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MSI · AM4 · B550M

MSI MAG B550M Mortar MAX WiFi

Micro-ATX · DDR4 · 4 DIMMs · 8-phase VRM · Wi-Fi 6E

Quality
61
VRM
25
Value
44
Amazon
$266
MSI MAG B550M Mortar MAX WiFi
View MSI MAG B550M Mortar MAX WiFi Gallery in high resolution
$266
Unavailable Updated 2 weeks, 2 days ago
Overall61.0
VRM25.0
Chipset81.0
Expansion / storage58.0
Connectivity60.0
Audio81.0
Quality / price43.5
$266 on Amazon Motherboard table Compare this motherboard

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Written analysis

MSI MAG B550M Mortar MAX WiFi at a glance

The MSI MAG B550M Mortar MAX WiFi uses the Micro-ATX form factor, AM4 socket, and B550M chipset. This is a balanced mainstream platform: enough expansion and connectivity for a performance PC without paying only for flagship extras.

Memory support is DDR4 across 4 DIMM slots, with up to 128 GB and rated overclocked speeds up to 4400 MT/s. ECC modules are accepted, subject to CPU support. XMP / EXPO memory-profile support is recorded for easier tuning.

Best fit: a performance gaming and productivity PC that needs a balanced board without workstation-class excess.

Power delivery

The calculated VRM score is 25.0, placing the power delivery in the basic class. The board lists 8 CPU power phases, 60 A power stages in a 8+2+1 layout. CPU power input is listed as 1. Keep it paired with lower-power processors and avoid sustained overclocked loads.

Expansion and storage

The expansion and storage score is 58.0: balanced . The platform supports PCIe 4.0. Physical expansion includes 2 ×16 slots, and 2 ×1.

On-board storage consists of 2 M.2 slots and 6 SATA ports. Supported M.2 lengths are listed as 2242, 2260, 2280. The two-slot layout covers a typical OS-and-games or OS-and-project-drive setup.

Connectivity and rear I/O

The connectivity score is 60.0, rated adequate . Wireless networking is Wi-Fi 6E ; wired networking is 1x Realtek® RTL8125B 2.5Gbps LAN controller, 1x Realtek® RTL8111H 1Gbps LAN controller at up to 2500 Mbps. Bluetooth 5.2 is included. The recorded USB provision is 6 rear connections and 1 front-panel connections. The specification sheet below separates every USB speed and connector type.

Display connectivity includes HDMI 2.1, DisplayPort. These motherboard outputs require a processor with integrated graphics.

Audio

The audio score is 81.0. This is a high-end onboard implementation using Realtek® ALC1220P Codec, suitable for good headsets, powered speakers, and everyday content work. Optical S/PDIF is present for digital audio equipment.

Buying verdict

Overall quality is 61.00, a mainstream result. The essential platform features are covered, while premium I/O and tuning extras are more selective.

At the recorded Amazon price, the quality-to-price score is 43.5. The nearby-board comparison below may reveal a better-equipped option at a similar price.

Board data

Full specifications

Platform, expansion, storage, rear I/O, internal headers, networking, audio, and board controls in one sheet.

General

Manufacturer
MSI
Motherboard
MSI MAG B550M Mortar MAX WiFi
Chipset / socket
B550M / AM4
Form factor
Micro-ATX
Launch price
—
Amazon price
$266
Availability
Unavailable
Price updated
2 weeks, 2 days ago

VRM

CPU phases
8 (60 A)
Power design
8+2+1
EPS connector
1

Memory

Type / slots
DDR4 / 4 DIMMs
Max capacity / OC
128 GB / 4400 MT/s
XMP / EXPO
Yes
ECC
Modules supported

PCIe

Supported version
PCIe 4.0
x16 physical
2
x16 Gen 4
1
x16 Gen 3
1
x1 physical
2
x1 Gen 3
2

Storage

M.2 slots
2
M.2 lengths
2242, 2260, 2280
SATA ports
6

Display outputs

HDMI
Yes · 2.1 · 4096x2160 @60Hz
DisplayPort
Yes · 4096x2160 @60Hz
USB-C DisplayPort
No

