Up until very recently, if you wanted the latest and greatest motherboard for an AMD CPU you were forced to buy a motherboard with an X570 chipset, that is until AMD released the B550 to the masses. Asus has some of the largest selection of motherboards and we have the minuscule ASUS ROG Strix B550-I motherboard on the test bench. The ROG Strix B550-I is a mini ITX motherboard which is great for small builds. Over the last few generations, ITX boards have been able to meet the performance of their full-size counterparts and the Strix B550-I aims to keep this trend going. ITX motherboards do make some sacrifices for size. For example, you only get one PCIe slot and two vs. four memory slots. As far as the chipset, the main difference between the X570 and B550 is the PCIe generation and the configuration. 1st off, the B550 uses PCIe 3.0 for the CPU to chipset link whereas the X570 uses PCIe 4.0. With the B550, you still get 16 lanes of PCIe Gen4 for graphics and one 4-lane PCIe 4.0 NVME slot and a ton of PCIe Gen3 lanes that the motherboard manufactures can arrange how they see fit. Also with the B550, you gain the support for dual GPUs which is something the B450 lacked. Overall, the B550 should be cheaper than the X570 boards. While there are trade-offs in I/O and the bells and whistles available on the board, is there a trade-off for performance as well? From what I know from the reviews of the X570 and B450 boards, performance differences should be minimal. I can understand AMD not wanting to give everything away on the B550 as far as available features because why would you buy an X570 board? However, I can’t see AMD penalizing you for buying a less expensive board to pair with their latest and greatest CPU. To me, that just doesn’t make sense.
Packaging
The box features the ROG (Republic Of Gamers) logo dressed in RGB neon colors behind the graphic of the front side of the motherboard on the front of the box. Clearly, you can see what chipset and what CPU generation this motherboard is for. On the back of the box, Asus goes into a lot more detail on some of the specifications such as I/O, SATA port count, as well as some of the features of the Strix B550-I
Inside, you’ll find the motherboard wrapped in an anti-static bag. There are two compartments to the box. The top compartment holds the motherboard and the bottom compartment holds the accessories.
The accessory bundle for the Strix B550-I includes a rear I/O shield, SATA cables, zip ties, a USB c to 3.5mm headphone jack, an M.2 bracket, and screws, and Wifi antenna. Also included are a sticker sheet, thank you card, manual, and a DVD. Honestly, I’d rather see USB drives included for drivers rather than DVDs. Not many people that I know still have an optical drive in their PC.
Specifications
| CPU | AMD AM4 Socket 3rd Gen AMD Ryzen™ Processors * Refer to www.asus.com for CPU support list |
| Chipset | AMD B550 |
| Memory | 5100(O.C)/5000(O.C)/4800(O.C.)/4600(O.C)/4400(O.C)/4266(O.C.)/ 4133(O.C.)/4000(O.C.)/3800(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/ 3200/3000/2933/2800/2666/2400/2133 MHz Un-buffered Memory * Dual Channel Memory Architecture OptiMem II ECC Memory (ECC mode) support varies by CPU. |
| Graphic | 1 x HDMI 2.1(4K@60HZ) * 1 x DisplayPort 1.4 * *Graphics specifications may vary between CPU types. |
| Expansion Slots | 1 x PCIe 4.0 x16 (x16 mode) |
| Storage | Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports 3rd Gen AMD Ryzen™ Processors : 1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280 (PCIe 4.0 x4 and SATA modes) storage devices support AMD B550 Chipset : 1 x M.2_2 socket 3, with M Key, Type 2242/2260/2280 (PCIe 3.0 x4 and SATA modes) storage devices support 4 x SATA 6Gb/s port(s), Support Raid 0, 1, 10 |
