MSI MAG B550M Mortar Review | 107 Data compared
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MSI MAG B550M Mortar Review | 107 Data compared

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  • Avg. price in UK: ~£160
  • Avg. price in US: ~$140
  • CPU socket: AM4
  • Chipset: AMD B550
  • Form factor: microATX

MSI MAG B550M Mortar review. Compare 107 technical specifications and user reviews to see how this product ranks in the Motherboards category and whether it is worth buying.

7.0

Overall score

What it is: An overall evaluation of the motherboard's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best motherboards on the market.

Score components:

90.0%

6.7

Technical Score

10.0%

9.4

User score

Very good
6.7

Technical Score

What it is: An assessment of technical performance for products in the Motherboards category across these key areas: Platform & Features, Memory, Storage, Expansion, Ports & USB, Network, Audio, Power & Cooling.

When it matters: When you want to compare motherboards based on technical performance and available features.

Score components:

19.0%

6.9

Memory

16.0%

8.5

Platform & Features

16.0%

6.5

Storage

15.0%

8.4

Network

13.0%

3.5

Ports & USB

8.0%

4.5

Expansion

8.0%

6.6

Power & Cooling

5.0%

8.5

Audio

Good
9.4

User score

What it is: A rating that combines user reviews and the total number of reviews received by the motherboard.

When it matters: When you want to understand how a motherboard performs in real-world builds and how reliable it is in terms of stability, BIOS usability, connectivity, and long-term ownership.

Score components:

70.0%

9.1

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.6
(1402)
amazon
4.6
(454)
amazon
4.5
(428)
United States
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4.5
(516)
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4.5
(466)
Amazon_logo.png
4.5
(438)

(Reviews last updated: May 2026)

Exceptional
  • 5.7
    Gaming

    Score components:

    28.0%

    6.0

    VRM phases

    22.0%

    5.5

    N. of M.2 sockets

    18.0%

    10

    LAN speed

    17.0%

    4.9

    Maximum RAM speed

    15.0%

    1.0

    N. of PCIe 5.0 x16 slots

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Best prices in UK

Best rankings

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Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The MSI MAG B550M Mortar is a Micro-ATX motherboard built on the AMD B550 chipset, designed for Socket AM4 processors like the Ryzen 5000 and 3000 series. It features a robust 8+2+1 Duet Rail power system, support for up to 128GB of DDR4 memory at speeds reaching 4400+(OC) MHz, and high-speed connectivity via a PCIe 4.0 x16 slot and a Lightning Gen4 M.2 slot. Key characteristics include 2.5G LAN, a pre-installed I/O shield, and an extended heatsink design with 7W/mK thermal pads to manage high-end CPU heat. Its primary pros are the exceptional VRM performance for its price, solid build quality, and inclusion of a USB 3.2 Gen 2 Type-C port. However, notable cons include the lack of built-in Wi-Fi (available only on the separate 'WiFi' model), a limited number of USB 3.2 ports on the rear, and the fact that populating the second M.2 slot disables the bottom PCIe slot.

Technical Specifications of motherboard MSI MAG B550M Mortar

Technical Score

What it is: An assessment of technical performance for products in the Motherboards category across these key areas: Platform & Features, Memory, Storage, Expansion, Ports & USB, Network, Audio, Power & Cooling.

When it matters: When you want to compare motherboards based on technical performance and available features.

Score components:

19.0%

6.9

Memory

16.0%

8.5

Platform & Features

16.0%

6.5

Storage

15.0%

8.4

Network

13.0%

3.5

Ports & USB

8.0%

4.5

Expansion

8.0%

6.6

Power & Cooling

5.0%

8.5

Audio

6.7
MSI MAG B550M Mortar has a technical score of 6.75 points, which is higher than that of 55.1% of products in this category.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the motherboard.

When it matters: When you want to understand how a motherboard performs in real-world builds and how reliable it is in terms of stability, BIOS usability, connectivity, and long-term ownership.

