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Compact Mini-ITX motherboard in dark metallic finish with large heatsinks and integrated I/O cover, paired with a Ryzen 9 9900X CPU

ASUS

ASUS FF4D516G6000HC38ADC01 AMD motherboard ROG STRIX X870-I GAMING WIFI with Ryzen 9 9900X

SKU CH-1J81-DE7B6 MPN FF4D516G6000HC38ADC01

Mini-ITX AM5 board paired with a 12-core Ryzen 9 9900X, DDR5 to 8400 MT/s, Wi-Fi 7 and PCIe 5.0 M.2

  • 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 + Ryzen 9 9900X

  • AMD Ryzen 9 9900X delivers 12 cores and 24 threads for heavy multitasking
  • X870 chipset supports DDR5 up to 8400 MT/s when overclocked with Ryzen 9000
  • 10+2+1 power stages rated at 110 A each feed the CPU cleanly
  • WiFi 7 with 320 MHz channels reaches 6.5 Gbps peak wireless speed
  • PCIe 5.0 M.2 slot plus PCIe 4.0 M.2 slot both include substantial heatsinks

Ready for Advanced AI PCs

This motherboard and CPU combo pairs the ROG STRIX X870-I GAMING WIFI with a Ryzen 9 9900X. The board uses the AMD X870 chipset on an AM5 socket. It supports Ryzen 7000, 8000 and 9000 series processors. The CPU delivers 12 cores and 24 threads with a 5.6 GHz max boost.

Mini ITX builders and AI workloads

The Mini ITX form factor suits compact systems that need strong multi-threaded performance. Four DDR5 slots support up to 96 GB of memory. Builders who need multiple full-length expansion cards or more than two M.2 drives should look at larger boards.

Sustained load behaviour

A 10+2+1 power solution rated for 110 A per stage feeds the CPU through ProCool II connectors. Massive heatsinks with an integrated I/O cover and high-conductivity thermal pads dissipate heat. An L-shaped backplate adds structural rigidity and thermal mass for extended workloads.

Highlights

  • AMD Ryzen 9 9900X delivers 12 cores and 24 threads for heavy multitasking
  • X870 chipset supports DDR5 up to 8400 MT/s when overclocked with Ryzen 9000
  • 10+2+1 power stages rated at 110 A each feed the CPU cleanly
  • WiFi 7 with 320 MHz channels reaches 6.5 Gbps peak wireless speed
  • PCIe 5.0 M.2 slot plus PCIe 4.0 M.2 slot both include substantial heatsinks

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
1 x Shin-Etsu X-23-7921-5 (1.8g)
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

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

What DDR5 memory kit speed do I need to match the CPU's native 5600 MT/s support?

The Ryzen 9 9900X officially supports DDR5-5600; the board can run faster with overclocking but 5600 MT/s works without any tuning.

Will my existing PCIe 4.0 graphics card run at full speed in the x16 slot with this CPU?

With the Ryzen 9000 series processor the primary slot operates at PCIe 5.0 x16 and is backward compatible, so a PCIe 4.0 card will run at its native x16 speed.

How can I confirm the Wi-Fi 7 radio is active after I build the system?

In Windows 11 open Settings > Network & internet > Wi-Fi; the connection properties will show 802.11be and a 6 GHz band if the 2x2 Wi-Fi 7 adapter is working.

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