B550I Aorus Pro AX
The Gigabyte B550I Aorus Pro AX is a Mini-ITX AM4 motherboard on the B550 chipset. It supports DDR4 memory up to 4,866 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.
MaxMyBuild scores
How we score →How well the B550I Aorus Pro AX 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.
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.
CPU power
273 W
The B550I Aorus Pro AX is wired to feed about 273 W to the processor. The figure comes from its 6+2 power-stage (VRM) layout and 8 EPS connectors. 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
- Mini-ITX
- MSRP
- $180.00
Memory
- Type
- DDR4
- Slots
- 2
- Max speed
- 4,866 MT/s
- Max capacity
- 64 GB
- Channels
- 2-channel
- ECC / memory
- UDIMM
Power & VRM
- CPU power
- 273 W
- Phase config
- 6+2
- VRM stages
- 90A SPS
- EPS power
- 8
Storage & Expansion
- M.2 slots
- 2
- M.2 layout
- 1× PCIe 4.0 ×4, 1× PCIe 3.0 ×4
- M.2 heatsinks
- Slots 1
- SATA ports
- 4 SATA3
- PCIe ×16 slots
- 1× PCIe 4.0 ×16
Ethernet & Wi-Fi
- Realtek RTL8125BG
- 2.5 GbE
- Ethernet ports
- 1
- Wi-Fi
- Wi-Fi 6
USB & I/O
- Rear USB-A
- 4× 5 Gbps, 1× 10 Gbps
- Rear USB-C
- 1× 10 Gbps
- Front USB 3 headers
- 1
- Front USB 2 headers
- 1
Audio & Video
- Audio codec
- Realtek ALC1220 VB
- Audio jacks
- 3
- HDMI
- 2 ports
- DisplayPort
- 1 port
- USB-C video
- None
Cooling, RGB & Design
- Fan headers
- 3
- 12V RGB headers
- 1
- 5V ARGB headers
- 1
- PCB colour
- Black
- Heatsink colour
- Gray
Onboard & Diagnostics
- BIOS Flashback
- Yes (rear)
- TPM header
- Yes
Compare the B550I Aorus Pro AX 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 B550I Aorus Pro AX
Every in-stock retailer offer we track, cheapest first.
| Retailer | Availability | Price | Buy |
|---|---|---|---|
| Newegg | In stock | $275.99 |  |
The B550I Aorus Pro AX starts from $275.99 across 1 retailer (Wi-Fi 6). Prices update daily from live stock.
Which CPUs fit the B550I Aorus Pro AX?
Compare all CPUs →In-stock AM4 processors this board can run, socket-matched and within its 273 W power budget, ranked by gaming value (performance per dollar).
| Processor | Cores | Gaming | From | |
|---|---|---|---|---|
| Ryzen 5 5500 AMD | 6/12 | 38.7 | $84.93 | |
| Ryzen 5 5600 AMD | 6/12 | 52.0 | $140.99 | |
| Ryzen 3 4100 AMD | 4/8 | 30.5 | $91.65 | |
| Ryzen 5 4500 AMD | 6/12 | 33.5 | $104.99 | |
| Ryzen 5 5600X AMD | 6/12 | 53.7 | $171.92 | |
| Ryzen 7 5700 AMD | 8/16 | 52.0 | $172.99 | |
| Ryzen 5 5600XT AMD | 6/12 | 53.7 | $189.99 | |
| Ryzen 7 5700X AMD | 8/16 | 55.3 | $209.00 |
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