Score components:

70.0%

9.1

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.6
(1402)
amazon
4.6
(454)
amazon
4.5
(428)
United States
Amazon_logo.png
4.5
(516)
Amazon_logo.png
4.5
(466)
Amazon_logo.png
4.5
(438)

(Reviews last updated: May 2026)

9.4
MSI MAG B550M Mortar has a user score of 9.39 points, which is higher than that of 96.4% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by the motherboard.
When it matters: When you prefer a motherboard that has already been bought and reviewed by many other users.
10
MSI MAG B550M Mortar has a popularity of 10 points, which is higher than 91.5% of products in this category.
Ratio quality/price

What it is: An indicator that combines the motherboard's overall rating with its cost.

When it matters: When you are looking for a motherboard that offers a strong balance of features, performance, and price.

Score components:

60.0%

7.0

Overall score

40.0%

9.7

Price

7.8
MSI MAG B550M Mortar has a quality-to-price ratio of 7.8 points, which is higher than 59.8% of products in this category.
Brand name
What it is: The brand that makes the motherboard.
When it matters: When you have a brand preference for support, BIOS, or build quality.

Importance: LOW

MSI
CPU socket
What it is: The socket type the motherboard is built to support.
When it matters: When you need the motherboard to match a specific CPU.

Importance: HIGH

AM4
MSI MAG B550M Mortar uses the AM4 CPU socket, which is more advanced than that of 38.5% of motherboards and equal to that of 13.3% of motherboards.
CPU platform
What it is: The processor platform supported by the motherboard, indicating compatibility with Intel or AMD processors.
When it matters: When choosing a motherboard to match your chosen processor brand (Intel or AMD).

Importance: LOW

Good value: Intel

AMD
MSI MAG B550M Mortar is built for the AMD CPU platform, which is less common than that of 68.5% of motherboards and equal to that of 31.5% of motherboards.
Chipset
What it is: The chipset that defines the motherboard platform and many of its features.
When it matters: When you compare platform features, connectivity, and CPU support.

Importance: HIGH

AMD B550
MSI MAG B550M Mortar uses the AMD B550 chipset, which is more advanced than that of 50.6% of motherboards and equal to that of 4.4% of motherboards.
Form factor
What it is: The physical size standard of the motherboard, such as ATX or Micro-ATX.
When it matters: When you need the board to fit a specific case size.

Importance: LOW

microATX
MSI MAG B550M Mortar has the microATX form factor, which is less versatile than that of 52.2% of motherboards and equal to that of 32.4% of motherboards.
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DDR memory version
What it is: The RAM generation the motherboard supports, such as DDR4 or DDR5.
When it matters: When you need the board to match a certain memory platform.

Importance: HIGH

Good value: DDR5

DDR4
MSI MAG B550M Mortar uses DDR4 memory, which is newer than that of 13.5% of motherboards and equal to that of 50.8% of motherboards.
Memory slots
What it is: The number of RAM slots on the motherboard.
When it matters: When you want more room for future memory upgrades.

Importance: MEDIUM

Good value: >=4

4
MSI MAG B550M Mortar has 4 Memory slots, which is more than 21.5% of motherboards and equal to 72.5% of motherboards.
Maximum memory capacity
What it is: The largest total amount of RAM the motherboard supports.
When it matters: When you plan a build with very high memory capacity.

Importance: HIGH

Good value: >=128 GB

128 GB
MSI MAG B550M Mortar supports up to 128 GB of memory, which is more than 40.4% of motherboards and equal to 31.9% of motherboards.
Memory channels
What it is: The memory channel configuration supported by the motherboard platform.
When it matters: When memory bandwidth matters for your build.

Importance: LOW

2
MSI MAG B550M Mortar supports 2 memory channels, which is more than 0.2% of motherboards and equal to 92.6% of motherboards.
Maximum RAM speed
What it is: The highest officially supported memory speed for the motherboard.
When it matters: When you choose RAM and want to know the supported speed ceiling.

Importance: LOW

Good value: >=6400 MT/s

4,400 MT/s
MSI MAG B550M Mortar supports memory speeds up to 4,400 MT/s, which is lower than that of 51.5% of motherboards and equal to that of 3% of motherboards.
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N. of M.2 sockets
What it is: The number of M.2 slots available on the motherboard.
When it matters: When you want room for more NVMe or M.2 drives.