| LAN | Intel® I225-V 2.5Gb Ethernet ASUS LANGuard |
| Wireless Data Network | Intel® Wi-Fi 6 AX200 2×2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax) support 1024QAM/OFDMA/MU-MIMO Supports dual band frequency 2.4/5 GHz Supports channel bandwidth: HT20/HT40/HT80/HT160 |
| Bluetooth | Bluetooth v5.1* *BT 5.1 function will be ready in Windows 10 build 19041 or later. |
| Audio | SupremeFX 7.1 Surround Sound High Definition Audio CODEC S1220A – Dual OP Amplifiers – Impedance sense for front and rear headphone outputs – Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking – High quality 120 dB SNR stereo playback output and 113 dB SNR recording input – Supports up to 32-Bit/192kHz playback * Audio Feature : – Rear audio USB Type-C® port – LED-illuminated design – Audio Shielding – Premium Japanese audio capacitors |
| USB Ports | Rear USB Port ( Total 6 ) 4 x USB 3.2 Gen 2 port(s)(1 x USB Type-C® +3 x Type-A) 1 x USB 2.0 port(s) 1 x USB 2.0 port(s)(1 x audio USB Type-C® ) Front USB Port ( Total 5 ) 1 x USB 3.2 Gen 2 front-panel connector port(s)(1 x USB Type-C®) 2 x USB 3.2 Gen 1 port(s) 2 x USB 2.0 port(s) |
| Software Features | ROG Exclusive Software – RAMCache III – ROG CPU-Z – GameFirst VI – Sonic Studio III + Sonic Studio Virtual Mixer – Sonic Radar III – DTS® Sound Unbound – Overwolf – Anti-virus software ASUS Exclusive Software Features Armoury Crate – Aura Creator – Aura Sync -AI Noise Cancelling Microphone |
| ASUS Special Features | Aura Sync – Standard RGB header(s) – Addressable Gen 2 RGB header(s) ASUS Q-Design – ASUS Q-CODE – ASUS Q-DIMM – ASUS Q-LED (DRAM [yellow],CPU [red], VGA [white], Boot Device [yellow green) – ASUS Q-Slot ASUS Thermal Solution – Aluminum M.2 heatsink ASUS EZ DIY -BIOS Flashback™ button -BIOS FlashBack™ LED -Clear CMOS header -Procool -Pre-mounted I/O shield – SafeSlot Rear audio USB Type-C® connector |
| Back I/O Ports | 1 x Intel® I225-V 2.5Gb Ethernet 1 x DisplayPort 1 x HDMI 4 x USB 3.2 Gen 2 (1 x USB Type-C®+3 x Type-A) 2 x USB 2.0 (one port can be switched to USB BIOS FlashBack™ 1 for audio USB Type-C®) 1 x BIOS FlashBack™ Button(s) 1 x ASUS Wi-Fi Module 3 x LED-illuminated audio jacks |
| Internal I/O Ports | 1 x CPU Fan connector(s) 1 x Chassis Fan connector(s) 1 x AIO_PUMP connector 1 x Aura RGB Strip Header(s) 1 x Addressable Gen 2 header(s) 1 x USB 3.2 Gen 1 front panel TypeC™ connector 1 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s) 1 x USB 2.0 connector(s) support(s) additional 2 USB 2.0 port(s) 2 x M.2 Socket 3 with M Key design, type 2242/2260/2280 storage devices support (Supports both SATA & PCIe SSD) 4 x SATA 6Gb/s connector(s) 1 x 24-pin EATX Power connector(s) 1 x 8-pin ATX 12V Power connector(s) 1 x Front panel audio connector(s) (AAFP) 1 x Thermal sensor connector(s) 1 x Clear CMOS jumper(s) 1 x System panel connector 1 x Speaker connector 1 x VRM_HS_FAN Header |
| Accessories | User’s manual I/O Shield 4 x SATA 6Gb/s cable(s) 2 x M.2 Screw Package 1 x Supporting DVD 1 x ROG Strix stickers 1 x M.2 bracket 1 x Cable ties pack(s) 1 x Wi-Fi Antenna(s) 1 x Extension cable for Addressable LED 1 x Panel cable 1 x ROG Thank you card 1 x ROG audio USB Type-C® cable |
| BIOS | 256 Mb Flash ROM, UEFI AMI BIOS |
| Manageability | WOL by PME, PXE |
| Operating System | Windows® 10 64-bit |
| Form Factor | Mini ITX Form Factor 6.7 inch x 6.7 inch ( 17 cm x 17 cm ) |