USB

Rear USB 2.0
2
Rear USB 3.2 Gen 1 Type-A 5 Gbps
2
Rear USB 3.2 Gen 2 Type-A 10 Gbps
1
Rear USB 3.2 Gen 2 Type-C 10 Gbps
1
Front USB 3.2 Gen 1 Type-C 5 Gbps
1
Header USB 2.0
4
Header USB 3.2 Gen 1 Type-A 5 Gbps
2

Networking

Ethernet
1x Realtek® RTL8125B 2.5Gbps LAN controller, 1x Realtek® RTL8111H 1Gbps LAN controller
LAN ports
2
LAN speed
2500 Mbps
Wi-Fi
Wi-Fi 6E
Wi-Fi bandwidth
20MHz, 40MHz, 80MHz
Bands
2.4GHz, 5GHz, 6GHz
Bluetooth
5.2

Audio

Chipset
Realtek® ALC1220P Codec
Analog jacks
—
Gold-plated jacks
No
Optical S/PDIF
Yes
Spatial audio
No

Buttons

BIOS flashback
Yes
Clear CMOS
No
Q-Flash Plus
No
Smart button
No
Onboard start / reset
No

Additional information

Memory notes
Supports DDR4 memory. JEDEC speeds supported are 1866/ 2133/ 2400/ 2667/ 2800/ 2933/ 3000/ 3066/ 3200 MHz. A-XMP OC MODE supports speeds of 2667/ 2800/ 2933/ 3000/ 3066/ 3200/ 3466/ 3600/ 3733/ 3866/ 4000/ 4133/ 4266/ 4400+ MHz. Max speed depends on DIMM configuration: 1DPC 1R max 4400 MHz, 1DPC 2R max 3733 MHz, 2DPC 1R max 3866 MHz, 2DPC 2R max 3466 MHz. Supports non-ECC and ECC UDIMM memory, but ECC modules operate in non-ECC mode. Also supports un-buffered memory.
Display notes
Supports HDCP 1.4 & 2.3. Maximum shared memory of 16 GB. Video output is available for processors with integrated graphics, and specifications may vary depending on the CPU installed.
Expansion notes
PCI_E1: The supported specification depends on installed processor. PCI_E4: supports x4 mode. PCI_E4 will be unavailable when an M.2 SSD is installed in the M2_2 slot.
M2_1
4.0 4 · SATA · 2242, 2260, 2280 · AMD processor — The supported PCIe version (4.0 or 3.0) depends on the installed processor.
M2_2
3.0 4 · 2242, 2260, 2280 · AMD B550 chipset
Storage notes
The supported specification depends on installed processor.
Audio notes
7.1-Channel High Definition Audio. Supports S/PDIF output.
Networking notes
The wireless module is AMD Wi-Fi 6E, pre-installed in the M.2 (Key-E) slot. It supports MU-MIMO TX/RX. Wi-Fi 6E 6GHz may depend on every country’s regulations and will be ready in Windows 10 version 21H1 and Windows 11.
Button notes
The board features a Flash BIOS Button. It does not have a Clear CMOS button, but it does include a Clear CMOS jumper.
Fan / RGB headers
1 CPU · — OPT · 1 AIO · 3 chassis · 2 ARGB · 1 RGB
Other headers
Front audio · System panel · TPM
Dimensions
30.5 cm x 24.4 cm

Extracted notes sit here. Official manufacturer copy is at the bottom of the page.

Amazon

Price history

Nearby quality

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VRM fit

VRM-appropriate CPUs

AM4 processors whose TDP sits in this board’s VRM window. Socket match is required; chipset extras still matter on sTR5. This is a power-delivery filter, not a ranked CPU guide.

Open AM4 CPUs in the CPU table

Discussion

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Vendor copy

Official manufacturer data

Raw manufacturer text kept for reference. Structured specs above are extracted from this copy and are the source for scores and tables.

