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ASUS ROG STRIX X870-I Mini-ITX motherboard with Ryzen 9 9900X CPU installed, black heatsinks and integrated I/O cover

ASUS

ASUS ROG STRIX X870-I GAMING WIFI + Ryzen 9 9900X combo

SKU CH-2FGP-DA7ST

A Mini-ITX motherboard and 12-core Ryzen 9 9900X CPU combo with DDR5 support to 96 GB, PCIe 5.0 M.2, WiFi 7 and a 10+2+1 110 A power stage for compact high-performance builds

  • ChipsetAMD X870
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardDDR5 4400
  • Maximum Memory Supported96GB
  • ECC SupportedNon-ECC
  • Buffer SupportedUn-buffered

model ROG STRIX X870-I GAMING WIFI

+CPU +R9 9900X

  • Ready for AI workloads with AM5 socket supporting Ryzen 7000, 8000, 9000 series
  • 12 cores and 24 threads on Zen 5 architecture reach 5.6 GHz max boost
  • 10+2+1 power stages rated 110A each with ProCool II connectors for multi-core stability
  • DDR5 memory up to 96 GB across four 288-pin slots with AEMP support
  • WiFi 7 2x2 on 2.4, 5, 6 GHz bands with 320 MHz bandwidth up to 6.5 Gbps

Compact AM5 combo for small-form-factor builders

This bundle pairs the ROG STRIX X870-I GAMING WIFI motherboard with the Ryzen 9 9900X processor. The board uses the AMD X870 chipset on a Mini ITX layout, while the CPU delivers 12 cores and 24 threads based on the Zen 5 architecture. It targets enthusiasts who want high core counts in a compact chassis.

AI-driven tuning and high-speed memory

ASUS AI Overclocking, AI Cooling II, AI Networking and AEMP firmware features adjust frequencies, fan curves and memory timings automatically. The board supports DDR5 up to 8400 MT/s when overclocked with Ryzen 9000 series processors across its two DIMM slots. These tools reduce manual configuration time for advanced AI workloads.

Robust 110 A power stages and dual M.2 cooling

A 10+2+1 power design rated at 110 A per stage uses ProCool II connectors, alloy chokes and durable capacitors. Massive heatsinks with an integrated I/O cover and high-conductivity thermal pads cover both the PCIe 5.0 M.2 slot and the PCIe 4.0 M.2 slot. An L-shaped backplate adds structural rigidity for daily transport.

Highlights

  • Ready for AI workloads with AM5 socket supporting Ryzen 7000, 8000, 9000 series
  • 12 cores and 24 threads on Zen 5 architecture reach 5.6 GHz max boost
  • 10+2+1 power stages rated 110A each with ProCool II connectors for multi-core stability
  • DDR5 memory up to 96 GB across four 288-pin slots with AEMP support
  • WiFi 7 2x2 on 2.4, 5, 6 GHz bands with 320 MHz bandwidth up to 6.5 Gbps

