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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  • sh009vf5ik1a - Saturday, January 18, 2020 - link

    Heads up on the Gigabyte B450 DS3H...

    This article pretty clearly states ECC memory is supported on this board, and so does Gigabyte's product page, however it fails to mention that 'supported' means just boot support. The actual Error Checking and Correction features are missing and unable to be leveraged.

    I purchased this board purely based on this article for the sole reason of having a cheap ECC setup. Combined it with a Ryzen 2600 and Unbuffered Kingston ECC memory, and found that its impossible to get ECC working.

    The system boots and works, but you do not get ECC functionality.
  • chrcoluk - Monday, August 30, 2021 - link

    I read on reddit someone wrongfully stated the 2nd 16x slot is only pci gen 2. I wondered how they got this info, I then came across this review, which also states the 2nd 16x slow is gen 2.

    According to the manual both slots are gen 3 and both are hooked to the cpu.

    I have confirmed this as I now use an asmedia 1604 sata card, on post it reports what pci-e mode its in, if I use any of the x1 slots it reports gen 2 x1, if I use either of the x16 slots it reports gen 3 x1 (its limited to one lane). I actually have even moved the gpu to the second x16 slot as its easier to plug in cables to the sata card when its in a higher slot and even gpuz reports the gpu is on pcie gen 3.

    Whats the lesson? read the manual, test and dont take what a media rep tells you for gospel ;)

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