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Dark ATX motherboard with large heatsinks and CPU installed

ASUS

ASUS ROG Crosshair X870E Dark Hero AMD motherboard & Ryzen 9 9900X3D CPU Combo

SKU CH-7QHA-AB184

AM5 motherboard paired with a 16-core 3D V-Cache CPU, DDR5 support up to 9600 MT/s, dual USB4 and 10 Gb Ethernet

  • CPU Socket TypeAM5
  • ChipsetAMD X870E
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardSupports up to 8600+MT/s(OC)/8200+MT/s(OC) with Ryzen 9000 S
  • Maximum Memory Supported256GB
  • Channel SupportedDual Channel

model ROG CROSSHAIR X870E DARK HERO

+CPU +Ryzen 9 9900X3D

  • AM5 socket supports Ryzen 9000, 8000 and 7000 series processors
  • DDR5 memory scales to 9600 MT/s over four slots with 256 GB maximum capacity
  • 3D vapour-chamber heatsink cools one PCIe 5.0 M.2 slot alongside massive VRM heatsinks linked by an L-shaped heatpipe
  • Dual USB4 Type-C ports deliver 40 Gbps bandwidth alongside two 10 Gbps and one 5 Gbps Ethernet connections
  • 22 power stages rated at 110 A each with ProCool II connectors and MicroFine alloy chokes provide stable overclocking headroom

AM5 socket with Ryzen 9 9900X3D

This bundle pairs the ROG Crosshair X870E Dark Hero motherboard with the Ryzen 9 9900X3D processor on the AM5 platform. It targets builders who want a pre-validated CPU and board combination for high-end desktop workloads. The board delivers four DDR5 slots, five M.2 sockets and dual USB4 ports. The 3D V-Cache CPU excels in gaming and cache-sensitive applications.

Ideal for AI workstations and high-refresh gaming

The combo suits users who need 256 GB memory capacity, 10 Gbps and 5 Gbps Ethernet, Wi-Fi 802.11 be and Bluetooth 5.4 in one package. AI Cache Boost, AI Overclocking and AI Cooling II simplify tuning for machine-learning tasks. Builders who only need PCIe 4.0 storage, slower LAN or fewer USB4 ports should consider less feature-dense platforms.

Dual USB4 40 Gbps Type-C ports

Two rear USB4 ports provide 40 Gbps bandwidth each for external GPUs, high-speed storage or dock chains. This interface count is the deciding factor for creators who move large datasets between devices daily. If your workflow relies on single 10 Gbps or 20 Gbps connections instead, a board with fewer USB4 ports will cost less.

Highlights

  • AM5 socket supports Ryzen 9000, 8000 and 7000 series processors
  • DDR5 memory scales to 9600 MT/s over four slots with 256 GB maximum capacity
  • 3D vapour-chamber heatsink cools one PCIe 5.0 M.2 slot alongside massive VRM heatsinks linked by an L-shaped heatpipe
  • Dual USB4 Type-C ports deliver 40 Gbps bandwidth alongside two 10 Gbps and one 5 Gbps Ethernet connections
  • 22 power stages rated at 110 A each with ProCool II connectors and MicroFine alloy chokes provide stable overclocking headroom