Importance: HIGH

Good value: >=3

2
MSI MAG B550M Mortar has 2 M.2 sockets, which is more than 30.8% of motherboards and equal to 34.4% of motherboards.
M.2 slot interface per slot
What it is: The storage or PCIe interface available for each M.2 slot on the motherboard.
When it matters: When you want to check which drives each M.2 slot can use.

Importance: MEDIUM

1x PCIe 4 x4, 1x PCIe 3 x4/SATA
MSI MAG B550M Mortar offers 1x PCIe 4.0x4, 1x PCIe 3.0x4/SATA for M.2 slot interfaces, which is faster than that of 53.2% of motherboards and equal to that of 2.4% of motherboards.
N. of SATA 3 connectors
What it is: The number of SATA 6Gb/s connectors on the motherboard.
When it matters: When you plan to connect multiple SATA drives.

Importance: LOW

Good value: >=6

6
MSI MAG B550M Mortar has 6 SATA 3 connectors, which is more than 52.6% of motherboards and equal to 32.1% of motherboards.
Supported RAID levels
What it is: The RAID modes officially supported by the motherboard storage platform.
When it matters: When you plan to use multiple drives in a RAID setup.

Importance: LOW

0/1/10
MSI MAG B550M Mortar supports RAID levels 0/1/10, which is narrower than 68.1% of motherboards and equal to 23.3% of motherboards.
NVMe RAID support
What it is: Shows whether the board supports RAID configurations that use NVMe SSDs.
When it matters: When you plan to use multiple NVMe drives in RAID.

Importance: MEDIUM

yes
MSI MAG B550M Mortar supports NVMe RAID. 40.3% of motherboards support this feature.
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N. of PCIe 5.0 x16 slots
What it is: The number of PCIe 5.0 x16 physical slots on the motherboard.
When it matters: When you want the newest high-bandwidth expansion slots.

Importance: LOW

Good value: >=1

0
MSI MAG B550M Mortar has 0 PCIe 5.0x16 slots, which is fewer than 31.5% of motherboards and equal to 68.5% of motherboards.
N. of PCIe 4.0 x16 slots
What it is: The number of PCIe 4.0 x16 physical slots on the motherboard.
When it matters: When you want more room for modern expansion cards.

Importance: LOW

Good value: >=1

1
MSI MAG B550M Mortar has 1 PCIe 4.0x16 slots, which is more than 55.5% of motherboards and equal to 35.4% of motherboards.
N. of PCIe 3.0 x16 slots
What it is: The number of PCIe 3.0 x16 physical slots on the motherboard.
When it matters: When you need more full-length expansion slots.

Importance: LOW

1
MSI MAG B550M Mortar has 1 PCIe 3.0x16 slots, which is more than 40.5% of motherboards and equal to 26.8% of motherboards.
PCIe slot electrical configuration
What it is: The actual lane wiring used by the motherboard PCIe slots.
When it matters: When you need to know how much bandwidth each slot really gets.

Importance: LOW

x16
MSI MAG B550M Mortar uses x16 for PCIe slot electrical configuration, which is less flexible than that of 81% of motherboards and equal to that of 16.1% of motherboards.
PCIe bifurcation support
What it is: Shows whether the board can split PCIe lanes across multiple devices from one slot or link.
When it matters: When you plan multi-SSD adapters or more advanced expansion setups.

Importance: LOW

Good value: yes

no
MSI MAG B550M Mortar does not support PCIe bifurcation. 59.7% of motherboards support this feature.
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Total USB ports (rear I/O)
What it is: The total number of rear USB ports available on the motherboard.
When it matters: When you use many USB devices directly from the back of the PC.

Importance: HIGH

Good value: >=8

6
MSI MAG B550M Mortar has 6 USB ports (rear I/O), which is fewer than 64.3% of motherboards and equal to 32.7% of motherboards.
Total USB ports (including headers)
What it is: The total number of USB ports supported when rear ports and internal headers are counted together.
When it matters: When you want to know the board's full USB expansion potential.

