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Compact Mini-ITX motherboard with dark heatsinks and integrated I/O cover

ASUS

ASUS ROG STRIX B850-I GAMING WIFI AMD motherboard

SKU CH-YGNR-T2BQZ MPN ROG STRIX B850-I GAMING WIFI

Mini-ITX AMD B850 board for Ryzen 7000, 8000 and 9000 CPUs with DDR5 up to 96 GB, dual PCIe 5.0 M.2 slots, 2.5 Gb Ethernet and WiFi 7

  • ProcessorRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
  • ChipsetAMD B850
  • Form factorMini ITX
  • CPU socketAM5
  • Memory slot count2 × 288pin (DDR5)
  • Supported memoryDDR5 4400 / DDR5 4800 / DDR5 5000 / DDR5 5200 / DDR5 5400 /

Model ROG STRIX B850-I GAMING WIFI

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  • Ready for Ryzen 9000, 8000 and 7000 series CPUs via AM5 socket
  • 10+2+1 power stages rated to 70A with ProCool connectors for stable delivery
  • Two PCIe 5.0 M.2 slots, one heatsink-cooled, for high-speed storage
  • Onboard WiFi 7 and Intel 2.5 Gb Ethernet for fast networking
  • DIY-friendly Q-Release, Q-Slide, Q-Latch, Q-Antenna and pre-mounted I/O shield

AM5 Mini-ITX board for Ryzen 7000, 8000, 9000

The ROG STRIX B850-I GAMING WIFI fits AMD Ryzen 7000, 8000 and 9000 series processors into a Mini-ITX footprint. Two DDR5 slots support up to 96 GB in dual-channel mode with EXPO and AEMP profiles. A 10+2+1 power stage design rated for 70 A per stage feeds the CPU through ProCool connectors. One PCIe 5.0 x16 SafeSlot and two PCIe 5.0 M.2 slots provide high-speed expansion.

Sustained load behaviour with 70 A power stages

The 10+2+1 stage VRM delivers up to 70 A per stage, keeping voltage stable during extended workloads. Large heatsinks with integrated I/O cover and high-conductivity thermal pads dissipate heat from the power circuitry and the primary M.2 slot. Active cooling on the first M.2 drive prevents throttling during long transfers. The second M.2 slot adds capacity without a dedicated heatsink. Realtek ALC4080 audio and Intel 2.5 Gb Ethernet maintain consistent throughput.

DIY friendly features and common install issues

Pre-mounted I/O shield, PCIe Slot Q-Release Slim, M.2 Q-Slide and Q-Latch simplify component installation. Q-Antenna eases WiFi 7 antenna attachment. BIOS FlashBack and Clear CMOS buttons allow firmware recovery without a CPU installed. FlexKey button remaps the front-panel reset switch. Builders should verify case clearance for the tall VRM heatsinks and ensure the 20 Gbps USB Type-C front-panel header matches the chassis.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $304.99
Pricier than about 56% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Model nameROG STRIX B850-I GAMING WIFI
Part number90MB1K30-M0AAY0
Processor
ProcessorRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
CPU socketAM5
ChipsetAMD B850
Memory
Memory slot count2 × 288pin (DDR5)
Supported memoryDDR5 4400 / DDR5 4800 / DDR5 5000 / DDR5 5200 / DDR5 5400 / DDR5 5600 / DDR5 5800 / DDR5 6000 / DDR5 6200 / DDR5 6400 / DDR5 6600 / DDR5 6666 / DDR5 6800 / DDR5 7000 / DDR5 7200 / DDR5 7400 / DDR5 7600 / DDR5 7800 / DDR5 7900 / DDR5 7950 / DDR5 8000 / DDR5 8200 / DDR5 8266 / DDR5 8333 / DDR5 8400
Max supported RAM96 GB
Memory channelsDual Channel
Memory profilesAMD EXPO
ECC supportYes
BufferingUn-buffered
Storage
SATA ports2 x SATA 6Gb/s
M.2 slotsAMD Ryzen 9000 & 7000 Series Desktop Processors*
M.2_1 slot (Key M), type02242/2260/2280 (supports PCIe 5.0 x4 mode)
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)
AMD Ryzen 8000 Series Desktop Processors*
M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
SATA and RAID supportAMD RAIDXpert2 Technology supports both PCIe RAID 0/1/10 and SATA RAID 0/1
Audio & video
Audio chipRealtek ALC4080
Sound channelsROG SupremeFX 7.1 Surround Sound High Definition Audio CODEC ALC4080*
- Impedance sense for front and rear headphone outputs
- Supports: Jack-detection, Multi-streaming, Front Panel MIC Jack-retasking
- High quality 120 dB SNR stereo playback output and 110 dB SNR recording input
- Supports up to 32-Bit/384 kHz playback on front panel
Audio Features
- SupremeFX Shielding Technology
- Savitech SV3H712 AMP
- Rear optical S/PDIF out port
- Premium audio capacitors
- Unique de-pop circuit
Connectivity
Maximum network speed2.5 Gbit/s
Wi-Fi standardWi-Fi 802.11 be
Bluetooth support5.4
Ports & slots
PCIe 5.0 x16 slotsAMD Ryzen 9000 & 7000 Series Desktop Processors
1 x PCIe 5.0 x16 slot(s)
PCIe 4.0 x16 slotsAMD Ryzen 8000 Series Desktop Processors
1 x PCIe 4.0 x16 slot(s)
Power
Power connectors1 × 24-pin Main Power connector
1 × 8-pin +12 V CPU Power connector
Size & build
Form factorMini ITX
Width and length6.7 in × 6.7 in
Shipping weight1.36 kg
Package size229 × 191 × 102 mm
Compatibility
Windows 11 supportWindows 11, Windows 10 64-bit
Windows 11 (22H2 later)
More details
BIOS256 Mb Flash ROM, UEFI AMI BIOS // UEFI AMI BIOS(text-based)

Other versions of this model

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Questions about this item

How much power can the 10+2+1 stage VRM deliver continuously during all-day loads?

The 10+2+1 power solution is rated for up to 70A per stage, giving the AM5 socket ample headroom for sustained Ryzen workloads without throttling.

Which DDR5 memory kits and CPU cooler clearances are required to populate both 288-pin slots?

The board supports DDR5 up to 96GB in dual-channel via AMD EXPO or AEMP profiles; the massive integrated heatsinks cover the VRM and I/O, so low-profile memory is recommended for clearance.

Will a PCIe 4.0 graphics card and SATA SSDs run at full speed alongside the two PCIe 5.0 M.2 slots?

Yes — the primary x16 slot runs at PCIe 5.0 with Ryzen 9000 or 7000 CPUs and falls back to 4.0 with Ryzen 8000, while two SATA 6Gb/s ports and both M.2 slots (PCIe 5.0 x4 each) operate independently.

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