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ASUS ROG Crosshair X870E Extreme E-ATX motherboard with Ryzen 9 9900X3D CPU installed

ASUS

ASUS ROG CROSSHAIR X870E EXTREME AMD motherboard with Ryzen 9 9900X3D CPU

SKU CH-F5G1-6K39Q

AM5 motherboard with 20+2+2 power stages, DDR5 to 8200 MT/s, five M.2 slots, 5G and 10G LAN, Wi-Fi 7, USB4 Type-C and 5-inch LCD.

  • CPU Socket TypeAM5
  • CPU TypeSupports up to 8200+MT/s(OC) with Ryzen 9000 Series Processo
  • ChipsetAMD X870E
  • Number of Memory Slots4x288pin (DDR5)
  • Maximum Memory Supported256GB
  • Channel SupportedDual Channel

model ROG CROSSHAIR X870E EXTREME

+CPU +Ryzen 9 9900X3D

  • AI-ready platform with Ryzen 9000, 8000 and 7000 support
  • 12-core CPU with 128MB L3 cache and Radeon graphics
  • 20+2+2 power stages rated 110A for stable overclocking
  • DDR5 up to 8200 MT/s OC across 256GB capacity
  • 5Gb and 10Gb LAN plus Wi-Fi 7 for fast networking

AM5 Socket Combo with Ryzen 9 9900X3D

This bundle pairs the ASUS ROG CROSSHAIR X870E EXTREME motherboard with an AMD Ryzen 9 9900X3D processor in the AM5 socket. The board delivers 20+2+2 power stages rated at 110A each for stable current delivery. It supports DDR5 memory up to 256GB across four 288-pin slots with dual-channel architecture and AEMP profiles. The CPU provides 128MB L3 cache and 12MB L2 cache on a TSMC 4nm Zen 5 design with a 120W TDP and integrated Radeon graphics.

Built for AI Workloads and Extreme Overclocking

The platform targets users who need AI-ready compute, high-speed networking and maximum overclocking headroom. AI Overclocking, AI Cooling II and AI Networking II automate tuning, while Dynamic OC Switcher, Core Flex and Asynchronous Clock give manual control. Dual 5G and 10G LAN plus Wi-Fi 7 handle heavy data movement. Builders who only need mainstream gaming performance or a smaller form factor should consider more focused boards.

PCIe 5.0 Storage and Connectivity Headroom

Five M.2 slots provide three PCIe 5.0 x4 and two PCIe 4.0 x4 interfaces, all with substantial heatsinks including a 3D VC design on the primary slot. Two PCIe 5.0 x16 slots operate at x16 or x8/x8 modes for multi-GPU or accelerator setups. Four SATA 6Gb/s ports and USB4 Type-C round out peripheral support. The 10Gbps LAN ceiling and 256GB memory limit define the practical boundaries for storage arrays and large-model workloads.

Highlights

  • AI-ready platform with Ryzen 9000, 8000 and 7000 support
  • 12-core CPU with 128MB L3 cache and Radeon graphics
  • 20+2+2 power stages rated 110A for stable overclocking
  • DDR5 up to 8200 MT/s OC across 256GB capacity
  • 5Gb and 10Gb LAN plus Wi-Fi 7 for fast networking

