OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using Motherboards Methodology v3.0
Motherboards Methodology v3.0
Mathematical & Unbiased Scoring
Products in this category are scored under Frontum Motherboards Methodology v3.0: the technical score from the specifications is the base, and independent expert and video reviews (up to ±0.5 points), owner opinions (up to ±0.3) and best-of lists (up to +0.3) move it up or down.
Explore Motherboards Methodology v3.0

MSI MAG B550M Mortar review: 109 specs compared

Avg. price:~£160CPU socket:AM4Chipset:AMD B550Form factor:microATX

MSI MAG B550M Mortar Review: Compare 109 technical specifications and 9 expert and video reviews to see how this product ranks in the Motherboards category and whether it is worth buying.

MSI MAG B550M Mortar
7.5/10

Overall score

Score
7.5/ 10
✕
What it is
Our main score for this model, 1–10. It combines specs, expert reviews, best-of lists, owners and ratings from across the web.
How we count it
Parts: Technical score 40%, Reviews score 20%, List score 20%, Sentiment score 10%, User score 10%
Marks: Each part gets a mark out of 10. For reviews, lists and owners, a typical model in this category gets about 8 and the best one gets 10.
No data yet: A part with no data shows "?". It counts as the mark of a weaker model in this category (4 in 5 models with data score higher). This way, models with reviews, lists and owners usually come out ahead.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 71% of models
Score components

40%

6.3

Technical score

20%

8.7

Reviews score

20%

?

List scoreNot enough data yet, so we use 7.5, the mark of a weaker model in this category

10%

8.5

Sentiment score

10%

9.3

User score

â–²Better than 71% of motherboards
8.2

Value for money

Value for money
8.2/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 78% of models
Score components

70%

7.5

Overall score

30%

9.7

Price

â–²Better than 78%
6.3

Technical score

Technical score
6.3/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 40% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 54% of models
Score components

19%

6.9

Memory

16%

8.4

Platform

16%

5.5

Storage

15%

7.4

Network

13%

3.2

Ports

8%

3.7

Expansion

8%

6.6

Power & Cooling

5%

8.5

Audio

â–²Better than 54%
8.7

Reviews score

Reviews score
8.7/ 10
✕
What it is
Average grade from independent test sites, magazines and video reviewers, 1–10.
How we count it
Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.8 for now.
Share: Reviews count 20% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 88% of models

80%

8.6

Average grade

20%

9.0

Popularity

Grades by review (9)
5 reviews: 4 with a printed score, 1 estimated from the review. 4 video reviews, each counting half as much as a written test. Reviews count 20% of the overall score.
Ratings from across the web count in the User score, not in this score.
â–²Better than 88%
9.3

User score

User score
9.3/ 10
✕
What it is
How happy buyers are with this model, based on ratings from across the web.
How we count it
Enough data: A model needs at least 1 rating from across the web. Without one, it counts as 7.9, the mark of a weaker rated model in this category.
Share: User score counts 10% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
★ Better than 91% of models

70%

9.0

Rating

30%

10

Popularity

★Better than 91%
?

List score

List score
7.5/ 10
✕
What it is
How often independent test sites, magazines and video reviewers put this model in their best-of lists for this category.
How we count it
Points: The model in the most lists of this category gets 10; the others get 8 to 10 in proportion. In no list yet: 7.5. Lists count 20% of the overall score.
Enough data: Every list counts, even a single one. With fewer than 5 best-of lists in the category, this part is left out.
Lists with this model (0)
Not in any best-of list yet, so this part counts as 7.5. Models in a list get 8 to 10.
Not in any best-of list yet
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Where to buy
*As an Amazon Associate, we earn from qualifying purchases.
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.

