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Compact Mini-ITX motherboard with dark heatsinks, integrated I/O shield, and Ryzen 9 9950X3D CPU installed

ASUS

ASUS ROG Strix B850-I Gaming WiFi & Ryzen 9 9950X3D AMD motherboard combo

SKU CH-3HAW-2M5AB

Mini-ITX AM5 combo pairs a 16-core Ryzen 9 9950X3D with a B850 board offering 10+2+1 70A power stages, dual PCIe 5.0 M.2 slots, WiFi 7, 2.5Gbps LAN and 96GB DDR5 capacity

  • 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 9 9950X3D

  • Ready for Ryzen 9000, 8000 and 7000 series on AM5 socket
  • 10+2+1 power stages rated 70A each with ProCool connectors
  • Dual DDR5 slots up to 96GB with EXPO and AEMP support
  • Two PCIe 5.0 M.2 slots, one heatsinked, for fast storage
  • WiFi 7, Bluetooth 5.4 and 2.5Gbps LAN for high-speed networking

Combo for compact AM5 builds

This bundle pairs the ROG Strix B850-I Gaming WiFi motherboard with the Ryzen 9 9950X3D processor. It targets enthusiasts building small-form-factor systems that demand high core counts and large cache for gaming and creative workloads. The Mini-ITX board delivers a full feature set in a 170 mm square footprint.

DIY-friendly Mini-ITX installation

A pre-mounted I/O shield, Q-Release Slim for the PCIe slot, Q-Slide and Q-Latch for both M.2 drives, and a Q-Antenna make assembly straightforward in tight cases. The most common issue is cooler clearance; the integrated VRM heatsink and I/O cover restrict the height of air coolers and the thickness of AIO cold plates, so verify dimensions before purchasing.

128 MB L3 cache decides fit

The 9950X3D provides 128 MB of L3 cache, the defining spec for latency-sensitive gaming performance. If your workload benefits from that cache capacity, this combo is the correct choice; if not, a standard Ryzen 9000 series CPU on the same board will cost less.

How it compares

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

Price $1,111.99
Pricier than about 90% of the 1,906 comparable items (median $224.49).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameASUS
Model nameROG STRIX B850-I GAMING WIFI+R9 9950 × 3D
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 the included Ryzen 9 9950X3D fit the AM5 socket on this motherboard without a BIOS update?

Yes, the board ships with an AM5 socket and the combo pairs the 9950X3D with the B850 chipset so the CPU is supported out of the box.

How much DDR5 memory can I install and what speed profiles are supported?

The board has two 288-pin slots for up to 96 GB of dual-channel DDR5 and supports both AMD EXPO and ASUS AEMP profiles for automatic overclocking.

Which M.2 slots run at PCIe 5.0 speeds and do they both fit full-length 2280 drives?

Both M.2 slots accept 2242, 2260 and 2280 drives and each operates at PCIe 5.0 x4 with Ryzen 9000 or 7000 series processors.

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