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Dark ATX motherboard with CPU installed, large heatsinks and rear I/O shield

ASUS

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

SKU CH-HMMX-W4PXV

AM5 motherboard and Ryzen 9 9900X combo with DDR5 support to 9600 MT/s, five M.2 slots, dual USB4, 10 GbE, 5 GbE, Wi-Fi 802.11 be and Bluetooth 5.4

  • 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 9900X

  • AM5 socket supports Ryzen 9000, 8000 and 7000 series processors
  • Four DDR5 slots reach 8600 MT/s with Ryzen 9000 CPUs
  • 20 plus 2 plus 2 power stages rated at 110 A each deliver stable voltage
  • 3D vapour-chamber M.2 heatsink cools one PCIe 5.0 slot
  • Dual USB4 Type-C ports provide 40 Gbps bandwidth

AMD AM5 Platform Ready

This bundle pairs the ROG Crosshair X870E Dark Hero motherboard with a Ryzen 9 9900X processor, delivering an AM5 platform that supports Ryzen 9000, 8000 and 7000 series CPUs. Four DDR5 slots accept up to 256GB of memory, while five M.2 slots and four SATA ports provide extensive storage expansion for enthusiasts and creators.

Sustained Load Thermal Design

A 3D vapor-chamber heatsink covers the primary PCIe 5.0 M.2 slot, and massive VRM heatsinks integrate with the I/O cover through an L-shaped heatpipe and high-conductivity thermal pads. The 20+2+2 110A power stages with ProCool II connectors maintain stable delivery during prolonged compute or rendering sessions, while AI Cooling II balances fan curves automatically.

Upgrade Path From Older AM5 Builds

Builders moving from a 7000-series CPU gain access to DDR5 speeds up to 9600 MT/s with 9000-series processors, dual USB4 40Gbps ports, 10Gbps and 5Gbps Ethernet, and Wi-Fi 802.11 be. The jump is worthwhile when workloads demand higher memory bandwidth, faster external I/O or the AI Cache Boost and AI Overclocking toolset.

Highlights

  • AM5 socket supports Ryzen 9000, 8000 and 7000 series processors
  • Four DDR5 slots reach 8600 MT/s with Ryzen 9000 CPUs
  • 20 plus 2 plus 2 power stages rated at 110 A each deliver stable voltage
  • 3D vapour-chamber M.2 heatsink cools one PCIe 5.0 slot
  • Dual USB4 Type-C ports provide 40 Gbps bandwidth

Specifications

BrandASUS
ModelROG CROSSHAIR X870E DARK HERO +(R9 9900X)
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

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Questions about this item

Will the included CPU work with the motherboard socket out of the box?

Yes, the Ryzen 9 9900X uses the AM5 socket and is fully supported by the X870E chipset on this board.

What DDR5 memory speeds can I reach with the bundled processor?

With the Ryzen 9000 series CPU you can run DDR5 up to 8600 MT/s overclocked, or 8200 MT/s for a stable overclocked profile.

How many PCIe 5.0 M.2 drives can I install and keep cool?

Two PCIe 5.0 M.2 slots are onboard; the first slot has a dedicated 3D vapour-chamber heatsink, the second uses the board's substantial M.2 cooling array.

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