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Compact square motherboard in dark grey with large heatsinks and pre-mounted I/O shield

ASUS

ASUS ROG Strix B850-I Gaming WiFi AMD motherboard & Ryzen 9 9950X CPU Combo

SKU CH-5WBT-CHZNN

A compact AM5 motherboard paired with a 16-core Ryzen 9 9950X CPU, offering 10+2+1 power stages, dual DDR5 slots up to 96 GB, two PCIe 5.0 M.2 sockets, 2.5 Gb LAN and WiFi 7

  • 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 9950X

  • 16 cores and 32 threads deliver heavy multi‑tasking power
  • 7 GHz max boost enables high single‑thread speed
  • 10+2+1 power stages rated to 70 A keep voltage stable under load
  • dual PCIe 5.0 M.2 slots give fast storage expansion
  • WiFi 7 plus 2.5 Gb Ethernet provide low‑latency networking

AM5 Mini-ITX combo for high-core workloads

This bundle pairs the ROG Strix B850-I Gaming WiFi motherboard with the Ryzen 9 9950X processor. The board uses the AMD B850 chipset on a Mini-ITX form factor with an AM5 socket. The CPU delivers 16 cores and 32 threads based on Zen 5 architecture with a 5.7 GHz max boost and 64 MB L3 cache. It targets builders who need maximum multi-threaded performance in a compact chassis.

AI tuning and DIY aids simplify assembly

ASUS AI Advisor, AI Overclocking, AI Networking II and AEMP automate frequency, memory and network optimisation. The board includes PCIe Slot Q-Release Slim, M.2 Q-Slide, M.2 Q-Latch, Q-Antenna, Q-Dashboard, Q-LED, BIOS FlashBack, Clear CMOS and FlexKey buttons plus a pre-mounted I/O shield. These features reduce build friction and make post-build adjustments straightforward.

10+2+1 power stages rated to 70 A per stage

The VRM uses a 10+2+1 phase design with ProCool connectors, each stage rated for up to 70 A. This headroom supports the 9950X at stock or overclocked settings without thermal throttling. If your workload demands sustained all-core frequencies, this power delivery is the specification that determines stability.

How it compares

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

Price $994.99
Pricier than about 88% 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 9950X
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

5 more in the same range

Questions about this item

Will the Ryzen 9 9950X fit in the AM5 socket on this board?

Yes. The motherboard uses the AM5 socket and the combo includes a Ryzen 9 9950X that is built for that socket.

How much DDR5 memory can I install and how many slots are there?

The board has two 288-pin DDR5 slots and supports up to 96 GB in dual-channel mode.

What M.2 drive sizes do the two slots accept?

Both M.2 slots accept 2242, 2260 and 2280 form factors and each runs at PCIe 5.0 x4 with Ryzen 9000 or 7000 series CPUs.

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