Importance: MEDIUM

Good value: >=14

15
MSI MAG B550M Mortar has 15 USB ports (including headers), which is more than 47.6% of motherboards and equal to 13.5% of motherboards.
Total USB-C ports (rear I/O)
What it is: The total number of rear USB-C ports on the motherboard.
When it matters: When you want more USB-C devices connected without adapters.

Importance: MEDIUM

Good value: >=1

0
MSI MAG B550M Mortar has 0 USB-C ports (rear I/O), which is fewer than 64.6% of motherboards and equal to 35.4% of motherboards.
Total USB-C ports (including headers)
What it is: The total number of USB-C ports supported when rear ports and internal headers are counted together.
When it matters: When you want more USB-C connectivity across the whole build.

Importance: LOW

Good value: >=2

2
MSI MAG B550M Mortar has 2 USB-C ports (including headers), which is more than 51.7% of motherboards and equal to 32.9% of motherboards.
includes internal USB-C header.
N. of USB 3.2 Gen2x2 ports (USB-C)
What it is: The number of rear USB 3.2 Gen2x2 Type-C ports on the motherboard.
When it matters: When you want very fast USB-C connectivity on the rear I/O.

Importance: LOW

Good value: >=1

0
MSI MAG B550M Mortar has 0 USB 3.2 Gen2x2 ports (USB-C), which is fewer than 18.3% of motherboards and equal to 81.7% of motherboards.
10Gbps excluded.
Show more
LAN speed
What it is: The maximum wired Ethernet speed supported by the motherboard.
When it matters: When you want faster wired networking.

Importance: HIGH

Good value: 2.5GbE

2.5 Gbps
MSI MAG B550M Mortar supports LAN speeds up to 2.5 Gbps, which is higher than that of 49.3% of motherboards and equal to that of 41.4% of motherboards.
LAN controller
What it is: The model of onboard Ethernet controller used by the motherboard.
When it matters: When you compare networking hardware quality and features.

Importance: MEDIUM

Realtek RTL8125B
MSI MAG B550M Mortar uses the Realtek RTL8,125B LAN controller, which is more advanced than that of 70.4% of motherboards and equal to that of 12.2% of motherboards.
N. of RJ45 ports
What it is: The number of wired Ethernet ports on the motherboard.
When it matters: When you need one or more wired network connections.

Importance: MEDIUM

1
MSI MAG B550M Mortar has 1 RJ45 ports, which is fewer than 14.4% of motherboards and equal to 85.6% of motherboards.
Wi-Fi connectivity
What it is: Shows whether the motherboard includes onboard Wi-Fi hardware instead of requiring a separate adapter.
When it matters: When you want wireless networking without adding an extra card.

Importance: LOW

Good value: yes

no
MSI MAG B550M Mortar does not support Wi-Fi connectivity. 50.1% of motherboards support this feature.
Wi-Fi version
What it is: The supported Wi-Fi generation, such as Wi-Fi 6 or Wi-Fi 7.
When it matters: When you care about wireless speed and router compatibility.

Importance: HIGH

Good value: Wi-Fi 6E (802.11ax)

Wi-Fi 6 (802.11ax)
MSI MAG B550M Mortar supports Wi-Fi 6 (802.11ax), which is newer than that of 60.5% of motherboards and equal to that of 11.6% of motherboards.
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Audio codec
What it is: The onboard audio codec used by the motherboard.
When it matters: When sound quality from the built-in audio matters to you.

Importance: MEDIUM

Realtek ALC1200
MSI MAG B550M Mortar uses the Realtek ALC1,200 audio codec, which is more advanced than that of 62.9% of motherboards and equal to that of 2.4% of motherboards.
Audio channels
What it is: The audio channel configuration supported by the onboard sound solution.
When it matters: When you want surround sound from the motherboard audio outputs.

Importance: LOW

Good value: 7.1

7.1
MSI MAG B550M Mortar offers 7.1 audio channels, which is more than 4.9% of motherboards and equal to 95.1% of motherboards.
Audio SNR
What it is: The signal-to-noise ratio of the onboard audio solution.
When it matters: When you care about cleaner onboard audio output.