What reviewers say about the MSI MAG B550M Mortar

Based on 5 · 4

Reviewers like the Wi-Fi, Bluetooth and performance, but the rear port selection is the main complaint.
Praised
Criticised
Pick a topic to see who said what

What owners say about the MSI MAG B550M Mortar

Based on 84 owners sharing their experience in online comments

48%positive3%mixed49%negative

Owners value strong performance and helpful BIOS tools, but failed updates, boot problems, and wireless instability remain major frustrations.

What owners dislike

  • BIOS updates fail, hang, or brick boards14
  • Some boards show no display and do not reach the BIOS after a BIOS update or CSM change, with the CPU LED staying on and the PC not booting.9
  • Secure Boot setup can fail: the option may be missing or greyed out, and switching from Legacy/MBR to UEFI can stop Windows from booting.8
  • Some owners report the built-in Wi-Fi and Bluetooth stop working after installing the drivers, even on a fresh build.5
  • Some owners report RAM above 2666MHz does not work, and a few get a black screen at 3200MHz; the board is fussy about memory and needs the certified RAM list.5
  • Some owners report blue screens, crashes, and stuttering in games, and a few say the problems began after a Windows 11 switch.5
  • Some boards arrive dead, with the PC turning on but no signal on the monitor, or with no power at all.4
  • Some owners cannot see an M.2 SSD in the BIOS, and the SSD is sometimes not detected in the main M.2 slot; a second slot worked for one owner.4

Points mentioned by at least 3 owners, most mentioned first.

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Motherboards model ranking

Ranked #508 of 2,078 models in Motherboards (Overall score)

Technical Specifications of motherboard MSI MAG B550M Mortar

Technical score
Technical score
6.3/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 40% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 54% of models
Score components:

19%

6.9

Memory

16%

8.4

Platform

16%

5.5

Storage

15%

7.4

Network

13%

3.2

Ports

8%

3.7

Expansion

8%

6.6

Power & Cooling

5%

8.5

Audio

6.3
Reviews score
8.7
User score
9.3
List score
?
Value for money
Value for money
8.2/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 78% of models
Score components:

