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Dark grey ATX motherboard with integrated I/O shield, large heatsinks and a Ryzen 7 9700X CPU in the AM5 socket

ASUS

ASUS ROG Crosshair X870E Dark Hero AMD motherboard & Ryzen 7 9700X CPU Combo

SKU CH-HFVN-4AX0R

AM5 motherboard and Ryzen 7 9700X CPU combo with DDR5 support up to 8600 MT/s, dual USB4 40 Gbps ports, five M.2 slots and 10 Gbps plus 5 Gbps LAN

  • CPU socketAM5
  • ChipsetAMD X870E
  • Form factorATX
  • Memory slot count4 × 288pin (DDR5)
  • Supported memorySupports up to 8600+MT/s(OC)/8200+MT/s(OC) with Ryzen 9000 S
  • Max supported RAM256 GB

Model ROG CROSSHAIR X870E DARK HERO

CPU +Ryzen 7 9700X

  • AM5 socket supports Ryzen 9000, 8000 and 7000 series CPUs
  • 20 plus 2 plus 2 power stages rated at 110A each
  • 3D vapor-chamber M.2 heatsink cools one PCIe 5.0 slot
  • Dual USB4 Type-C ports deliver 40Gbps throughput
  • Wi-Fi 802.11 be and Bluetooth 5.4 provide fast wireless connectivity

Ready for advanced AI computing

This combo pairs the ROG Crosshair X870E Dark Hero motherboard with an AMD Ryzen 7 9700X processor on the AM5 socket. The board supports Ryzen 9000, 8000 and 7000 series CPUs and provides four DDR5 slots for up to 256GB of memory. It targets enthusiasts who want a high-end platform for AI workloads, content creation and gaming.

Bundled AI and overclocking tools change daily

ASUS AI Cache Boost, AI Advisor, AI Overclocking, AI Cooling II and AI Networking II automate tuning and thermal management. ROG technologies such as Dynamic OC Switcher, Core Flex, Asynchronous Clock and PBO Enhancement give manual control when needed. AEMP simplifies memory configuration across supported DDR5 speeds.

Suits builders who need maximum connectivity

Five M.2 slots, dual USB4 Type-C ports, 10Gbps and 5Gbps Ethernet, Wi-Fi 802.11 be and Bluetooth 5.4 cover storage and peripheral demands. The robust 20+2+2 power stage design with 110A ratings handles heavy loads. Users who only need a basic AM5 board or fewer M.2 slots should consider simpler models.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $1,141.99
Pricier than about 91% of the 1,906 comparable items (median $224.49).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameASUS
Model nameROG CROSSHAIR X870E DARK HERO +(R7 9700X)
Processor
CPU socketAM5
ChipsetAMD X870E
Memory
Memory slot count4 × 288pin (DDR5)
Supported memorySupports 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
Max supported RAM256 GB
Memory channelsDual Channel
ECC supportYes
BufferingUn-buffered
Storage
SATA ports4 x SATA 6Gb/s
M.2 slotsAMD 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 and RAID supportAMD RAIDXpert2 Technology
Ryzen 9000 & 8000 & 7000 Series Processors: RAID 0/1/5/10
Audio & video
Sound 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
Connectivity
Maximum network speed10 Gbit/s + 5 Gbit/s
Wi-Fi standardWi-Fi 802.11 be
Bluetooth support5.4
Ports & slots
Onboard USB headers2 x USB 20 Gbit/s connectors (support USB Type-C)
2 x USB 5 Gbit/s headers support 4 additional USB 5 Gbit/s ports
3 x USB 2.0 headers support 6 additional USB 2.0 ports
Power
Power connectors1 × 24-pin Main Power connector
2 × 8-pin +12 V CPU Power connector
1 × 8-pin PCIe Power connector
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
More details
BIOS64 MB (512Mb)
Flash ROM, UEFI AMI BIOS

Other versions of this model

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Questions about this item

Will the 3D VC M.2 heatsink on the M.2_1 slot need any maintenance or replacement over time?

The 3D VC M.2 heatsink is a passive component with no moving parts and requires no scheduled maintenance or replacement under normal use.

What is the first limit reached when running the 20 110A power stages continuously at full load?

The VRM thermal capacity is the first limit; the massive heatsinks and L-shaped heatpipe are designed to absorb sustained current from the 20 110A stages without throttling.

How much noise and heat does the board produce when the AI Cooling II feature manages fans all day?

AI Cooling II automatically tunes fan curves to the lowest speeds that keep VRM and M.2 temperatures in check, minimising both acoustic output and case heat during extended operation.

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