Specifications

BrandASUS
ModelROG CROSSHAIR X870E DARK HERO +(R9 9900X3D)
CPU Socket TypeAM5
ChipsetAMD X870E
Number of Memory Slots4x288pin (DDR5)
Memory StandardSupports up to
8600+MT/s(OC)/8200+MT/s(OC) with Ryzen 9000 Series Processors
9600+MT/s(OC)/9200+MT/s(OC) with Ryzen 8000 Series Processors
8000+MT/s(OC)/8000+MT/s(OC) with Ryzen 7000 Series Processors
Maximum Memory Supported256GB
Channel SupportedDual Channel
ECC SupportedYes
Buffer SupportedUn-buffered
PCI Express 5.0 x16AMD Ryzen 9000 & 7000 Series Desktop Processors
2 x PCIe 5.0 x16 slots (supports x16 or x8/x8 modes)
*When both PCIEX16_1 and PCIEX16_2 are in use, they will each run in x8 mode.
AMD Ryzen 8700 & 8600 & 8400 Series Desktop Processors
2 x PCIe 4.0 x16 slots (Total bandwidth for x8)
AMD Ryzen 8500 & 8300 Series Desktop Processors
2 x PCIe 4.0 x16 slots (Total bandwidth for x4)
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)**
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 (Not supports)
AMD X870E Chipset
M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
M.2_4 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
M.2_5 slot (Key M), type 2230 (supports PCIe 4.0 x2 mode)
*When both PCIEX16_1 a
SATA RAIDAMD RAIDXpert2 Technology
Ryzen 9000 & 8000 & 7000 Series Processors: RAID 0/1/5/10
Audio ChannelsROG SupremeFX 7.1 Surround Sound High Definition Audio CODEC ALC4082*
- 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
- ESS ES9219 QUAD DAC
- Gold-plated 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 au
Max LAN Speed10Gbps + 5Gbps
Wireless LANWi-Fi 802.11 be
BluetoothBluetooth 5.4
Back I/O Ports2 x USB4 (40Gbps) ports (2 x USB Type-C)
9 x USB 10Gbps connector (6 x Type-A + 3 x USB Type-C)
1 x HDMI port
1 x Wi-Fi module
1 x Realtek 10Gb Ethernet port
1 x Realtek 5Gb Ethernet port
2 x Gold-plated audio jacks
1 x Optical S/PDIF out port
1 x BIOS FlashBack button
1 x Clear CMOS button
Onboard USB2 x USB 20Gbps connectors (support USB Type-C)
2 x USB 5Gbps headers support 4 additional USB 5Gbps ports
3 x USB 2.0 headers support 6 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
1 x 4-pin AIO Pump header
4 x 4-pin Chassis Fan headers
1 x W_PUMP+ header
1 x AIO Q-Connector
Storage Related
5 x M.2 slots (Key M)
4 x SATA 6Gb/s ports
Miscellaneous
3 x Addressable Gen2 headers
1 x Alteration PCIe mode switch
1 x FlexKey button
1 x Front Panel Audio header (F_AUDIO)
1 x ReTry button
1 x Start button
1 x 10-1 pin System Panel header
1 x Thermal Sensor header
1 x LN2 Mode jumper
Form FactorATX
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x 24-pin Main Power connector
2 x 8-pin +12V CPU Power connector
1 x 8-pin PCIe Power connector
BIOS Feature64 MB (512Mb)
Flash ROM, UEFI AMI BIOS
SoftwareROG Exclusive Software
- ROG CPU-Z
- Dolby Atmos
- Internet Security (1-year full version)
- Polymo Lighting II
ASUS Exclusive Software
Armoury Crate
- Aura Creator
- Aura Sync
- Fan Xpert 4 (with AI Cooling II)
- GameFirst
- WiFi Q-Antenna
- MLO Wizard
ASUS DriverHub
- ASUS MB Manager
- HWiNFO
- ASUS AI Advisor
- AIDA64 Extreme (1 year full version)
ASUS GlideX
- USB Wattage Watcher
TurboV Core
WinRAR (40 Days Free Trial)
Adobe Creative Cloud (Free Trial)
UEFI BIOS
AI Overclocking Guide
AI Cache Boost
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
- ASUS UEFI BIOS EZ Mode
- A
FeaturesExtreme OC Kit
- FlexKey button
- LN2 Mode
- ReTry button
- Start button
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
- PCIe Slot Q-Release
- Q-Antenna
- Q-Code
- Q-Connector
- Q-Dashboard
- Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green])
- Q-Slot
ASUS Thermal Solution
- Fan bracket
- 3D VC M.2 Heatsink
- M.2 heatsink backplate
- M.2 heatsink
- VRM heatsink design
- Metal backplate
ASUS EZ DIY
- Backplate
- BIOS FlashBack button
- Clear CMOS button
- ProCool II
- Pre-mo
Package ContentsCables
4 x SATA 6Gb/s cables
Additional Cooling Kit
1 x DDR5 fan holder
1 x ROG assistant fan (60mm)
1 x Thermal pad for M.2 22110
Miscellaneous
1 x ASUS WiFi Q-Antenna
1 x Q-connector
1 x M.2 Q-Latch package
3 x M.2 Q-Slide package
5 x M.2 rubber package
1 x ROG stickers
1 x ROG thank you card
1 x ROG Bottle Opener
Documentation
1 x Quick start guide
Shin-Etsu X-23-7868-2D
CPU

Other versions of this model

5 more in the same range

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

Questions about this item

What speed does the USB4 interface on this board reach in practice?

The two USB4 Type-C ports on the rear I/O run at 40Gbps each.

What physical clearance does the 3D VC M.2 heatsink require?

The 3D vapor-chamber heatsink covers one PCIe 5.0 M.2 slot and sits under the I/O cover; ensure your case allows the motherboard’s full ATX height and that no cable or bracket presses on the heatsink fins.

How is the CPU installed, and which step do builders often miss?

Lift the AM5 socket lever, align the Ryzen 9 9900X3D triangle marker with the socket corner, place the chip gently without force, lower the lever until it clicks, then attach the cooler — the step many skip is removing the protective plastic cover from the socket before seating the processor.

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