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MSI · AM5 · B650M

MSI Pro B650M-B

Micro-ATX · DDR5 · 2 DIMMs · 7-phase VRM

Quality
40
VRM
20
Value
55
Amazon
$139
MSI Pro B650M-B
View MSI Pro B650M-B Gallery in high resolution
$139
Unavailable Updated 6 months, 1 week ago
Overall40.4
VRM20.0
Chipset71.0
Expansion / storage37.0
Connectivity34.0
Audio40.0
Quality / price55.2
$139 on Amazon Motherboard table Compare this motherboard

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Written analysis

MSI Pro B650M-B at a glance

The MSI Pro B650M-B uses the Micro-ATX form factor, AM5 socket, and B650M chipset. This is a balanced mainstream platform: enough expansion and connectivity for a performance PC without paying only for flagship extras.

Memory support is DDR5 across 2 DIMM slots, with up to 128 GB and rated overclocked speeds up to 6800 MT/s. XMP / EXPO memory-profile support is recorded for easier tuning.

Best fit: a mainstream gaming, home, or office system with moderate expansion needs.

Power delivery

The calculated VRM score is 20.0, placing the power delivery in the basic class. The board lists 7 CPU power phases, 55 A power stages in a 7+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 37.0: focused on the essentials. The platform supports PCIe 4.0. Physical expansion includes 1 ×16 slot, and 1 ×1.

On-board storage consists of 1 M.2 slot and 4 SATA ports. Supported M.2 lengths are listed as 2280, 2260. The single M.2 slot makes drive planning more important if future expansion matters.

Connectivity and rear I/O

The connectivity score is 34.0, rated essential. There is no recorded onboard Wi-Fi ; wired networking is Realtek® 8125BG 2.5G at up to 2500 Mbps. The recorded USB provision is 6 rear connections and 6 front-panel connections. The specification sheet below separates every USB speed and connector type.

Display connectivity includes HDMI 2.1, DisplayPort 1.4. These motherboard outputs require a processor with integrated graphics.

Audio

The audio score is 40.0. This is a standard onboard solution using Realtek® ALC897 Codec. It covers normal gaming and communication; demanding headphones or production work still benefit from an external interface.

Buying verdict

Overall quality is 40.40, a basic but usable result for office, media, and budget gaming systems.

At the recorded Amazon price, the quality-to-price score is 55.2—a balanced value for its feature class.

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 Pro B650M-B
Chipset / socket
B650M / AM5
Form factor
Micro-ATX
Launch price
—
Amazon price
$139
Availability
Unavailable
Price updated
6 months, 1 week ago

VRM

CPU phases
7 (55 A)
Power design
7+2+1
EPS connector
1

Memory

Type / slots
DDR5 / 2 DIMMs
Max capacity / OC
128 GB / 6800 MT/s
Per DIMM
64 GB
XMP / EXPO
Yes

PCIe

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

Storage

M.2 slots
1
M.2 lengths
2280, 2260
SATA ports
4

Display outputs

HDMI
Yes · 2.1 · 4K 60Hz
DisplayPort
Yes · 1.4 · 4K 60Hz
USB-C DisplayPort
No

USB

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

Networking

Ethernet
Realtek® 8125BG 2.5G
LAN ports
1
LAN speed
2500 Mbps
Wi-Fi
Not included
Bluetooth
No

Audio

Chipset
Realtek® ALC897 Codec
Analog jacks
—
Gold-plated jacks
No
Optical S/PDIF
No
Spatial audio
No

Additional information

Memory notes
Supports un-buffered memory. Supports AMD EXPO. Max overclocking frequency depends on DIMM configuration: 1DPC 1R up to 6800+ MHz, 1DPC 2R up to 6000+ MHz. The base JEDEC speed is 4800 MHz.
Display notes
Also includes 1x VGA port with a maximum resolution of 2048x1536 50Hz, 2048x1280 60Hz, or 1920x1200 60Hz. Video outputs are available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.
Expansion notes
PCI_E1 Gen PCIe 4.0 supports up to x16 (From CPU). It supports x16 for Ryzen™ 9000/ 7000 Series processors, x8 for Ryzen™ 8700/ 8600/ 8400 Series processors, and x4 for Ryzen™ 8500/ 8300 Series processors. PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset).
M.2_1
4.0 4 · 2280, 2260 · From CPU
Audio notes
7.1-Channel High Definition Audio
Fan / RGB headers
1 CPU · — OPT · — AIO · 2 chassis · 1 ARGB · 1 RGB
Other headers
Front audio · System panel · TPM
Dimensions
24.4 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

AM5 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 AM5 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

2x DDR5, Maximum Memory Capacity 128GB
Memory Support DDR5 6800+(OC)/ 6600(OC)/ 6400(OC)/ 6200(OC)/ 6000(OC)/ 5800(OC)/ 5600(OC)/ 5400(OC)/ 5200(OC)/ 5000(OC)/ 4800(JEDEC) MHz
Max. overclocking frequency:
• 1DPC 1R Max speed up to 6800+ MHz
• 1DPC 2R Max speed up to 6000+ MHz

Supports Dual-Channel mode
Supports non-ECC, un-buffered memory
Supports AMD EXPO

Graphics

1x HDMI™ Support HDMITM 2.1, maximum resolution of 4K 60Hz* 1x DisplayPort Supports DP1.4, maximum resolution of 4K 60Hz* *Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.
Support HDMITM 2.1, maximum resolution of 4K 60Hz*
1x VGA
Support VGA, maximum resolution of 2048x1536 50Hz, 2048x1280 60Hz, 1920x1200 60Hz
*Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.

Expansion slots

1x PCI-E x16 slot
• Supports x16 (For Ryzen™ 9000/ 7000 Series processors)
• Supports x8 (For Ryzen™ 8700/ 8600/ 8400 Series processors)
• Supports x4 (For Ryzen™ 8500/ 8300 Series processors)
1x PCI-E x1 slot
PCI_E1 Gen PCIe 4.0 supports up to x16 (From CPU)
PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset)

Storage

1x M.2
M.2_1 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
4x SATA 6G

USB

2x USB 2.0 (Rear)
4x USB 2.0 (Front)
4x USB 5Gbps Type A (Rear)
2x USB 5Gbps Type A (Front)

Internal I/O

1x Power Connector(ATX_PWR)
1x Power Connector(CPU_PWR)
1x CPU Fan
2x System Fan
2x Front Panel (JFP)
1x Chassis Intrusion (JCI)
1x Front Audio (JAUD)
1x Com Port (JCOM)
1x Addressable V2 RGB LED connector (JARGB_V2)
1x RGB LED connector(JRGB)
1x TPM pin header(Support TPM 2.0)
4x USB 2.0 ports
2x USB 5Gbps Type A ports

Rear I/O

HDMI™
VGA
Keyboard/Mouse
USB 3.2 Gen 1 5Gbps (Type-A)
LAN port
Audio connectors
USB 2.0

Audio

Realtek® ALC897 Codec
7.1-Channel High Definition Audio

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