Overview
The ASUS ROG Crosshair X870E Edition 20 is an enthusiast-class E-ATX motherboard built around the AMD X870E chipset and Socket AM5. It supports compatible AMD Ryzen 9000, 8000, and 7000 Series desktop processors and combines advanced power delivery, DDR5 memory, PCIe 5.0 expansion, high-speed storage, USB4, and dual 10Gb Ethernet.
This special Edition 20 package includes the ROG Ryujin 360 Edition 20 all-in-one liquid cooler, which features a swivel dual 6.67-inch AMOLED display. ASUS also includes a ROG Hyper M.2 expansion card and a ROG Q-DIMM.2 expansion card, providing additional storage installation options beyond the motherboard's five onboard M.2 sockets.
The motherboard features a black enthusiast-oriented design, customizable lighting, extensive hardware controls, and dedicated diagnostic facilities for advanced system building and tuning.
Processor Support and Power Delivery
The AM5 socket supports compatible AMD Ryzen 9000, 8000, and 7000 Series desktop processors. CPU compatibility and supported operating modes depend on the exact processor and installed BIOS version.
The motherboard uses a 24+2+2 power-stage design comprising 24 CPU VCORE stages rated at 110A each, two SoC stages rated at 110A each, and two auxiliary stages rated at 80A each. Dual ProCool II 8-pin CPU power connectors provide connections to the power supply.
Enthusiast tuning features include Dynamic OC Switcher, Core Flex, an asynchronous clock generator, LN2 Mode, ProbeIt measurement points, and dedicated recovery controls. These functions provide options for configuring processor behavior, monitoring system parameters, and troubleshooting advanced builds.
Included ROG Ryujin 360 Edition 20 Liquid Cooler
The Edition 20 package includes the ROG Ryujin 360 Edition 20 all-in-one liquid cooling system. Its cooling assembly incorporates a copper liquid cold plate for the CPU and VRM, a radiator, and three pre-connected 120mm fans.
The cooler features a swivel dual 6.67-inch AMOLED LCD display. Through supported ASUS software, users can customize compatible display content and use Display Sync-Up Mode to synchronize supported visuals with compatible ASUS hardware.
Because the cooler is included in this Edition 20 package, check the case's radiator mounting positions, available clearance, and supported fan arrangement before assembly. The motherboard and cooler have separate physical installation requirements.
DDR5 Memory and Performance Tuning
Four DDR5 DIMM slots support dual-channel memory and up to 256GB of installed capacity. The motherboard supports AMD EXPO, ASUS Enhanced Memory Profile (AEMP), DIMM Fit, DIMM Fit Pro, and NitroPath DRAM Technology.
ASUS specifies different overclocked memory speeds according to processor family. With Ryzen 9000 Series processors, the published specifications reach up to 8600+ MT/s for manual overclocking and 8200+ MT/s using supported memory profiles. Ryzen 8000 and 7000 Series processors have different limits.
Actual memory performance depends on the processor, memory modules, number of populated DIMM slots, BIOS settings, and system stability. The highest advertised memory speeds are overclocking targets rather than guaranteed operating speeds for every configuration.
PCIe Expansion and Graphics Support
The motherboard provides two full-length PCIe 5.0 x16 slots with PCIe Q-Release functionality. With compatible Ryzen 9000 and 7000 Series processors, supported lane configurations include x16, x8/x8, x8/x4/x4, and x4/x4/x4/x4, subject to the installed devices and BIOS configuration.
When the primary graphics slot operates at PCIe 5.0 x16, the second slot operates at PCIe 3.0 x4 unless the bandwidth allocation is changed through BIOS settings. Compatible Ryzen 8000 Series processors have different expansion capabilities, with operating modes depending on the exact CPU model.
PCIe Q-Release simplifies the removal of compatible expansion cards. SafeSlot reinforcement provides mechanical support for compatible cards installed in the expansion slots.
Storage Capacity and Expansion Cards
The motherboard includes five onboard M.2 sockets and four SATA 6Gb/s ports. Two onboard M.2 sockets support PCIe 5.0 x4 with compatible Ryzen 9000 and 7000 Series processors, while three additional onboard sockets use PCIe 4.0 interfaces with different lane configurations.
The included ROG Hyper M.2 card adds two M.2 sockets that support PCIe 5.0 x4 when installed in a suitable expansion configuration. The included ROG Q-DIMM.2 card provides two additional M.2 sockets, including a PCIe 4.0 x4 interface and a PCIe 4.0 x2 interface.
With the included expansion cards, the system can accommodate up to nine M.2 drives across the motherboard and expansion hardware, subject to processor lane allocation, available expansion slots, supported interfaces, and the selected configuration.
The M.2_2 socket shares bandwidth with the USB4 controller. When a drive is installed in M.2_2, both the socket and USB4 controller operate at up to x2 mode by default. Configuring M.2_2 for x4 operation in BIOS disables the USB4 40Gbps ports.
Storage configuration should therefore be planned before installation, particularly when using multiple high-speed SSDs and expansion cards simultaneously.
Dual 10Gb Ethernet and Wi-Fi 7
The motherboard includes two Realtek 10Gb Ethernet interfaces for high-bandwidth wired networking. These connections can support compatible network switches, storage systems, and other devices capable of operating at the corresponding network speeds.