Importance: LOW

Good value: >=120 dB

110 dB
MSI MAG B550M Mortar has an audio SNR of 110 dB, which is lower than that of 54.2% of motherboards and equal to that of 5.4% of motherboards.
Headphone amp support
What it is: Shows whether the onboard audio path includes dedicated headphone amplification for harder-to-drive headsets.
When it matters: When you use harder-to-drive headphones from the onboard audio.

Importance: LOW

Good value: yes

yes
MSI MAG B550M Mortar supports a headphone amp. 40.8% of motherboards support this feature.
N. of 3.5mm audio jacks
What it is: The number of rear 3.5mm audio jacks on the motherboard.
When it matters: When you want more analog audio connection options.

Importance: LOW

Good value: >=5

5
MSI MAG B550M Mortar has 5 3.5mm audio jacks, which is more than 49.6% of motherboards and equal to 37% of motherboards.
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VRM phases
What it is: The number of power-delivery phases used by the motherboard VRM.
When it matters: When you care about CPU power delivery and overclocking headroom.

Importance: MEDIUM

Good value: >=12

8+2+1
MSI MAG B550M Mortar has 8+2+1 VRM phases, which is more than 48.1% of motherboards and equal to 2.1% of motherboards.
N. of CPU power connectors
What it is: The number of CPU power connectors on the motherboard.
When it matters: When you care about power delivery for higher-end CPUs.

Importance: LOW

Good value: >=2

1
MSI MAG B550M Mortar has 1 CPU power connectors, which is fewer than 45.5% of motherboards and equal to 54.5% of motherboards.
N. of fan headers
What it is: The number of headers available for case or CPU fans.
When it matters: When your build uses several fans.

Importance: LOW

Good value: >=6

5
MSI MAG B550M Mortar has 5 fan headers, which is fewer than 50% of motherboards and equal to 14.6% of motherboards.
Pump header
What it is: Shows whether the motherboard includes a dedicated header designed for a liquid-cooling pump.
When it matters: When you build with an AIO or custom liquid cooling loop.

Importance: LOW

Good value: yes

yes
MSI MAG B550M Mortar has a pump header. 21.9% of motherboards include this feature.
Pump header max current
What it is: The maximum current the dedicated pump header can supply.
When it matters: When you want to make sure the pump header can power your cooling setup.

Importance: LOW

Good value: >=2 A

3 A
MSI MAG B550M Mortar supports up to 3 A on the pump header, which is higher than that of 77.8% of motherboards and equal to that of 22.1% of motherboards.
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MSI MAG B550M Mortar vs the average motherboard

  • More advanced LAN controller
    MSI MAG B550M Mortar has better LAN controller than the average motherboard (Realtek RTL8,125B vs Killer + Intel + Realtek). The average motherboard uses Killer + Intel + Realtek LAN controller.
    What it is: The model of onboard Ethernet controller used by the motherboard.
    When it matters: When you compare networking hardware quality and features.

    Importance: MEDIUM

    MSI MAG B550M Mortar has better LAN controller than the average motherboard (Realtek RTL8,125B vs Killer + Intel + Realtek). The average motherboard uses Killer + Intel + Realtek LAN controller.Realtek RTL8125B vs Killer + Intel + Realtek
  • Integrated I/O shield
    MSI MAG B550M Mortar has an integrated I/O shield, while the average motherboard does not. 46% of motherboards include an integrated I/O shield.
    What it is: Shows whether the rear I/O shield comes pre-mounted on the motherboard instead of being installed separately.
    When it matters: When you want an easier motherboard installation process.

    Importance: LOW

    Good value: yes

    MSI MAG B550M Mortar has an integrated I/O shield, while the average motherboard does not. 46% of motherboards include an integrated I/O shield.
  • 1 more USB 3.2 Gen2 USB-C ports
    MSI MAG B550M Mortar has more USB 3.2 Gen2 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 USB-C port/s.
    What it is: The number of rear USB 3.2 Gen2 Type-C ports on the motherboard.
    When it matters: When you want faster rear USB-C connectivity.

    Importance: LOW

    Good value: >=1

    MSI MAG B550M Mortar has more USB 3.2 Gen2 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 USB-C port/s.1 vs 0
  • 1 more PCIe 4.0x16 slots
    MSI MAG B550M Mortar has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.
    What it is: The number of PCIe 4.0 x16 physical slots on the motherboard.
    When it matters: When you want more room for modern expansion cards.

