PRO B550M-P
The MSI PRO B550M-P is a Micro ATX AM4 motherboard on the B550 chipset. It supports DDR4 memory up to 4,400 MT/s and 2 M.2 slots. Full specs, power delivery, and current prices are below.
Prices update regularly and may differ at the retailer. This page contains affiliate links.
Prices include 19% VAT. Shipping is shown under each price, and offers are listed by price plus shipping.
MaxMyBuild scores
How we score →How well the PRO B550M-P is equipped for gaming and for productivity, scored 0–100 from its specs. Scores are fit-for-purpose: a capable board can top the gaming score without being the most expensive. Each factor is judged against what AM4 processors can use, so the score compares this board with the others you could buy for the same chip.
Weighs CPU power delivery, memory speed support, the GPU PCIe slot, Wi-Fi version, and M.2 storage — the things that actually matter for a gaming build.
Rewards fast, plentiful M.2 storage and USB I/O, PCIe expansion, memory capacity and slots — what matters for content creation and heavy multitasking.
MSI does not publish this board’s power-stage layout, so the CPU power factor in both scores uses a typical figure for B550 boards rather than a measured one for this model.
CPU power
115 W
Limited · 0.8x
Wired for about 115 W, roughly 81% of the 142 W that the top Ryzen 9 chips pull. Pair it with a mid-range processor rather than a flagship. Its power-stage (VRM) layout is not published, so this is a deliberately cautious figure and the board may be built for more. It is a rating of what the board is built to deliver, not a measurement, so treat it as headroom rather than a guarantee.
Specifications
Platform
- Chipset
- B550
- Socket
- AM4
- Form factor
- Micro ATX
Memory
- Type
- DDR4
- Slots
- 4
- Max speed
- 4,400 MT/s
- Max capacity
- 128 GB
- Channels
- 2-channel
- ECC / memory
- UDIMM
Power & VRM
- CPU power
- 115 W
- EPS power
- 8
Storage & Expansion
- M.2 slots
- 2
- M.2 layout
- 1× PCIe 4.0 ×4, 1× PCIe 3.0 ×4
- SATA ports
- 4 SATA3
- PCIe ×16 slots
- 1× PCIe 4.0 ×16
- Other PCIe slots
- 2× PCIe 3.0 ×1
Ethernet & Wi-Fi
- Realtek RTL8111H
- 1 GbE
- Ethernet ports
- 1
- Wi-Fi
- None
USB & I/O
- Rear USB-A
- 2× USB 2.0, 4× 5 Gbps
- Front USB-C
- 1× 5Gbps
- Front USB 3 headers
- 1
- Front USB 2 headers
- 2
Audio & Video
- Audio codec
- Realtek ALC897
- Audio jacks
- 3
- HDMI
- HDMI 2.1
- DisplayPort
- DP 1.4
- USB-C video
- None
Cooling, RGB & Design
- Fan headers
- 3
- 12V RGB headers
- 2
- 5V ARGB headers
- 2
Onboard & Diagnostics
- Diagnostics
- Debug LEDs
- TPM header
- Yes
Compare the PRO B550M-P against every other board on the motherboard comparison table. Not sure it fits your chip? The socket compatibility guide explains AM4 pairings.
Where to buy the PRO B550M-P
Every in-stock retailer offer we track, cheapest first.
| Retailer | Availability | Price | Updated | Buy |
|---|---|---|---|---|
| notebooksbilliger | In stock | €90.81 Free shipping |  |
The PRO B550M-P starts from €90.81 across 1 retailer (No onboard Wi-Fi). Prices update daily from live stock. Prices include 19% VAT. Shipping is shown under each price, and offers are listed by price plus shipping.
Which CPUs fit the PRO B550M-P?
Compare all CPUs →In-stock AM4 processors this board can run, socket-matched and within its 115 W power budget, ranked by gaming value (performance per euro).
| Processor | Cores | Gaming | From | |
|---|---|---|---|---|
| Ryzen 3 4100 AMD | 4/8 | 30.5 | €61.05 Free shipping | |
| Ryzen 5 5500 AMD | 6/12 | 38.7 | €90.62 Free shipping | |
| Ryzen 5 5600 AMD | 6/12 | 52.0 | €124.88 Free shipping | |
| Ryzen 5 5500F AMD | 6/12 | 41.5 | €99.90 Free shipping | |
| Ryzen 3 3200G AMD | 4/4 | 25.1 | €61.96 + €4.99 shipping | |
| Ryzen 5 5600XT AMD | 6/12 | 53.7 | €135.51 Free shipping | |
| Ryzen 7 5700 AMD | 8/16 | 52.0 | €159.70 + €4.99 shipping | |
| Ryzen 7 3700X AMD | 8/16 | 41.5 | €129.66 + €4.99 shipping |
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