Specifications

BrandASUS
ModelROG STRIX X870-I GAMING WIFI+R9 9900X
ChipsetAMD X870
Number of Memory Slots4x288pin (DDR5)
Memory StandardDDR5 4400
Maximum Memory Supported96GB
ECC SupportedNon-ECC
Buffer SupportedUn-buffered
Memory Feature2 x DIMM slots, max. 96GB, DDR5
Supports up to
8400+MT/s(OC) with Ryzen™ 9000 Series Processors,
8600+MT/s(OC) with Ryzen™ 8000 Series Processors,
8000+MT/s(OC) with Ryzen™ 7000 Series Processors,
ECC and Non-ECC Un-buffered DIMM*"
Dual channel memory architecture
Supports AMD Extended Profiles for Overclocking (EXPO)
ASUS Enhanced Memory Profile (AEMP)
* Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory
configuration, for more information please refer to CPU/Memory Support list under the Support tab of product information site
PCI Express 5.0 x16AMD Ryzen 9000 & 7000 Series Desktop Processors
1 x PCIe 5.0 x16 slot
PCI Express 4.0 x16AMD Ryzen 8000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)
Serial ATA (SATA)2 x SATA 6Gb/s
M.2AMD 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 RAID* AMD RAIDXpert2 Technology supports both PCIe RAID 0/1/10 and SATA RAID 0/1
Max LAN Speed2.5Gbps
Wireless LANWi-Fi 7*
2x2 Wi-Fi 7 (802.11be)
Supports 2.4/5/6GHz frequency band**
Support Wi-Fi 7 320MHz bandwidth, up to 6.5Gbpstransfer rate.
*Wi-Fi features may vary depending on the operating system
For Windows 11, Wi-Fi 7 will require24H2 or later version for full functions, Windows 11 21H2/22H2/23H2 only support Wi-Fi 6E.
For Windows 10, please note that no driver is available, refer to the Wi-Fi chipset vendor's website for details.
** Wi-Fi 6GHz frequency band and bandwidth regulatory may vary between countries.
BluetoothBluetooth v5.4***
*** The Bluetooth version may vary, please refer to the Wi-Fi module manufacturer's website for the latest specifications.
USB 3.0USB4
Onboard USBUSB
1 x USB 10Gbps connector (supports USB Type-C® )
1 x USB 5Gbps header support(s) 2
additional USB 5Gbps ports
Other ConnectorsFan and Cooling Related
1 x 4-pin CPU Fan header(s)
1 x 4-pin AIO Pump header(s)
1 x 4-pin Chassis Fan header(s)
Power Related
1 x 24-pin Main Power connector
1 x 8-pin +12V CPU Power connector
Storage Related
2 x M.2 slots (Key M)
Miscellaneous
2 x Addressable Gen 2 headers
1 x 2-pin Power Button header
1 x Thermal Sensor header
2 x USB Type-C® connectors to install ROG FPS card
ROG FPS card
2 x SATA 6Gb/s ports
1 x CPU Over Voltage jumper
1 x Front Panel header
1 x Alteration PCIe Mode switch
2 x USB 2.0 headers support 3
additional USB 2.0 ports
Form FactorMini ITX
Dimensions (W x L)6.7" x 6.7"
BIOS Feature256 Mb Flash ROM, UEFI AMI BIOS
SoftwareROG Exclusive Software
- ROG CPU-Z
- Dolby Atmos
ASUS Exclusive Software
Armoury Crate
- AIDA64 (60 days free trial)
- Aura Creator
- Aura Sync
- Fan Xpert 4 (with AI Cooling II)
- GameFirst
- HWiNFO
- Power Saving
ASUS Driver Hub
ASUS GlideX
Adobe Creative Cloud (Free Trial)
Norton 360 for Gamers (60 Days Free Trial)
WinRAR (40 Days Free Trial)
UEFI BIOS
AI Overclocking Guide
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
- ASUS UEFI
BIOS EZ Mode
- ASUS
MyHotkey
FlexKey
Dynamic OC Switcher
FeaturesASUS Q-Design
- M.2 Q-Latch
- PCIe Slot Q-Release Slim (with PCIe SafeSlot)
- Q-Antenna
- Q-Code
- Q-DIMM
- Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green])
- Q-Slot
ASUS Thermal Solution
- M.2 heatsink
- Aluminum backplate
ASUS EZ DIY
- BIOS FlashBack™ button
- BIOS FlashBack™ LED
- Clear CMOS button
- ProCool II
- Pre-mounted I/O shield
- SafeSlot
- SafeDIMM
Aura Sync
- Addressable Gen 2 header(s)
ROG STRIX HIVE II
1 x USB Type-C® connects to motherboard
2 x USB 10Gbps port ( 1 x Type-A + 1 x USB Type-C®)
1 x Headphone jack with mic in
1 x Power button
1 x
Package Contents1 x AMD Ryzen 9 9900X CPU
Cables
1 x Panel cable
1 x ROG USB2.0 splitter cable
2 x SATA 6Gb/s cables
ROG FPS Card
1 x ROG FPS Card
ROG STRIX HIVE II
1 x ROG STRIX HIVE II
1 x USB Type-C® power connection cable
Miscellaneous
1 x ASUS WiFi Q-Antenna
1 x Cable ties package
1 x M.2 Q-Latch package(s)
1 x ROG key chain
1 x ROG Strix stickers
1 x M.2 rubber package(s)
Documentation
1 x Quick start guide

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Questions about this item

Will the 10+2+1 power stage rated for 110A per stage need component replacement under continuous load?

The power stage uses high-quality alloy chokes and durable capacitors designed for multi-core processors; no user-serviceable parts are expected to need replacement under normal operation

What thermal limit appears first when the Ryzen 9 9900X runs all 12 cores at 5.6 GHz boost?

The massive heatsinks with integrated I/O cover, high-conductivity thermal pads and L-shaped backplate are engineered to handle the 110A per stage power delivery before thermal throttling engages

How loud and hot does the board get when the Wi-Fi 7 2x2 320MHz radio and both M.2 slots run 24/7?

AI Cooling II manages fan headers dynamically while the integrated heatsink and backplate dissipate heat from the Wi-Fi 7 module and dual M.2 drives to keep noise and temperature in check

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