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ASRock B650M Pro RS motherboard
ASRock

ASRock B650M Pro RS

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

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Manufacturer: ASRock Last updated: September 11, 2026

ASRock B650M Pro RS (AM5/AMD B650/mATX/8+2+1 Phase Dr.MOS VRM/Three M.2 Slots) 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 Sibling Products

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.

Specifications

Platform and CPU compatibility

PlatformAMD
SocketAM5
SocketAMD Ryzen 9000 / 8000 / 7000 series
ChipsetB650

Platform

Socket TypeAM5
Form FactorMicro-ATX

Memory

Memory TypeDDR5
Memory Slots4
Max Memory256 GB
Memory Type4x DDR5 DIMM, up to 256GB, up to 7200+ MT/s (OC)

Expansion & Connectivity

M.2 Slots3
PCIe 5.0 SupportNo
Wi-Fi OnboardNo

Network and audio

Audio CodecRealtek ALC897, Nahimic enhancement
ModelB650M Pro RS
VRM8+2+1 phase, Dr.MOS
ExpansionPCIe 4.0 x16 + PCIe 3.0 x16 (x4)
ConnectivityM.2 Key E for optional WiFi module
NetworkingRealtek RTL8125BG 2.5G LAN (WiFi optional)
Special Features3x M.2 (1x Gen5, 1x Gen4, 1x Gen4 x2)

Expert Review

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

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)?

The ASRock B650M Pro RS (AM5/AMD B650/mATX/8+2+1 Phase Dr.MOS VRM/Three M.2 Slots) is a motherboard from ASRock. Key specs: Socket AM5, Chipset B650, VRM 8+2+1 phase, Dr.MOS, Memory 4x DDR5 DIMM, up to 256GB, up to 7200+ MT/s (OC), Expansion PCIe 4.0 x16 + PCIe 3.0 x16 (x4).

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?

It suits 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)?

It is a poor 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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