Memory

4x DDR4 memory slots, support up to 128GB 1
Supports DDR4 1866/ 2133/ 2400/ 2667/ 2800/ 2933/ 3000/ 3066/ 3200 MHz by JEDEC
Supports DDR4 2667/ 2800/ 2933/ 3000/ 3066/ 3200/ 3466/ 3600/ 3733/ 3866/ 4000/ 4133/ 4266/ 4400+ MHz by A-XMP OC MODE
1DPC 1R max speed 4400 MHZ
1DPC 2R max speed 3733 MHZ
2DPC 1R max speed 3866 MHZ
2DPC 2R max speed 3466 MHZ
Dual channel memory architecture
Supports non-ECC UDIMM memory
Supports ECC UDIMM memory (non-ECC mode)
Supports un-buffered memory
Please refer www.msi.com for more information on compatible memory.

Graphics

1x HDMI™ 2.1 port, supports a maximum resolution of 4096x2160 @60Hz 1 2
Support HDCP 1.4 & 2.3
1x DisplayPort, supports a maximum resolution of 4096x2160 @60Hz 1
Maximum shared memory of 16 GB
Available for the processor with integrated graphics.
Graphics specifications may vary depending on the CPU installed.

Expansion slots

1x PCIe 3.0/ 4.0 x16 slot (PCI_E1) 1
1x PCIe 3.0 x16 slot (PCI_E4), supports x4 mode 2
2x PCIe 3.0 x1 slots
The supported specification depends on installed processor.
PCI_E4 will be unavailable when an M.2 SSD is installed in the M2_2 slot.

Storage

AMD B550 Chipset
6x SATA 6Gb/s ports
2x M.2 slots (Key M)
M2_1 slot (from AMD processor)
Supports PCIe 4.0/ 3.0 x4 1
Supports SATA 6Gb/s
Supports 2242/ 2260/ 2280 storage devices
M2_2 slot (from AMD B550 chipset)
Supports PCIe 3.0x4
Supports 2242/ 2260/ 2280 storage devices
The supported specification depends on installed processor.

USB

AMD B550 Chipset
3x USB 3.2 Gen 1 5Gbps ports (1 Type-C internal connector, and 2 ports are available through the internal USB 3.2 Gen 1 5Gbps connector)
6x USB 2.0 ports (2 Type-A ports on the back panel, 4 ports through the internal USB 2.0 connectors)
AMD Processor
2x USB 3.2 Gen 2 10Gbps ports (1 Type-C port and 1 Type-A port on the back panel)
2x USB 3.2 Gen 1 5Gbps Type-A ports on the back panel

Internal I/O

1x 24-pin ATX main power connector
1x 8-pin ATX 12V power connector
6x SATA 6Gb/s connectors
2x M.2 slots (M-Key)
1x USB 3.2 Gen 1 5Gbps Type-C port
1x USB 3.2 Gen 1 5Gbps connector (supports additional 2 USB 3.2 Gen 1 5Gbps ports)
2x USB 2.0 connectors (supports additional 4 USB 2.0 ports)
1x 4-pin CPU fan connector
1x 4-pin water-pump fan connector
3x 4-pin system fan connectors
1x Front panel audio connector
2x System panel connectors
1x Chassis Intrusion connector
1x 4-pin RGB LED connector
2x 3-pin RAINBOW LED connectors
1xTPM module connector
1x Clear CMOS jumper

Rear I/O

DisplayPort 1.4
PS/2 Combo Port
2.5G LAN Port
USB 3.2 Gen 2 10Gbps Type-A
Wi-Fi / Bluetooth Antenna
HD Audio Connectors
HDMI™ 2.1 Port
Flash BIOS Button
USB 2.0 Port
USB 3.2 Gen 1 5Gbps Type-A
USB 3.2 Gen 2 10Gbps Type-C
Optical S/PDIF OUT

Wireless

AMD® Wi-Fi 6E1
The Wireless module is pre-installed in the M.2 (Key-E) slot
Supports MU-MIMO TX/RX
Supports 20MHz, 40MHz, 80MHz bandwidth in 2.4GHz/ 5GHz or 6GHz bands
Supports 802.11 a/ b/ g/ n/ ac/ ax
Supports Bluetooth® 5.22
Wi-Fi 6E 6GHz may depend on every country’s regulations and will be ready in Windows 10 version 21H1 and Windows 11

Audio

Realtek® ALC1220P Codec
7.1-Channel High Definition Audio
Supports S/PDIF output

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