LED lighting which can be found underneath the chipset heatsink. It features two full-length PCIe slots with the top slot operating at PCIe 4.0 x16, and a second PCIe 3.0 x4 slot which derives from the chipset. For storage, the B550 Tomahawk includes two PCIe M.2 slots, with the top slot benefiting from PCIe 4.0 x4 support, and the second slot locked at a maximum of PCIe 3.0 x4. Both M.2 slots include separate M.2 Frozr heatsinks, while for SATA drives, MSI includes six SATA ports. A total of four memory slots are present with the capability to install up to 128 GB, with speeds of up to DDR4-5100 officially supported.

Like the majority of MSI’s B550 models, the B550 Tomahawk includes a single USB 3.2 G2 Type-C, and a single USB 3.2 G2 Type-C port, with two USB 3.2 G1 Type-A and two USB 2.0 ports also present. For networking, there are two RJ45 Ethernet ports, with one controlled by a Realtek RTL8125B 2.5 GbE controller, while the other port is controlled by a Realtek’s Gigabit RTL8111H. A Realtek ALC1200 HD audio codec powers the five 3.5 mm audio jacks and S/PDIF optical output, while the rear panel also includes video outputs for Ryzen APU’s which consists of an HDMI and DisplayPort pairing. Finishing off the rear panel is a small BIOS Flashback button and a PS/2 Keyboard and Mouse combo port.

The MSI MAG B550 Tomahawk is an interesting model as MSI seems to have shifted its marketing position going from a solid entry-level model to a more premium offering. For MSI’s MSRP of $180, MSI includes dual Ethernet which its only B550 model at present to feature this, as well as slotting in Realtek 2.5 G Ethernet controller for good measure. It has all the hallmarks of its X570 counterpart, aside from full native PCIe 4.0 support, no Wi-Fi, and fewer USB 3.2 G2 connectivity, but at just $20 cheaper. It’s hard to make a case to not opt for the fully-fledged MSI X570 Tomahawk over this model.

MSI MPG B550 Gaming Plus MSI MAG B550M Mortar & B550M Mortar Wifi
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  • kerwyn - Monday, June 29, 2020 - link

    The second M.2 slot for the Aorus Elite seems to support PCIE3.0x2 instead of x4 stated in the review unless I read wrong. Could anyone else confirm? This is the swaying factor for me to lean towards the Mortar. Specs from Gigabyte website below:

    Storage Interface
    1‎ x M.2 connector (M2A_CPU), integrated in the CPU, supporting Socket 3, M key, type 2242/2260/2280/22110 SSDs:
    3rd Generation AMD Ryzen™ processors support SATA and PCIe 4.0 x4/x2 SSDs
    3rd Generation AMD Ryzen™ with Radeon™ Graphics processors support SATA and PCIe 3.0 x4/x2 SSDs
    1 x M.2 connector (M2B_SB), integrated in the Chipset, supporting Socket 3, M key, type 2242/2260/2280 SSDs:
    Supporting SATA and PCIe 3.0 x2 SSDs
  • sd7832kjd3bcds - Tuesday, June 30, 2020 - link

    Almost all of the boards include PS/2 connector. Why they put it in 2020? They stopped making PS/2 devices 15 years ago. Better would be to have an empty space there.
  • Ethos Evoss - Sunday, July 5, 2020 - link

    I ordered this then I quickly cancelled and ordered B550I AORUS PRO AX
  • Questor - Sunday, July 12, 2020 - link

    "One of the main complaints about the AMD X570 motherboard line was the wide variation in pricing."

    This can't be said of Intel based motherboards? Yes it can and accurately so. What is the point with this pointless statement?
  • Cards_ - Sunday, July 26, 2020 - link

    Does the WiFi module connect to any WiFi Network, or is it only ASUS Networks if so would I need to buy a WiFi adapter?
  • CamoGeko - Sunday, August 30, 2020 - link

    Hey, so is there any cheaper alternative to the Aorus 550M Pro with similar or better feature set? I'm in the middle of building a Ryzen system with 3300X and motherboard is the last thing I need to decide on. Other mATX at the same price or cheaper just don't look as good as the B550M Aorus Pro.
  • Iqbalusamah - Sunday, October 25, 2020 - link

    I need help..the mob manual says the m.2 slot for the chipset suport sata n pcie 3.0x2..but this review says it suport pci3.0x4..i bought a samsung 970 evo with a pcie 3.0x4..can it be used in the slot
  • Iqbalusamah - Sunday, October 25, 2020 - link

    Help me..i cant understand which one is true..the 2nd m.2 slot for chipset runs at pci3.0x4 or pcie 3.0x2(mob manual).and can a pcie3.0x4 be used in the slot
  • Zwirley - Sunday, July 18, 2021 - link

    Question, is this board capable of overclocking and does it have a good power phase design? I was wondering because I want to build an all-white system but then came across another concern of this motherboard and that is if this supports BIOS Flashback feature so that I don't have to go out of my way to purchase an older gen CPU for it to support my 5900x
  • charlesa365 - Tuesday, August 3, 2021 - link

    My personal computer running Debian has had four GIGABYTE B550 Vision D motherboards. The first and fourth had NIC initialisation on power up problems. The second one's NICs died after ~6 months. The third did not show voltage/temperature values properly. GIGABYTE warranty agents wrote "We do not give support to Debian OS".

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