ASUS ROG CROSSHAIR X870E HERO BTF AMD motherboard & Ryzen 9 9900X3D CPU combo
- AM5
- AMD X870E
ASUS
AM5 motherboard paired with a 16-core 3D V-Cache CPU, DDR5 support up to 9600 MT/s, dual USB4 and 10 Gb Ethernet
model ROG CROSSHAIR X870E DARK HERO
+CPU +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.
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.
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.
| Brand | ASUS |
|---|---|
| Model | ROG CROSSHAIR X870E DARK HERO +(R9 9900X3D) |
| CPU Socket Type | AM5 |
| Chipset | AMD X870E |
| Number of Memory Slots | 4x288pin (DDR5) |
| Memory Standard | Supports 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 Supported | 256GB |
| Channel Supported | Dual Channel |
| ECC Supported | Yes |
| Buffer Supported | Un-buffered |
| PCI Express 5.0 x16 | AMD 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.2 | AMD 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 RAID | AMD RAIDXpert2 Technology Ryzen 9000 & 8000 & 7000 Series Processors: RAID 0/1/5/10 |
| Audio Channels | ROG 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 Speed | 10Gbps + 5Gbps |
| Wireless LAN | Wi-Fi 802.11 be |
| Bluetooth | Bluetooth 5.4 |
| Back I/O Ports | 2 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 USB | 2 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 Connectors | Fan 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 Factor | ATX |
| Dimensions (W x L) | 12.0" x 9.6" |
| Power Pin | 1 x 24-pin Main Power connector 2 x 8-pin +12V CPU Power connector 1 x 8-pin PCIe Power connector |
| BIOS Feature | 64 MB (512Mb) Flash ROM, UEFI AMI BIOS |
| Software | ROG 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 |
| Features | Extreme 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 Contents | Cables 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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The two USB4 Type-C ports on the rear I/O run at 40Gbps each.
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.
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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