Specifications

BrandASUS
SeriesROG
ModelROG CROSSHAIR X870E EXTREME+(R9 9900X3D)
CPU Socket TypeAM5
CPU TypeSupports up to
8200+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
ChipsetAMD X870E
Number of Memory Slots4x288pin (DDR5)
Maximum Memory Supported256GB
Channel SupportedDual Channel
ECC SupportedNon-ECC
Memory FeatureASUS Enhanced Memory Profile (AEMP)
NitroPath DRAM Technology
PCI Express 5.0 x16AMD Ryzen 9000 & 7000 Series Desktop Processors*
2 x PCIe 5.0 x16 slots with Q-Release Slim (supports x16 or x8/x8** or x8/x4/x4 modes***)
** When you use both PCIEX16(G5)_1 and PCIEX16(G5)_2, PCIEX16(G5)_1 and PCIEX16(G5)_2 will run x8.
***When M.2_3 is enabled, PCIEX16(G5)_1 will run x8, and PCIEX16(G5)_2 will run x4.
**** When M.2_2 and M.2_3 are enabled simultaneously, PCIEX16(G5)_2 will be disabled.
PCI Express 4.0 x16AMD Ryzen 8700 & 8600 & 8400 Series Desktop Processors*
2 x PCIe 4.0 x16 slots with Q-Release Slim (only supports PCIEx16(G5)_1 & total bandwidth for x8, PCIEx16(G5)_2 will be disabled)
AMD Ryzen 8500 & 8300 Series Desktop Processors*
2 x PCIe 4.0 x16 slots with Q-Release Slim (only supports PCIEx16(G5)_1 & total bandwidth for x4, PCIEx16(G5)_2 will be disabled)
Serial ATA (SATA)4 x SATA 6Gb/s
M.2AMD Ryzen 9000 & 7000 Series Desktop Processors
M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 5.0 x4 mode)
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)*
M.2_3 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 5.0 x4 mode)**
AMD Ryzen 8000 Series Desktop Processors
M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 mode)
M.2_2 slot (Key M), type 2242/2260/2280 (Not supports)
M.2_3 slot (Key M), type 2242/2260/2280/22110 (Not supports)
AMD X870E Chipset
DIMM.2_1 slot (Key M) via ROG Q-DIMM.2, type 2230/2242/2260/2280/22110 (su
SATA RAID0/1/5/10
Audio ChannelsAudio Features
- SupremeFX Shielding Technology
- ESS ES9219 QUAD DAC
- LED-illuminated audio jacks
- Rear optical S/PDIF out port
- Premium audio capacitors
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
** The LINE OUT port on the rear panel does not support spatial audio. If you wish to use spatial audio, make sure to connect your audio output device to the audio jack on the front panel of your chassis or use a USB interface audio device.
LAN Chipset1 x Realtek 5Gb Ethernet
Second LAN Chipset1 x Marvell AQtion 10Gb Ethernet
Max LAN Speed10Gbps
Wireless LANWi-Fi 802.11 be
BluetoothBluetooth 5.4
Back I/O Ports2 x USB4 (40Gbps) ports (2 x USB Type-C)
10 x USB 10Gbps ports (8 x Type-A + 2 x USB Type-C)
1 x HDMI port
1 x Wi-Fi Module
1 x Realtek 5Gb Ethernet port
1 x Marvell AQtion 10Gb Ethernet port
2 x LED-illuminated audio jacks
1 x Optical S/PDIF out port
1 x BIOS FlashBack button
1 x Clear CMOS button
Onboard USB1 x USB 20Gbps connector (supports USB Type-C)
1 x USB 10Gbps connector (supports USB Type-C)
2 x USB 5Gbps headers support 4 additional USB 5Gbps ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports
Other ConnectorsFan and Cooling related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
2 x 4-pin Chassis Fan headers
2 x 4-pin Radiator Fan headers
2 x W_PUMP+ headers
1 x VRM Heatsink Fan header
Miscellaneous
1 x 6-pin ARGB Gen 2 header to support 2 x ARGB Gen 2 headers
2 x Addressable Gen 2 header
1 x Alteration PCIe mode switch
2 x BCLK button
1 x BIOS Switch
1 x FlexKey button
1 x Front Panel Audio header (F_AUDIO)
1 x LN2 Mode jumper
12 x ProbeIt Measurement Points
1 x ReTry button
2 x RSVD switchs
1 x RSVD header
1 x Safe Boot button
1 x Slow Mode switch
1 x Start button
1 x 10-1 pin Sy
Form FactorExtended ATX
Dimensions (W x L)12.0" x 10.9"
Power Pin1 x 24-pin Main Power connector
2 x 8-pin +12V CPU Power connector
1 x 8-pin PCIe Power connector
BIOS Feature2 x 256 Mb Flash ROM, UEFI AMI BIOS
SoftwareROG Exclusive Software
- ROG CPU-Z
- Dolby Atmos
- Internet Security (1-year full version)
ASUS Exclusive Software
Armoury Crate
- AIDA64 Extreme (1 year full version)
- Aura Creator
- Aura Sync
- Fan Xpert 4 (with AI Cooling II)
- GameFirst
- HWiNFO
- Power Saving
- LCD Display
ASUS AI Advisor
ASUS DriverHub
Turbo Vcore
ASUS GlideX
USB Wattage Watcher
WinRAR (40 Days Free Trial)
Adobe Creative Cloud (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
Windows 11Supported
FeaturesExtreme OC Kit
- FlexKey button
- LN2 Mode
- ProbeIt
- ReTry button
- Safe boot button
- Start button
- Slow Mode
Extreme Engine Digi+
- 10K Black Metallic Capacitors
- MicroFine Alloy Choke
ASUS Q-Design
- M.2 Q-Latch
- M.2 Q-Release
- M.2 Q-Slide
- Q-Release Slim (with PCIe SafeSlot)
- Q-Antenna
- Q-Code
- Q-Connector
- Q-Dashboard
- Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green])
- Q-Slot
- Q-DIMM.2
ASUS Thermal Solution
- Fan bracket
- M.2 heatsink backplate
- M.2 heatsink
- Metal backplate
- VRM heatsink design
- 3D VC M.2 Heatsink
ASUS EZ DIY
- Backpla

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Questions about this item

What DDR5 memory speed can I reach with the Ryzen 9 9900X3D installed?

The board supports up to 8200+ MT/s when overclocked with Ryzen 9000 series processors like the included 9900X3D.

Will my existing PCIe 4.0 graphics card work in the primary x16 slot?

Yes, the PCIe 5.0 x16 slot is backward compatible and will run a PCIe 4.0 card at its native speed.

How do I confirm the 3D V-Cache on the 9900X3D is active after assembly?

Check the L3 cache reading in BIOS or CPU-Z; it should show 128 MB for the 9900X3D.

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