MSI B450 Tomahawk

The MSI B450M Tomahawk is a direct successor to the B350 Tomahawk we previously reviewed, but with a few visual tweaks and the introduction of RGB LED lighting to the mix to give it a more ‘popular’ reach to those looking to customize their system to fit their components and mood. The B450 Tomahawk sports the same Realtek ALC892 audio codec and the same Realtek 8111H Gigabit LAN controller as the B350 model, and on paper, look very similar.

The main differences come through a new PCIe layout consisting of a full-length PCIe 3.0 x16 slot featuring MSI Steel Armor, with a second full-length slot running at PCIe 2.0 x4 and a trio of PCIe 2.0 x1 ports; these replace the legacy PCI slots featured on the previous B350 Tomahawk. One of the advantages of the B450 chipset over B350 is the memory speeds supported, more specifically due to the refined firmware possessed by the B450 Tomahawk, which allows support for DDR4-3466 with a total of 64 GB of system memory supported over the four available slots. The use of both ECC and non-ECC memory is permitted, although the ECC memory will run in non-ECC mode. The main visual difference is the B450 comes with new but svelte looking heatsinks and the power delivery heatsink has the MSI Arsenal Gaming logo to signify the entry-level gaming range this board represents. MSI also seem to have kept the same 6-phase power delivery running in the same 4+2 configuration as the previous B350 Tomahawk.

Storage wise, the B450 Tomahawk has a total of six SATA ports with four featuring right-angled connectors and two having a straight angled design; RAID 0, 1 and 10 arrays are supported. A Single M.2 slot capable of supporting PCIe 3.0 x4 and SATA drives up to a size of M.2 22110 (22 x 110 mm).

On the rear panel, the B450 Tomahawk includes a BIOS Flashback+ button with two USB 3.1 5 Gbps Type-A ports, two USB 2.0 ports and a USB 3.1 10 Gbps Type-A and Type-C port. Also included is a PS/2 keyboard and mouse combo port, six 3.5mm audio jacks powered by a Realtek ALC892 audio codec, a single LAN port controlled by a Realtek 8111H Gigabit networking chip, and two video outputs consisting of an HDMI 1.4 port and a DVI-D port.

While the B450 Tomahawk offers improved memory speeds, classier heatsinks and a small customizable RGB LED strip in the top right corner of the board, the price is likely to reflect this with a touted price of $109.99 at launch; around $20 more than the B350 Tomahawk. Whether or not the new refreshed Tomahawk matches specification and visual aspirations of users, the extra integrated RGB lighting and new style MSI Arsenal Gaming heatsinks on the B450 chipset come at a more expensive premium.

MSI B450I Gaming Plus AC MSI B450M Bazooka and B450M Bazooka Plus
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  • theanalyzer - Tuesday, July 31, 2018 - link

    Signed up to point that out. Needs to be fixed. It’s the only ITX board supporting 2x which sets it’s apart form the competition
  • Death666Angel - Tuesday, July 31, 2018 - link

    Glad to see more options in the mATX range with two M.2 slots, not just from AsRock this time around. My next rig will either be based on the AsRock B450M Pro4 or one of the MSI B450M Mortar boards. Will wait for actual VRM setup and overclocking results / general tests to see which one will be it. I had motherboards from both manufacturers and was pleased with both. MSI has the advantage of offering PCIe M.2 options for both slots as well as SATA. One question regarding that: if I install a 3.0 PCIe x2 M.2 SSD into a 2.0 PCIe x4 slot, what will be the speed ramifications? Can it only use 2.0 PCIe x2 or can it use the full x4, thus being similar in speed to a native 3.0 PCIe x2 setup? :) Still waiting on mATX x470 mainboards.
  • Outlander_04 - Tuesday, July 31, 2018 - link

    .3.0 x 2 is the same speed as 2.0 x 4
  • DanNeely - Tuesday, July 31, 2018 - link

    Except that a 3.0 x2 drive is almost certainly x2 because it only has 2 PCIe lanes (cutting down on them is one of the ways the cheaper drives pinch pennies), which means it will be connected at 2.0 x2; at that point you might as well just use a SATA drive and save a bit more money.
  • Death666Angel - Tuesday, July 31, 2018 - link

    Thanks for providing an answer to my actual question. :)
  • AdrianB1 - Tuesday, July 31, 2018 - link

    You will get a 2 lane PCIe 2.0 connection, that means 1 GB/s. This is 1/4 of a PCIe 3.0 4-lane usual NVME drive, but real life you may get closer to 80% of the performance.
  • Death666Angel - Tuesday, July 31, 2018 - link

    Thanks!
  • Outlander_04 - Tuesday, July 31, 2018 - link

    Finally some budget boards with solid VRMs.
  • skpetic - Tuesday, July 31, 2018 - link

    There are some seriously shady stuff going on with VRMS om X470 og B450. Check out Buildzoid on youtube. Asus B450 STRIX ITX board is single phase for SoC. Several of the Gigabyte B450 and X470 boards in reality have half the advertised amount of phases or are using doublers:
    https://www.youtube.com/watch?v=3IjWCOXSuKU
  • meacupla - Tuesday, July 31, 2018 - link

    hahaha... no

    Asus with the absolute trash tier VRM heatsinks
    AsRock with fake phases
    Gigabyte with fake phases and trash VRM heatsinks
    MSI with no Vcore offset

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