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Compact mini ITX motherboard with large heatsinks and pre-mounted I/O shield, paired with a Ryzen 7 9700X processor

ASUS

ASUS ROG Strix B850-I Gaming WiFi AMD motherboard & Ryzen 7 9700X CPU Combo

SKU CH-AD5S-PA563

Mini-ITX AM5 motherboard paired with an 8-core Ryzen 7 9700X CPU, DDR5 up to 96 GB, dual PCIe 5.0 M.2 slots, WiFi 7, 2.5 Gb LAN and 10+2+1 70 A power stages

  • CPU socketAM5
  • ChipsetAMD B850
  • Form factorMini ITX
  • Memory slot count2 × 288pin (DDR5)
  • Max supported RAM96 GB
  • Memory channelsDual Channel

Motherboard ROG STRIX B850-I GAMING WIFI

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CPU + Ryzen 7 9700X

  • Ready for Ryzen 9000, 8000 and 7000 series processors with AM5 socket
  • AI Overclocking, AI Networking II and AEMP simplify setup and boost performance
  • 10+2+1 power stages rated to 70A with ProCool connectors deliver stable power
  • Two PCIe 5.0 M.2 slots, one heatsink-cooled, provide fast storage expansion
  • On-board WiFi 7 and Intel 2.5 Gb Ethernet give high-speed wired and wireless networking

Mini-ITX AM5 combo with Ryzen 7 9700X

This bundle pairs a compact ROG Strix B850-I motherboard with an eight-core Ryzen 7 9700X processor. The board fits small-form-factor cases while keeping the full AM5 feature set. It targets builders who want high single-thread gaming speed without a full-size ATX footprint.

96 GB DDR5 headroom and dual PCIe 5.0 M.2

Two DDR5 slots support up to 96 GB in dual-channel mode, enough for heavy multitasking and content work. EXPO and AEMP profiles simplify memory tuning. Two M.2 sockets both run at PCIe 5.0 x4; the primary slot includes a large heatsink, the second relies on board airflow. SATA RAID 0/1/10 is available for additional arrays.

10+2+1 70 A power stages for eight-core loads

The VRM uses ten core phases plus two VCCGT and one VCCSA stage, each rated to 70 A, fed by ProCool connectors. This design sustains the 9700X at stock and modest PBO settings without throttling. Heavy all-core overclocks will eventually hit thermal limits in a tight Mini-ITX chassis.

How it compares

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

Price $801.99
Pricier than about 78% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Model nameROG STRIX B850-I GAMING WIFI+R7 9700X
Processor
CPU socketAM5
ChipsetAMD B850
Memory
Memory slot count2 × 288pin (DDR5)
Max supported RAM96 GB
Memory channelsDual Channel
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
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

Will my existing DDR5 memory kits work with the 2x288pin slots on this B850 board?

The board has two 288-pin DDR5 slots supporting dual-channel architecture up to 96 GB. It accepts AMD EXPO and ASUS AEMP profiles, so any standard DDR5 DIMM that fits those specifications will operate correctly.

How can I confirm the 10+2+1 power stages and AI Overclocking are functioning after I build the system?

Enter the UEFI and open the AI Overclocking guide; it will display the predicted frequency and voltage for the Ryzen 7 9700X. The Q-Dashboard and Q-LED indicators on the I/O cover also show real-time power-phase activity and boot-status codes.

Does the combo include the CPU cooler, Wi-Fi antennas or any M.2 screws, or must I buy them separately?

The package contains the ROG Strix B850-I motherboard with pre-mounted I/O shield, the Ryzen 7 9700X processor, a Q-Antenna for WiFi 7, M.2 Q-Latch and Q-Slide hardware, plus the usual cables and documentation. A CPU cooler is not included.

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