MSI MAG B550M Mortar & B550M Mortar Wifi

The MSI B550M Mortar Wifi and B550M Mortar are MSI’s only micro-ATX models currently available at launch and represents the Arsenal series which is MSI’s entry-level gaming range. Both models are identical in terms of features and aesthetics, aside from the Wifi version which comes with a Wi-Fi 6 interface. Some of the pairings other features include two M.2 slots, a Realtek ALC1200 HD audio codec, and a Realtek 2.5 GbE Ethernet controller.

Focusing on the design, the MSI MAG B550M Mortar has a very elegant contrasting design, with striking silver heatsinks on a black and grey patterned PCB. The Mortar includes two full-length PCIe slots with a top slot which operates at PCIe 4.0 x16, a second slot is locked to PCIe 3.0 x4, as well as two PCIe 3.0 x1 slots. The storage capabilities include six SATA ports with support for RAID 0, 1, and 10 arrays, with a pair of M.2 slots. The top M.2 slot operates at PCIe 4.0 x4, while the bottom slot operates at just PCIe 3.0 x4. Users can install up to 128 GB of DDR4 across four memory slots, with speeds of up to DDR4-4400 officially supported.

On the rear panel is a pair of USB 3.2 G2 ports including a Type-A and Type-C, with two USB 3.2 G1 Type-A and two USB 2.0 ports. A Realtek RTL8125B 2.5 G Ethernet port takes care of the audio, while the B550M Mortar Wifi model includes an Intel AX200 Wi-Fi 6 interface with support for BT 5.0 devices. The boards five 3.5 mm audio jacks and S/PDIF optical output are controlled by a Realtek ALC1200 HD audio codec, and the pairing also includes an HDMI video output, a BIOS Flashback button, and a PS/2 keyboard and mouse combo port.

The MSI MAG B550M Mortar Wifi has an MSRP of $170, while the non-Wi-Fi version costs $10 cheaper at $160. On paper, the Mortar is similar to the B550 Tomahawk without the additional Realtek Gigabit Ethernet port, and visually it looks like a stylish offering. The B550 Tomahawk does officially feature better memory support, and although MSI aims at a higher with its MAG series in comparison to its B450 models, the Mortar Wifi for $170 looks like a solid alternative.

MSI MAG B550 Tomahawk MSI B550-A Pro
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  • Ghan - Tuesday, June 16, 2020 - link

    Right now, it seems more like B for Backordered. They may be priced a bit high, but the demand still seems to be there.
  • yannigr2 - Tuesday, June 16, 2020 - link

    This is a great article but it needs a follow up with a table for every motherboard explaining how they use the PCIe lanes in conjunction with M2 and SATA slots. It seems that motherboard makers are totally f up(sorry for the expression) the more reasonably priced models in that area.
  • romrunning - Tuesday, June 16, 2020 - link

    Does anyone know if the boards that have the Intel i225-V are shipping with the fixed hardware (v2)?
  • R3MF - Tuesday, June 16, 2020 - link

    +1
  • mooninite - Tuesday, June 16, 2020 - link

    Wow, another broken Intel NIC? I wish motherboards would stop using Intel NICs.
  • mooninite - Tuesday, June 16, 2020 - link

    After Googling it looks like v2 is not fixed either... a v3 is coming out. Time to buy Realtek.
  • romrunning - Wednesday, June 17, 2020 - link

    Which is hilarious - I remember when Realtek was the worst when it came to NICs, and Intel/3Com was the standard. :)
  • WaltC - Wednesday, June 17, 2020 - link

    Yes, indeed...;) My x570 Master has an Intel gigabit & a realtek 2.5gb. It's amusing because my interface is an EWAN that tops out at 1Gb, but I thought I'd try the realtek just to see and then I forgot about it...;)...Seems every bit as stable as the Intel--still on it, lol...;) Six of one, half-dozen of another.
  • eastcoast_pete - Tuesday, June 16, 2020 - link

    Thanks Ian and Gavin! One question, related to a likely use case for B550 mini ITX or mATX Boards: is it true that AMD will, at least initially, limit Ryzen 4000 APUs to OEMs? If that is so, I am definitely not interested in a B550 board in those form factors, and I don't think I am alone here. An answer is appreciated - thanks!
  • mrvco - Tuesday, June 16, 2020 - link

    I'm just here for the Next mini-ITX boards. I'm liking the Aorus Pro AX quite a bit.

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