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ASRock B650M Pro RS vs MSI PRO A620M-B: Comparison
What is the difference between ASRock B650M Pro RS and MSI PRO A620M-B?
The gap that matters here is memory slots: ASRock B650M Pro RS 4 against MSI PRO A620M-B 2, which puts ASRock B650M Pro RS 50% ahead. ASRock B650M Pro RS also leads on m.2 slots, 3 on the ASRock B650M Pro RS versus 1 on the MSI PRO A620M-B. ASRock B650M Pro RS also leads on max memory, 256 GB on the ASRock B650M Pro RS versus 128 GB on the MSI PRO A620M-B. They differ on board width too, 244 mm on the ASRock B650M Pro RS versus 215 mm on the MSI PRO A620M-B.
Who each one is for
The ASRock B650M Pro RS suits the most affordable current-generation AM5 builds, though it is not built for anyone who wants Wi-Fi included out of the box and builds that want a PCIe 5.0 x16 GPU slot. It also earns its place with builders who don't need a PCIe 5.0 GPU slot or built-in WiFi. it is not the pick for anyone needing factory Wi-Fi or a second M.2 slot. The same goes for new Ryzen 9000 builds wanting the most current A620 board in MSI's lineup. It is not the one for buyers who already own the A620M-E and don't need the marginal CPU support update.
Where the two are identical
The common ground is wider than the gap: socket, form factor, platform, newest cpu family supported and oldest cpu family supported are identical here. They match on 6 further specifications as well.
Frequently asked questions
Do the ASRock B650M Pro RS and MSI PRO A620M-B differ on chipset?
Yes. Chipset reads B650 on the ASRock B650M Pro RS versus A620 on the MSI PRO A620M-B.
Is the Wi-Fi Onboard the same on the ASRock B650M Pro RS and MSI PRO A620M-B?
It is. Both are listed at No, so it is not a reason to pick one over the other.
Specs and benchmarks
Platform
- ASRock B650M Pro RS
- AMD
- MSI PRO A620M-B
- AMD
Model Number
- ASRock B650M Pro RS
- B650M Pro RS
- MSI PRO A620M-B
- PRO A620M-B
Socket
- ASRock B650M Pro RS
- AMD Ryzen 9000 / 8000 / 7000 series
- MSI PRO A620M-B
- AMD Ryzen 9000 / 8000 / 7000 series
Form Factor
- ASRock B650M Pro RS
- Micro-ATX
- MSI PRO A620M-B
- Micro-ATX
Chipset
- ASRock B650M Pro RS
- B650
- MSI PRO A620M-B
- A620
Newest CPU Family Supported
- ASRock B650M Pro RS
- Ryzen 9000
- MSI PRO A620M-B
- Ryzen 9000
Memory Type
- ASRock B650M Pro RS
- 4x DDR5 DIMM, up to 256GB, dual-channel, DDR5-7200+ (OC), XMP/EXPOBest
- MSI PRO A620M-B
- 2x DDR5, dual-channel, up to 128GB, 6800+ MT/s (OC)
Oldest CPU Family Supported
- ASRock B650M Pro RS
- Ryzen 7000
- MSI PRO A620M-B
- Ryzen 7000
Memory Slots
- ASRock B650M Pro RS
- 4Best
- MSI PRO A620M-B
- 2-50%
Max Memory
- ASRock B650M Pro RS
- 256 GBBest
