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ASRock B650M Pro RS motherboard
ASRock

ASRock B650M Pro RS

Chipset:
B650
Socket:
AM5
Form Factor:
Micro-ATX
M.2 Slots:
3x M.2

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Manufacturer: ASRock Last updated: 2026-10-08

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ASRock B650M Pro RS Review

The B650M Pro RS is ASRock's value micro-ATX board on the older B650 chipset, still widely available and popular for budget Ryzen 9000/8000/7000 builds that don't need a PCIe 5.0 GPU slot.

Power delivery uses an 8+2+1 phase design with Dr.MOS stages, matching ASRock's B850M Pro-A WiFi in raw phase count and sufficient for any non-X3D Ryzen 9000 chip at stock settings. Four DDR5 DIMM slots (ECC and non-ECC, unbuffered) support up to 256GB total capacity, with overclocking rated up to 7200+ MT/s. Expansion includes a PCIe 4.0 x16 slot running at full x16 and a PCIe 3.0 x16 slot running at x4. Storage covers three M.2 slots: one PCIe 5.0 x4 "Blazing M.2," one PCIe 4.0 x4 "Hyper M.2," and one PCIe 4.0 x2 slot. A 2.5 Gigabit LAN controller using a Realtek RTL8125BG chip handles wired networking; WiFi is supported via an optional M.2 Key E WiFi/BT module rather than being built in. Audio uses a Realtek ALC897 codec with Nahimic audio enhancement. Against the Gigabyte B850M AORUS STEALTH in this catalog, the B650M Pro RS sits a chipset generation behind and lacks a PCIe 5.0 GPU slot, but its lower typical price makes it the pick for builders assembling the most affordable current-generation AM5 system possible.

Power Delivery and VRM Design

Power delivery uses an 8+2+1 phase design with Dr.MOS stages, matching ASRock's B850M Pro-A WiFi in raw phase count and sufficient for any non-X3D Ryzen 9000 chip at stock settings.

Memory Support

Four DDR5 DIMM slots (ECC and non-ECC, unbuffered) support up to 256GB total capacity, with overclocking rated up to 7200+ MT/s.

Expansion and Storage

Expansion includes a PCIe 4.0 x16 slot running at full x16 and a PCIe 3.0 x16 slot running at x4. Storage covers three M.2 slots: one PCIe 5.0 x4 "Blazing M.2," one PCIe 4.0 x4 "Hyper M.2," and one PCIe 4.0 x2 slot.

Connectivity

A 2.5 Gigabit LAN controller using a Realtek RTL8125BG chip handles wired networking; WiFi is supported via an optional M.2 Key E WiFi/BT module rather than being built in. Audio uses a Realtek ALC897 codec with Nahimic audio enhancement.

Comparison to Alternatives

Against the Gigabyte B850M AORUS STEALTH in this catalog, the B650M Pro RS sits a chipset generation behind and lacks a PCIe 5.0 GPU slot, but its lower typical price makes it the pick for builders assembling the most affordable current-generation AM5 system possible.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Best for

  • The most affordable current-generation AM5 builds
  • Builders who don't need a PCIe 5.0 GPU slot or built-in WiFi

Not for

  • Anyone who wants Wi-Fi included out of the box
  • Builds that want a PCIe 5.0 x16 GPU slot

Specifications

What these specs mean

Identity

Model NumberB650M Pro RS
Form FactorMicro-ATX

Platform and CPU compatibility

PlatformAMD
SocketAM5
ChipsetB650
Newest CPU Family SupportedRyzen 9000
Oldest CPU Family SupportedRyzen 7000
CPU Overclocking SupportedYes

Memory

Memory TypeDDR5
Memory Slots4
Max Memory256 GB
Max Memory Capacity256 GB
Max Rated Memory Speed7200 MT/s
ECC Memory SupportUnbuffered ECC

Expansion & Connectivity

M.2 Slots3
PCIe 5.0 SupportYes
Wi-Fi OnboardNo

Physical fit

Board Width244 mm

M.2 storage

M.2 Slots Onboard3
M.2 PCIe 5.0 Slots1
M.2 PCIe 4.0 Slots2

Other storage

SATA Ports4

PCIe expansion

PCIe x16 Slots2
Primary Graphics Slot GenPCIe 4.0

Rear USB

Rear USB 10Gbps Ports2
Rear USB 5Gbps Ports2
Rear USB 2.0 Ports4

Power delivery

Vcore Power Stages8
Power Stage Current Rating50 A
EPS 12V ConfigurationOne 8-pin

Network and audio

Max Ethernet Speed2.5 Gbps
Ethernet Port Count1
Wi-Fi StandardNone
Audio CodecRealtek ALC897, Nahimic enhancement

FAQs

What are the key specifications of the ASRock B650M Pro RS (AM5/AMD B650/mATX/8+2+1 Phase Dr.MOS VRM/Three M.2 Slots)?

Key specs for the ASRock B650M Pro RS: Chipset B650, Socket AM5, Socket Type AM5, Max Memory 256 GB, Max Memory Capacity 256 GB, Form Factor Micro-ATX.

Will the ASRock B650M Pro RS (AM5/AMD B650/mATX/8+2+1 Phase Dr.MOS VRM/Three M.2 Slots) work with my current setup?

The ASRock B650M Pro RS (AM5/AMD B650/mATX/8+2+1 Phase Dr.MOS VRM/Three M.2 Slots) lists Socket is AM5. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the ASRock B650M Pro RS (AM5/AMD B650/mATX/8+2+1 Phase Dr.MOS VRM/Three M.2 Slots) best suited to?

Best suited to: The most affordable current-generation AM5 builds; Builders who don't need a PCIe 5.0 GPU slot or built-in WiFi.

What are the drawbacks of the ASRock B650M Pro RS (AM5/AMD B650/mATX/8+2+1 Phase Dr.MOS VRM/Three M.2 Slots)?

Not the best fit for: Anyone who wants Wi-Fi included out of the box; Builds that want a PCIe 5.0 x16 GPU slot.

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