    Importance: LOW

    Good value: >=1

    MSI MAG B550M Mortar has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.1 vs 0
  • Better audio codec
    MSI MAG B550M Mortar has better audio codec than the average motherboard (Realtek ALC1,200 vs Realtek ALC897). The average motherboard uses Realtek ALC897 audio codec.
    What it is: The onboard audio codec used by the motherboard.
    When it matters: When sound quality from the built-in audio matters to you.

    Importance: MEDIUM

    MSI MAG B550M Mortar has better audio codec than the average motherboard (Realtek ALC1,200 vs Realtek ALC897). The average motherboard uses Realtek ALC897 audio codec.Realtek ALC1200 vs Realtek ALC897
  • Newer CPU socket
    MSI MAG B550M Mortar has newer CPU socket than the average motherboard (AM4 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.
    What it is: The socket type the motherboard is built to support.
    When it matters: When you need the motherboard to match a specific CPU.

    Importance: HIGH

    MSI MAG B550M Mortar has newer CPU socket than the average motherboard (AM4 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.AM4 vs LGA 1151
  • 1 more USB 3.2 Gen2 headers
    MSI MAG B550M Mortar has more USB 3.2 Gen2 headers than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 header/s.
    What it is: The number of internal USB 3.2 Gen2 headers for front-panel USB-C ports.
    When it matters: When your case includes front USB-C connectivity.

    Importance: LOW

    Good value: >=1

    MSI MAG B550M Mortar has more USB 3.2 Gen2 headers than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 header/s.1 vs 0
  • Supports Bluetooth
    MSI MAG B550M Mortar supports Bluetooth, while the average motherboard does not. 48.9% of motherboards support Bluetooth.
    What it is: Shows whether the motherboard includes built-in Bluetooth for wireless peripherals and accessories.
    When it matters: When you want to connect wireless peripherals without an adapter.

    Importance: LOW

    Good value: yes

    MSI MAG B550M Mortar supports Bluetooth, while the average motherboard does not. 48.9% of motherboards support Bluetooth.
  • Integrated I/O shield
    MSI MAG B550M Mortar has an integrated I/O shield, while the average motherboard does not. 46% of motherboards include an integrated I/O shield.
  • Newer CPU socket
    MSI MAG B550M Mortar has newer CPU socket than the average motherboard (AM4 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.
  • 2 more SATA 3 connectors
    MSI MAG B550M Mortar has more SATA 3 connectors than the average motherboard (6 vs 4). The average motherboard has 4 SATA 3 connectors.
  • 1 more PCIe 4.0x16 slots
    MSI MAG B550M Mortar has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.
  • 1 more PCIe x1 slots
    MSI MAG B550M Mortar has more PCIe x1 slots than the average motherboard (2 vs 1). The average motherboard has 1 PCIe x1 slot/s.
  • 1 more USB 3.2 Gen2 USB-C ports
    MSI MAG B550M Mortar has more USB 3.2 Gen2 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 USB-C port/s.
  • 1 more USB 3.2 Gen2 headers
    MSI MAG B550M Mortar has more USB 3.2 Gen2 headers than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 header/s.
  • 1 more total USB-C connections
    MSI MAG B550M Mortar has more total USB-C connections than the average motherboard (2 vs 1). The average motherboard has 1 total USB-C connections.
  • More advanced LAN controller
    MSI MAG B550M Mortar has better LAN controller than the average motherboard (Realtek RTL8,125B vs Killer + Intel + Realtek). The average motherboard uses Killer + Intel + Realtek LAN controller.
  • Supports Bluetooth
    MSI MAG B550M Mortar supports Bluetooth, while the average motherboard does not. 48.9% of motherboards support Bluetooth.
  • Newer Wi-Fi standard
    MSI MAG B550M Mortar has newer Wi-Fi standard than the average motherboard (Wi-Fi 6 (802.11ax) vs Wi-Fi 5 (802.11ac)). The average motherboard supports Wi-Fi 5 (802.11ac) Wi-Fi.
  • Better audio codec
    MSI MAG B550M Mortar has better audio codec than the average motherboard (Realtek ALC1,200 vs Realtek ALC897). The average motherboard uses Realtek ALC897 audio codec.
  • 61 mm shorter
    MSI MAG B550M Mortar is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.
  • 1 A higher pump header current limit
    MSI MAG B550M Mortar has a higher pump header current than the average motherboard (3 A vs 2 A). The average motherboard provides pump header current of 2 A.

