
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
Where to buy
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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 meanIdentity
| Model Number | B650M Pro RS |
|---|---|
| Form Factor | Micro-ATX |
Platform and CPU compatibility
| Platform | AMD |
|---|---|
| Socket | AM5 |
| Chipset | B650 |
| Newest CPU Family Supported | Ryzen 9000 |
| Oldest CPU Family Supported | Ryzen 7000 |
| CPU Overclocking Supported | Yes |
Memory
| Memory Type | DDR5 |
|---|---|
| Memory Slots | 4 |
| Max Memory | 256 GB |
| Max Memory Capacity | 256 GB |
| Max Rated Memory Speed | 7200 MT/s |
| ECC Memory Support | Unbuffered ECC |
Expansion & Connectivity
| M.2 Slots | 3 |
|---|---|
| PCIe 5.0 Support | Yes |
| Wi-Fi Onboard | No |
Physical fit
| Board Width | 244 mm |
|---|
M.2 storage
| M.2 Slots Onboard | 3 |
|---|---|
| M.2 PCIe 5.0 Slots | 1 |
| M.2 PCIe 4.0 Slots | 2 |
Other storage
| SATA Ports | 4 |
|---|
PCIe expansion
| PCIe x16 Slots | 2 |
|---|---|
| Primary Graphics Slot Gen | PCIe 4.0 |
Rear USB
| Rear USB 10Gbps Ports | 2 |
|---|---|
| Rear USB 5Gbps Ports | 2 |
| Rear USB 2.0 Ports | 4 |
Power delivery
| Vcore Power Stages | 8 |
|---|---|
| Power Stage Current Rating | 50 A |
| EPS 12V Configuration | One 8-pin |
Network and audio
| Max Ethernet Speed | 2.5 Gbps |
|---|---|
| Ethernet Port Count | 1 |
| Wi-Fi Standard | None |
| Audio Codec | Realtek 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.
Compare and read more
- ASRock B650M Pro RS (AM5/AMD B650/mATX/8+2+1 Phase Dr.MOS VRM/Three M.2 Slots) vs Gigabyte A620M S2H (AM5/AMD A620/mATX/Q-Flash Plus/Entry-Level AM5)
- ASRock B650M Pro RS (AM5/AMD B650/mATX/8+2+1 Phase Dr.MOS VRM/Three M.2 Slots) vs Gigabyte B850M AORUS STEALTH (AM5/AMD B850/Micro-ATX/Reverse-Connector Design/DDR5 OC/PCIe 5.0/WiFi 7)
- ASRock B650M Pro RS (AM5/AMD B650/mATX/8+2+1 Phase Dr.MOS VRM/Three M.2 Slots) vs ASUS Prime A520M-K (AM4/AMD A520/mATX/Budget/PCIe 3.0)
- ASRock B650M Pro RS (AM5/AMD B650/mATX/8+2+1 Phase Dr.MOS VRM/Three M.2 Slots) vs ASUS Prime A620M-K (AM5/AMD A620/mATX/ASUS's Most Affordable AM5 Board)
- ASRock B650M Pro RS (AM5/AMD B650/mATX/8+2+1 Phase Dr.MOS VRM/Three M.2 Slots) vs ASUS Prime B650M-A WiFi II (AM5/AMD B650/mATX/Two M.2 Slots/Wi-Fi 6)
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