70%

7.5

Overall score

30%

9.7

Price

8.2
CPU socket
AM4
This motherboard uses AM4, which is more up-to-date than 38.2% of Motherboards and the same as 13.3% of Motherboards.
CPU platform
AMD
Chipset
AMD B550
This motherboard uses AMD B550, which is more capable than 49.9% of Motherboards and as capable as 4.8% of Motherboards.
Form factor
microATX
Integrated graphics support
yes
This motherboard supports integrated graphics. 10.2% of motherboards support this feature.
Show more
DDR memory version
DDR4
This motherboard uses DDR4, which is more modern than 13.4% of Motherboards and the same as 50.4% of Motherboards.
Memory slots
4
Market range: <2 – >4
This motherboard has 4 Memory slots, which is more than 21.9% of motherboards and equal to 72% of motherboards.
Maximum memory capacity
128 GB
Market range: <32 GB – >256 GB
This motherboard supports up to 128 GB of memory, which is more than 40.1% of motherboards and equal to 31.9% of motherboards.
Memory channels
2
Maximum RAM speed
4,400 MT/s
Market range: <2.1k MT/s – >8k MT/s
This motherboard supports memory speeds up to 4,400 MT/s, which is lower than that of 51.4% of motherboards and equal to that of 3% of motherboards.
Show more
N. of M.2 sockets
2
Market range: <0 – >4
This motherboard has 2 M.2 sockets, which is more than 30.5% of motherboards and equal to 34.5% of motherboards.
M.2 slot interface per slot
1x PCIe 4.0 x4, 1x PCIe 3.0 x4/SATA
This motherboard offers M.2 slots: 1x PCIe 4.0x4, 1x PCIe 3.0x4/SATA, which is faster than 53.1% of Motherboards and the same as 2.4% of Motherboards.
N. of SATA 3 connectors
6
Market range: <4 – >8
This motherboard has 6 SATA 3 connectors, which is more than 53.5% of motherboards and equal to 31.2% of motherboards.
Supported RAID levels
0/1/10
This motherboard RAID support: 0/1/10, which is less flexible than 67.6% of Motherboards and the same as 23.6% of Motherboards.
NVMe RAID support
yes
This motherboard supports NVMe RAID. 40.2% of motherboards support this feature.
Show more
N. of PCIe 5.0 x16 slots
0
Market range: <0 – >1
This motherboard has 0 PCIe 5.0x16 slots, which is fewer than 31.6% of motherboards and equal to 68.4% of motherboards.
N. of PCIe 4.0 x16 slots
1
Market range: <0 – >1
This motherboard has 1 PCIe 4.0x16 slots, which is more than 55.2% of motherboards and equal to 35.7% of motherboards.
N. of PCIe 3.0 x16 slots
1
Market range: <0 – >3
This motherboard 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
x16
This motherboard splits its PCIe lanes as x16, which is less generous than 81% of Motherboards and the same as 16.1% of Motherboards.
PCIe bifurcation support
no
This motherboard does not support PCIe bifurcation. 59.8% of motherboards support this feature.
Show more
Total USB ports (rear I/O)
6
Market range: <6 – >10
This motherboard has 6 USB ports (rear I/O), which is fewer than 63.8% of motherboards and equal to 32.8% of motherboards.
Total USB ports (including headers)
15
Market range: <11 – >19
This motherboard has 15 USB ports (including headers), which is more than 47.7% of motherboards and equal to 13.5% of motherboards.
Total USB-C ports (rear I/O)
0
Market range: <0 – >2
This motherboard has 0 USB-C ports (rear I/O), which is fewer than 64.2% of motherboards and equal to 35.8% of motherboards.
Total USB-C ports (including headers)
2
Market range: <0 – >3
This motherboard has 2 USB-C ports (including headers), which is more than 51.7% of motherboards and equal to 33% of motherboards.
includes internal USB-C header.
N. of USB 3.2 Gen2x2 ports (USB-C)
0
Market range: <0 – >1
This motherboard has 0 USB 3.2 Gen2x2 ports (USB-C), which is fewer than 18% of motherboards and equal to 82% of motherboards.
10Gbps excluded.
Show more
What reviewers say
LAN speed
2.5 Gbps
Market range: <1 Gbps – >2.5 Gbps
This motherboard supports LAN speeds up to 2.5 Gbps, which is higher than that of 49% of motherboards and equal to that of 41.4% of motherboards.
LAN controller
Realtek RTL8125B
This motherboard has a Realtek RTL8125B LAN controller, which is faster than 70.4% of Motherboards and equal to 12.2% of Motherboards.
N. of RJ45 ports
1
Market range: <1 – >2
This motherboard has 1 RJ45 ports, which is fewer than 14.4% of motherboards and equal to 85.6% of motherboards.
Wi-Fi connectivity
no
This motherboard does not support Wi-Fi connectivity. 50.1% of motherboards support this feature.
Wi-Fi version
Wi-Fi 6 (802.11ax)
This motherboard uses Wi-Fi 6 (802.11ax), which is newer than 60.3% of Motherboards and the same as 11.2% of Motherboards.
Show more
What reviewers say
Audio codec
Realtek ALC1200
This motherboard uses Realtek ALC1200, which is higher-end than 63.1% of Motherboards and the same as 2.4% of Motherboards.
Audio channels
7.1
This motherboard offers 7.1 audio channels, which is more than 4.7% of motherboards and equal to 95.3% of motherboards.
Audio SNR
110 dB
Market range: <95 dB – >120 dB
This motherboard has an audio SNR of 110 dB, which is lower than that of 54.6% of motherboards and equal to that of 5.4% of motherboards.
Headphone amp support
yes
This motherboard supports a headphone amp. 41.2% of motherboards support this feature.
N. of 3.5mm audio jacks
5
Market range: <2 – >6
This motherboard has 5 3.5mm audio jacks, which is more than 50.6% of motherboards and equal to 36.3% of motherboards.
Show more
VRM phases
8+2+1
This motherboard 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
1
Market range: <1 – >2
This motherboard has 1 CPU power connectors, which is fewer than 45.2% of motherboards and equal to 54.9% of motherboards.
N. of fan headers
5
Market range: <3 – >8
This motherboard has 5 fan headers, which is fewer than 50% of motherboards and equal to 14.6% of motherboards.
Pump header
yes
This motherboard has a pump header. 22.1% of motherboards include this feature.
Pump header max current
3 A
Market range: <0 A – >3 A
This motherboard supports up to 3 A on the pump header, which is higher than that of 77.8% of motherboards and equal to that of 22.2% of motherboards.
Show more