Total
Overall
Platform & Features
Storage
Expansion
Ports & USB
Network
Audio
Power & Cooling
  • More basic motherboard chipset
    MSI MAG B550M Mortar has more basic motherboard chipset than the average motherboard (AMD B550 vs Intel B860). The average motherboard uses Intel B860 chipset.
  • Older CPU platform
    MSI MAG B550M Mortar uses the AMD CPU platform compared to Intel on the average motherboard. The average motherboard uses Intel CPU platform.
  • Less versatile form factor
    MSI MAG B550M Mortar has less versatile form factor than the average motherboard (microATX vs ATX). The average motherboard comes in ATX form factor.
  • Fewer useful accessories
    MSI MAG B550M Mortar has fewer useful accessories than the average motherboard (2x SATA cables, Wi-Fi antenna, M.2 kit vs 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable). The average motherboard comes with 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable.
  • Slower M.2 slot interfaces
    MSI MAG B550M Mortar has slower M.2 slot interfaces than the average motherboard (1x PCIe 4.0x4, 1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.
  • Fewer RAID options
    MSI MAG B550M Mortar has fewer RAID options than the average motherboard (0/1/10 vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.
  • Less flexible PCIe lane configuration
    MSI MAG B550M Mortar has less flexible PCIe lane configuration than the average motherboard (x16 vs x16/x0/x4, x8/x8/x4). The average motherboard uses x16/x0/x4, x8/x8/x4 PCIe slot lane configuration.
  • No PCIe bifurcation support
    MSI MAG B550M Mortar does not support PCIe bifurcation, while the average motherboard does. 59.7% of motherboards support PCIe bifurcation.
  • 2 fewer rear USB ports
    MSI MAG B550M Mortar has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
  • 1 fewer rear USB-C ports
    MSI MAG B550M Mortar has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.
  • 2 fewer USB 3.2 Gen1 ports
    MSI MAG B550M Mortar has fewer USB 3.2 Gen1 ports than the average motherboard (2 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
  • No Wi-Fi connectivity
    MSI MAG B550M Mortar does not support Wi-Fi connectivity, while the average motherboard does. 50% of motherboards support Wi-Fi connectivity.
  • 5 dB lower audio SNR
    MSI MAG B550M Mortar has a lower audio SNR than the average motherboard (110 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
  • 0.5 fewer fan headers
    MSI MAG B550M Mortar has fewer fan headers than the average motherboard (5 vs 5.5). The average motherboard has 5.5 fan header/s.
  • More basic motherboard chipset
    MSI MAG B550M Mortar has more basic motherboard chipset than the average motherboard (AMD B550 vs Intel B860). The average motherboard uses Intel B860 chipset.
    What it is: The chipset that defines the motherboard platform and many of its features.
    When it matters: When you compare platform features, connectivity, and CPU support.

    Importance: HIGH

    MSI MAG B550M Mortar has more basic motherboard chipset than the average motherboard (AMD B550 vs Intel B860). The average motherboard uses Intel B860 chipset.AMD B550 vs Intel B860
  • 2 fewer rear USB ports
    MSI MAG B550M Mortar has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
    What it is: The total number of rear USB ports available on the motherboard.
    When it matters: When you use many USB devices directly from the back of the PC.

    Importance: HIGH

    Good value: >=8

    MSI MAG B550M Mortar has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.6 vs 8
  • Slower M.2 slot interfaces
    MSI MAG B550M Mortar has slower M.2 slot interfaces than the average motherboard (1x PCIe 4.0x4, 1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.
    What it is: The storage or PCIe interface available for each M.2 slot on the motherboard.
    When it matters: When you want to check which drives each M.2 slot can use.