- MSI PRO A620M-B
- 128 GB-50%
Board Width
- ASRock B650M Pro RS
- 244 mm
- MSI PRO A620M-B
- 215 mm
M.2 Slots
- ASRock B650M Pro RS
- 3Best
- MSI PRO A620M-B
- 1-67%
PCIe 5.0 Support
- ASRock B650M Pro RS
- Yes
- MSI PRO A620M-B
- No
Wi-Fi Onboard
- ASRock B650M Pro RS
- No
- MSI PRO A620M-B
- No
Max Memory Capacity
- ASRock B650M Pro RS
- 256 GBBest
- MSI PRO A620M-B
- 128 GB
Max Rated Memory Speed
- ASRock B650M Pro RS
- 7200 MT/sBest
- MSI PRO A620M-B
- 6800 MT/s
ECC Memory Support
- ASRock B650M Pro RS
- Unbuffered ECC
- MSI PRO A620M-B
- None
M.2 Slots Onboard
- ASRock B650M Pro RS
- 3
- MSI PRO A620M-B
- 1
M.2 PCIe 4.0 Slots
- ASRock B650M Pro RS
- 2
- MSI PRO A620M-B
- 1
SATA Ports
- ASRock B650M Pro RS
- 4
- MSI PRO A620M-B
- 4
PCIe x16 Slots
- ASRock B650M Pro RS
- 2
- MSI PRO A620M-B
- 1
Primary Graphics Slot Gen
- ASRock B650M Pro RS
- PCIe 4.0
- MSI PRO A620M-B
- PCIe 4.0
Rear USB 5Gbps Ports
- ASRock B650M Pro RS
- 2
- MSI PRO A620M-B
- 4
Rear USB 2.0 Ports
- ASRock B650M Pro RS
- 4
- MSI PRO A620M-B
- 2
Vcore Power Stages
- ASRock B650M Pro RS
- 8
- MSI PRO A620M-B
- Not officially disclosed by MSI
Max Ethernet Speed
- ASRock B650M Pro RS
- 2.5 Gbps
- MSI PRO A620M-B
- 2.5 Gbps
Ethernet Port Count
- ASRock B650M Pro RS
- 1
- MSI PRO A620M-B
- 1
Wi-Fi Standard
- ASRock B650M Pro RS
- None
- MSI PRO A620M-B
- None
Audio Codec
- ASRock B650M Pro RS
- Realtek ALC897, Nahimic enhancement
- MSI PRO A620M-B
- Realtek ALC897, 7.1-channel
Expansion
- ASRock B650M Pro RS
- 1x PCIe 4.0 x16, 1x PCIe 3.0 x16 (x4 mode); 1x M.2 PCIe 5.0 x4, 1x M.2 PCIe 4.0 x4, 1x M.2 PCIe 4.0 x2; 4x SATA III; 1x M.2 Key-E (Wi-Fi optional)
- MSI PRO A620M-B
- 1x PCIe 4.0 x16 (CPU) + 1x PCIe 3.0 x1 (chipset)
Connectivity
- ASRock B650M Pro RS
- 1x Rear USB 3.2 Gen2 Type-C (10Gbps), 1x Rear USB 3.2 Gen2 Type-A (10Gbps), 2x Rear USB 3.2 Gen1 (5Gbps), 4x Rear USB 2.0; M.2 Key E for optional WiFi module
- MSI PRO A620M-B
- Rear 4x USB 5Gbps Type-A, 2x USB 2.0, HDMI 2.1, VGA
Networking
- ASRock B650M Pro RS
- Realtek RTL8125BG 2.5G LAN (WiFi optional via M.2 Key E)
- MSI PRO A620M-B
- Realtek RTL8125BG 2.5G LAN, no Wi-Fi
Special Features
- ASRock B650M Pro RS
- 3x M.2 (1x Gen5, 1x Gen4, 1x Gen4 x2)
- MSI PRO A620M-B
- 2.5G LAN, DDR5-6800+ OC memory support
Which one should you pick?
Choose ASRock B650M Pro RS if you want the higher memory slots (4 vs 2), the higher max memory (256 GB vs 128 GB) and the higher M.2 slots (3 vs 1).
Choose MSI PRO A620M-B if you already have it on hand or find it at a lower price.
Price comparison
| Retailer | ASRock B650M Pro RS | MSI PRO A620M-B |
|---|---|---|
| Newegg | View on Newegg |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.