MSI MAG B550M Mortar vs the average motherboard

246810TotalPlatformMemoryStorageExpansionPortsNetworkAudioPower & Cooling
  • More capable LAN controller
    This motherboard has a faster LAN controller than the average motherboard (Realtek RTL8125B vs Killer + Intel + Realtek).
    Realtek RTL8125B vs Killer + Intel + Realtek
  • Integrated I/O shield
    This motherboard has an integrated I/O shield, while the average motherboard does not. 46.6% of motherboards include an integrated I/O shield.
  • 1 more USB 3.2 Gen2 USB-C ports
    This motherboard 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
    This motherboard 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
  • More capable onboard audio
    This motherboard has a higher-end audio codec than the average motherboard (Realtek ALC1200 vs Realtek ALC897).
    Realtek ALC1200 vs Realtek ALC897
  • More up-to-date socket
    This motherboard uses a more up-to-date socket than the average motherboard (AM4 vs LGA 1151).
    AM4 vs LGA 1,151
  • 19.2% higher review score
    Reviews score
    8.7/ 10
    ✕
    What it is
    Average grade from independent test sites, magazines and video reviewers, 1–10.
    How we count it
    Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
    Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
    Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.8 for now.
    Share: Reviews count 20% of the overall score.
    Score distribution
    â–¼
    <55-66-77-88-99-10
    â–² Better than 88% of models

    80%

    8.6

    Average grade

    20%

    9.0

    Popularity

    Grades by review (9)
    5 reviews: 4 with a printed score, 1 estimated from the review. 4 video reviews, each counting half as much as a written test. Reviews count 20% of the overall score.
    Ratings from across the web count in the User score, not in this score.
    8.7 vs 7.3
  • 1 more USB 3.2 Gen2 headers
    This motherboard 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
  • 19.2% higher review score
    Reviews score
    8.7/ 10
    ✕
    What it is
    Average grade from independent test sites, magazines and video reviewers, 1–10.
    How we count it
    Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
    Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
    Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.8 for now.
    Share: Reviews count 20% of the overall score.
    Score distribution
    â–¼
    <55-66-77-88-99-10
    â–² Better than 88% of models

    80%

    8.6

    Average grade

    20%

    9.0

    Popularity

    Grades by review (9)
    5 reviews: 4 with a printed score, 1 estimated from the review. 4 video reviews, each counting half as much as a written test. Reviews count 20% of the overall score.
    Ratings from across the web count in the User score, not in this score.
    8.7 vs 7.3
  • 25.7% higher user score
    User score
    9.3/ 10
    ✕
    What it is
    How happy buyers are with this model, based on ratings from across the web.
    How we count it
    Enough data: A model needs at least 1 rating from across the web. Without one, it counts as 7.9, the mark of a weaker rated model in this category.
    Share: User score counts 10% of the overall score.
    Score distribution
    â–¼
    <55-66-77-88-99-10
    ★ Better than 91% of models