    Importance: MEDIUM

    MSI MAG B550M Mortar has slower M.2 slot interfaces than the average motherboard (1x PCIe 4.0x4, 1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.1x PCIe 4x4, 1x PCIe 3x4/SATA vs 1x PCIe 5x4, 2x PCIe 4x4
  • 1 fewer rear USB-C ports
    MSI MAG B550M Mortar has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.
    What it is: The total number of rear USB-C ports on the motherboard.
    When it matters: When you want more USB-C devices connected without adapters.

    Importance: MEDIUM

    Good value: >=1

    MSI MAG B550M Mortar has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.0 vs 1
  • No Wi-Fi connectivity
    MSI MAG B550M Mortar does not support Wi-Fi connectivity, while the average motherboard does. 50% of motherboards support Wi-Fi connectivity.
    What it is: Shows whether the motherboard includes onboard Wi-Fi hardware instead of requiring a separate adapter.
    When it matters: When you want wireless networking without adding an extra card.

    Importance: LOW

    Good value: yes

    MSI MAG B550M Mortar does not support Wi-Fi connectivity, while the average motherboard does. 50% of motherboards support Wi-Fi connectivity.
  • Less flexible PCIe lane configuration
    MSI MAG B550M Mortar has less flexible PCIe lane configuration than the average motherboard (x16 vs x16/x0/x4, x8/x8/x4). The average motherboard uses x16/x0/x4, x8/x8/x4 PCIe slot lane configuration.
    What it is: The actual lane wiring used by the motherboard PCIe slots.
    When it matters: When you need to know how much bandwidth each slot really gets.

    Importance: LOW

    MSI MAG B550M Mortar has less flexible PCIe lane configuration than the average motherboard (x16 vs x16/x0/x4, x8/x8/x4). The average motherboard uses x16/x0/x4, x8/x8/x4 PCIe slot lane configuration.x16 vs x16/x0/x4, x8/x8/x4
  • No PCIe bifurcation support
    MSI MAG B550M Mortar does not support PCIe bifurcation, while the average motherboard does. 59.7% of motherboards support PCIe bifurcation.
    What it is: Shows whether the board can split PCIe lanes across multiple devices from one slot or link.
    When it matters: When you plan multi-SSD adapters or more advanced expansion setups.

    Importance: LOW

    Good value: yes

    MSI MAG B550M Mortar does not support PCIe bifurcation, while the average motherboard does. 59.7% of motherboards support PCIe bifurcation.
  • Fewer RAID options
    MSI MAG B550M Mortar has fewer RAID options than the average motherboard (0/1/10 vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.
    What it is: The RAID modes officially supported by the motherboard storage platform.
    When it matters: When you plan to use multiple drives in a RAID setup.

    Importance: LOW

    MSI MAG B550M Mortar has fewer RAID options than the average motherboard (0/1/10 vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.0/1/10 vs 0/1/5/10
Total
Platform & Features
Storage
Expansion
Ports & USB
Network
Audio
Power & Cooling

Graphic comparison of MSI MAG B550M Mortar and other products in the Motherboards category

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Third-party reviews

United Kingdom
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4.6
1402 Reviews
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4.6
454 Reviews
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4.5
428 Reviews
United States
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4.5
516 Reviews
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4.5
466 Reviews
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4.5
438 Reviews

(Reviews last updated: May 2026)

What customers like about MSI MAG B550M Mortar?

  • Robust VRM performance capable of handling high-end Ryzen CPUs
  • Support for PCIe 4.0 for fast storage and GPU speeds
  • High-speed 2.5Gbps LAN for rapid data transfer
  • Integrated I/O shield simplifies the installation process
  • Excellent thermal management with massive heatsinks
  • Budget-friendly alternative to more expensive X570 boards

What customers dislike about MSI MAG B550M Mortar?

  • Overclocking performance is less effective compared to premium rivals
  • Poor placement of the 'Clear CMOS' jumper, often obstructed by GPUs
  • Absence of luxury features like debug LED displays or physical power buttons
  • BIOS interface can feel dated compared to newer competitor designs
  • Micro-ATX form factor limits the number of available PCIe expansion slots
  • Lack of Wi-Fi and Bluetooth on the base non-WiFi variant

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