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

ASUS

ASUS ROG STRIX X870-I GAMING WIFI + Ryzen 9 9900X3D AMD motherboard CPU combo

SKU CH-TF4C-M7WJC

Mini-ITX AM5 motherboard paired with a 12-core Ryzen 9 9900X3D, 128 MB L3 cache, DDR5 to 8400 MT/s, PCIe 5.0 M.2, Wi-Fi 7 and 2.5 Gbps LAN

  • ChipsetAMD X870
  • Form factorMini ITX
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryDDR5 4400
  • Max supported RAM96 GB
  • ECC supportNon-ECC

Model ROG STRIX X870-I GAMING WIFI

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CPU + Ryzen 9 9900X3D

  • Ready for advanced AI workloads with powerful connectivity
  • 10+2+1 power stages rated 110A each for stable multi-core performance
  • Dynamic OC Switcher and Core Flex simplify overclocking control
  • DDR5 memory overclocked to 8400 MT/s with Ryzen 9000 series
  • Wi-Fi 7 supports 320 MHz bandwidth up to 6.5 Gbps

Mini ITX AI-Ready Platform

The ROG STRIX X870-I GAMING WIFI motherboard paired with the Ryzen 9 9900X3D processor delivers a compact AM5 platform built for advanced AI workloads and high-performance gaming. The combination targets enthusiasts who need maximum compute density in a small-form-factor build.

128MB 3D V-Cache Decides Fit

The CPU features 128MB of L3 cache using 3D V-Cache technology, a spec that directly determines suitability for latency-sensitive tasks such as competitive gaming and large-language-model inference. Buyers should match this cache size to workload demands before purchasing.

110A Power Stages Sustain Load

A 10+2+1 power solution rated at 110A per stage with ProCool II connectors maintains stable delivery to the 120W processor during extended all-core workloads. Massive heatsinks, an integrated I/O cover and an L-shaped backplate dissipate heat without thermal throttling.

How it compares

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

Price $1,347.99
Pricier than about 92% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Model nameROG STRIX X870-I GAMING WIFI+R9 9900 × 3D
Processor
ChipsetAMD X870
Memory
Memory slot count4 × 288pin (DDR5)
Supported memoryDDR5 4400
Max supported RAM96 GB
ECC supportNon-ECC
BufferingUn-buffered
Storage
SATA ports2 x SATA 6Gb/s
M.2 slotsAMD Ryzen 9000 & 7000 Series Desktop Processors*
M.2_1 slot (Key M), type 2280(supports PCIe 5.0 x4 mode)
AMD Ryzen 8000 Series Desktop Processors*
M.2_1 slot (Key M), type 2280(supports PCIe 4.0 x4 mode)
AMD X870 Chipset
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4)
*** Install ROG FPS Card to support 2 x SATA 6Gb/s ports.
SATA and RAID support* AMD RAIDXpert2 Technology supports both PCIe RAID 0/1/10 and SATA RAID 0/1
Connectivity
Maximum network speed2.5 Gbit/s
Bluetooth supportv5.4***
*** The Bluetooth version may vary, please refer to the Wi-Fi module manufacturer's website for the latest specifications.
Ports & slots
PCIe 5.0 x16 slotsAMD Ryzen 9000 & 7000 Series Desktop Processors
1 x PCIe 5.0 x16 slot
PCIe 4.0 x16 slotsAMD Ryzen 8000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)
USB 3.0 portsUSB4
Onboard USB headersUSB
1 x USB 10 Gbit/s connector (supports USB Type-C® )
1 x USB 5 Gbit/s header support(s) 2
additional USB 5 Gbit/s ports
Size & build
Form factorMini ITX
Width and length6.7 in × 6.7 in
More details
BIOS256 Mb Flash ROM, UEFI AMI BIOS

Other versions of this model

5 more in the same range

Questions about this item

What does the 120W TDP of the Ryzen 9 9900X3D mean for my cooling choice?

The 120W base power rating requires a capable air cooler or AIO liquid cooler that can handle sustained loads; the board includes a 4-pin CPU fan header and a dedicated 4-pin AIO pump header for direct pump control.

What does the PCIe 5.0 x16 slot cap at when paired with the included Ryzen 9 9900X3D?

With the Ryzen 9000 series processor installed, the single x16 slot runs at full PCIe 5.0 x16 bandwidth for graphics cards or high-speed add-in cards.

What clearance does the L-shaped backplate and massive heatsink need around the Mini-ITX board?

The integrated I/O cover and L-shaped backplate extend to the board edges, so ensure your Mini-ITX case allows clearance for tall memory modules and the rear I/O shield without interference.

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