    70%

    9.0

    Rating

    30%

    10

    Popularity

    9.3 vs 7.4
  • 13.3% higher sentiment score
    8.5 vs 7.5
  • Integrated I/O shield
    This motherboard has an integrated I/O shield, while the average motherboard does not. 46.6% of motherboards include an integrated I/O shield.
  • More up-to-date socket
    This motherboard uses a more up-to-date socket than the average motherboard (AM4 vs LGA 1151).
    AM4 vs LGA 1,151
  • 2 more SATA 3 connectors
    This motherboard has more SATA 3 connectors than the average motherboard (6 vs 4). The average motherboard has 4 SATA 3 connectors.
    6 vs 4
  • 1 more PCIe 4.0x16 slots
    This motherboard 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
  • 1 more PCIe x1 slots
    This motherboard has more PCIe x1 slots than the average motherboard (2 vs 1). The average motherboard has 1 PCIe x1 slot/s.
    2 vs 1
  • 1 more USB 3.2 Gen2 USB-C ports
    This motherboard 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 USB 3.2 Gen2 headers
    This motherboard 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
  • 1 more total USB-C connections
    This motherboard has more total USB-C connections than the average motherboard (2 vs 1). The average motherboard has 1 total USB-C connections.
    includes internal USB-C header.
    2 vs 1
  • More capable LAN controller
    This motherboard has a faster LAN controller than the average motherboard (Realtek RTL8125B vs Killer + Intel + Realtek).
    Realtek RTL8125B vs Killer + Intel + Realtek
  • Supports Bluetooth
    This motherboard supports Bluetooth, while the average motherboard does not. 49% of motherboards support Bluetooth.
  • More recent Wi-Fi standard
    This motherboard has a more recent Wi-Fi standard than the average motherboard (Wi-Fi 6 (802.11ax) vs Wi-Fi 5 (802.11ac)).
    Wi-Fi 6 (802.11ax) vs Wi-Fi 5 (802.11ac)
  • More capable onboard audio
    This motherboard has a higher-end audio codec than the average motherboard (Realtek ALC1200 vs Realtek ALC897).
    Realtek ALC1200 vs Realtek ALC897
  • 2 more 3.5mm audio jacks
    This motherboard has more 3.5mm audio jacks than the average motherboard (5 vs 3). The average motherboard has 3 3.5mm audio jacks.
    5 vs 3
  • Includes onboard RGB lighting
    This motherboard has onboard RGB lighting, while the average motherboard does not. 50% of motherboards include onboard RGB lighting.
    lighting on the chipset heatsink
  • 1 A higher pump header current limit
    This motherboard 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.
    3 A vs 2 A
  • More basic chipset
    This motherboard uses a more basic chipset than the average motherboard (AMD B550 vs Intel B860).
    AMD B550 vs Intel B860
  • 2 fewer rear USB ports
    This motherboard 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 NVMe storage slots
    This motherboard has slower M.2 slots than the average motherboard (1x PCIe 4x4, 1x PCIe 3x4/SATA vs 1x PCIe 5x4, 2x PCIe 4x4).
    1x PCIe 4.0x4, 1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • No Wi-Fi connectivity
    This motherboard does not support Wi-Fi connectivity, while the average motherboard does. 50.1% of motherboards support Wi-Fi connectivity.
  • 1 fewer rear USB-C ports
    This motherboard 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
  • Less generous lane split
    This motherboard splits its PCIe lanes less generously than the average motherboard (x16 vs x16/x0/x4, x8/x8/x4).
    x16 vs x16/x0/x4, x8/x8/x4
  • No PCIe bifurcation support
    This motherboard does not support PCIe bifurcation, while the average motherboard does. 59.7% of motherboards support PCIe bifurcation.
  • Fewer RAID options
    This motherboard offers fewer RAID levels than the average motherboard (0/1/10 vs 0/1/5/10).
    0/1/10 vs 0/1/5/10
  • More basic chipset
    This motherboard uses a more basic chipset than the average motherboard (AMD B550 vs Intel B860).
    AMD B550 vs Intel B860
  • Slower NVMe storage slots
    This motherboard has slower M.2 slots than the average motherboard (1x PCIe 4x4, 1x PCIe 3x4/SATA vs 1x PCIe 5x4, 2x PCIe 4x4).
    1x PCIe 4.0x4, 1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • Fewer RAID options
    This motherboard offers fewer RAID levels than the average motherboard (0/1/10 vs 0/1/5/10).
    0/1/10 vs 0/1/5/10
  • Less generous lane split
    This motherboard splits its PCIe lanes less generously than the average motherboard (x16 vs x16/x0/x4, x8/x8/x4).
    x16 vs x16/x0/x4, x8/x8/x4
  • No PCIe bifurcation support
    This motherboard does not support PCIe bifurcation, while the average motherboard does. 59.7% of motherboards support PCIe bifurcation.
  • 2 fewer rear USB ports
    This motherboard has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
    6 vs 8
  • 1 fewer rear USB-C ports
    This motherboard 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
  • 2 fewer USB 3.2 Gen1 ports
    This motherboard 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.
    2 vs 4
  • No Wi-Fi connectivity
    This motherboard does not support Wi-Fi connectivity, while the average motherboard does. 50.1% of motherboards support Wi-Fi connectivity.
  • 5 dB lower audio SNR
    This motherboard has a lower audio SNR than the average motherboard (110 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
    110 dB vs 115 dB
  • 0.5 fewer fan headers
    This motherboard has fewer fan headers than the average motherboard (5 vs 5.5). The average motherboard has 5.5 fan header/s.
    5 vs 5.5

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

9.0
Solo Gamer Chile
≈ estimated
17/12/2021
Hands-on review · connectivity and VRM check
Verdict
The MSI MAG B550M Mortar is an excellent board for all uses and well suited to Ryzen 5 and 7 processors.
10
Turbo Tortoise Tech
✓ explicit
03/08/2020
Hands-on review · thermal and multi-threaded tests with a CPU
Verdict
MSI MAG B550M Mortar is an excellent board and a strong mid-range pairing for gaming and multi-threaded workloads.
9.0
Realmeltan
≈ estimated
16/07/2020
Hands-on review · BIOS, software and fan tuning tests
Verdict
MSI MAG B550M Mortar is recommended, with an improved BIOS and one software suite for RGB, fans and drivers.
Hands-on video, no verdict
Not graded
Hands-on video, no verdict
Hands-on video, no verdict
Hands-on video, no verdict
Hands-on video, no verdict
Hands-on video, no verdict
Hands-on video, no verdict

Expert reviews

In-depth analysis and verdict from leading tech publications

8.7
techporn.ph
✓ explicit
28/06/2020
Full review · Micro-ATX budget board
Verdict
The MSI MAG B550M Mortar is a budget micro-ATX board that matches X570 speed for Ryzen 3000 CPUs, but drops the chipset's PCIe 4.0 lanes and some USB ports.
7.7
pcgamer.com
✓ explicit
10/07/2020
Full review · Entry-level gaming board
Verdict
The MSI MAG B550M Mortar is an efficient micro-ATX board that performs well at stock speeds and suits gamers who don't overclock, but its overclocking is weak.
8.0
overclockersclub.com
≈ estimated
14/07/2020
Full review · Budget gaming board
Verdict
The MSI MAG B550M Mortar is a compact budget Micro-ATX board with PCIe 4.0 wired straight to the CPU, best for gamers who don't need many USB ports.
8.6
custompc.com
✓ explicit
04/10/2023
Full review · Budget PCIe 4 board
Verdict
The MSI MAG B550M Mortar is a budget board for PCIe 4 storage that handles top Ryzen CPUs, but has no Wi-Fi and few USB ports.
9.2
geeknetic.es
✓ explicit
06/08/2021
Full review · Micro-ATX board
Verdict
The MSI MAG B550M Mortar is a compact Micro-ATX board with a fast main M.2 slot, best suited to single graphics card builds with Ryzen 5000 CPUs.

Third-party reviews

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 don't like 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

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.

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