Integrated Wi-Fi 7 uses a 2x2 wireless configuration and supports the 2.4GHz, 5GHz, and 6GHz bands, with channel bandwidths up to 320MHz where supported. Bluetooth 5.4 provides connectivity for compatible wireless peripherals.
Actual wireless performance depends on the router, client devices, regional regulations, interference, and operating-system support. ASUS specifies Windows 11 version 24H2 or later for full Wi-Fi 7 functionality; earlier supported Windows 11 releases provide Wi-Fi 6E functionality instead.
USB4 and Front-Panel USB-C
The rear I/O panel includes two USB4 Type-C ports supporting data transfer rates up to 40Gbps, alongside twelve USB 10Gbps ports comprising eight Type-A and four Type-C connections.
Two internal USB 20Gbps Type-C headers support compatible front-panel connectors. One supports USB Power Delivery and Quick Charge 4+ output of up to 60W when the additional 8-pin PCIe power connector is installed. Without that additional power connection, the specified output is limited to 27W.
The second front-panel USB-C header supports USB 20Gbps connectivity and output up to 15W. Additional internal headers provide support for four USB 5Gbps ports and six USB 2.0 ports through compatible case connections.
Audio and System Monitoring
ROG SupremeFX audio uses the Realtek ALC4082 codec and an ESS ES9219 QUAD DAC. Supported features include high-resolution audio playback, front and rear headphone impedance sensing, optical S/PDIF output, and compatible 7.1-channel surround sound configurations.
For monitoring and troubleshooting, the board provides a Q-Code display, Q-LED indicators, ProbeIt measurement points, BIOS FlashBack, Clear CMOS, Safe Boot, ReTry, and Start controls. These features assist with diagnosing startup problems and managing advanced system configurations.
Key Features
- Edition 20 bundled liquid cooling: Includes the ROG Ryujin 360 Edition 20 AIO cooler with a swivel dual 6.67-inch AMOLED LCD and three 120mm fans.
- 24+2+2 power-stage design: Provides high-current CPU and SoC power delivery with dedicated overclocking and monitoring features.
- Expanded M.2 storage: Combines five onboard M.2 sockets with the included ROG Hyper M.2 and ROG Q-DIMM.2 expansion cards.
- Dual 10Gb Ethernet and Wi-Fi 7: Provides two high-speed wired network interfaces, integrated Wi-Fi 7, and Bluetooth 5.4.
- USB4 and advanced expansion: Includes two 40Gbps USB4 ports, PCIe 5.0 expansion slots, and front-panel USB-C connectivity with conditional 60W charging support.
Applications
- Enthusiast gaming PCs: Supports compatible Ryzen processors, high-performance graphics cards, DDR5 memory, and high-speed NVMe storage.
- Overclocking systems: Provides dedicated tuning controls, voltage measurement points, diagnostic facilities, and specialized recovery functions.
- Content creation workstations: Accommodates multiple SSDs, high-speed USB devices, and compatible graphics hardware for demanding creative workloads.
- High-bandwidth network systems: Provides dual 10Gb Ethernet connections for compatible network infrastructure and high-speed data transfers.
- Custom enthusiast builds: Combines the bundled LCD-equipped liquid cooler, customizable lighting, and coordinated Edition 20 hardware.
DC Supplies Product Note
This package is more than a standalone motherboard: it includes the ROG Ryujin 360 Edition 20 liquid cooler and two M.2 expansion cards. Before choosing a chassis, confirm E-ATX motherboard support and 360mm radiator clearance. For storage planning, remember that using M.2_2 at x4 disables the rear USB4 40Gbps ports, while the expansion cards' available bandwidth depends on processor and PCIe slot configuration.
Specifications
| Specification | Details |
|---|
| Brand | ASUS |
| Manufacturer | ASUSTeK Computer Inc. |
| Part Number / MPN | ROG CROSSHAIR X870E EDITION 20 |
| Product Type | Enthusiast desktop motherboard bundle |
| Product Series | ROG Crosshair Edition 20 |
| Chipset | AMD X870E |
| CPU Socket | AMD Socket AM5 |
| Supported Processor Families | AMD Ryzen 9000, 8000, and 7000 Series desktop processors |
| Power Delivery | 24+2+2 power stages: 24 × 110A VCORE, 2 × 110A SoC, 2 × 80A auxiliary |
| Memory Type | DDR5 |
| Memory Slots | 4 × DIMM |
| Maximum Memory Capacity | 256GB |
| Memory Architecture | Dual-channel |
| Memory Technologies | AMD EXPO, ASUS AEMP, DIMM Fit, DIMM Fit Pro, NitroPath DRAM Technology |
| Primary Expansion | 2 × PCIe 5.0 x16 slots; supported modes depend on CPU and BIOS configuration |
| Onboard M.2 Storage | 5 × M.2 sockets |
| Included Storage Expansion | ROG Hyper M.2 card with 2 M.2 sockets; ROG Q-DIMM.2 card with 2 M.2 sockets |
| Maximum M.2 Drive Capacity | Up to 9 M.2 drives across onboard sockets and included expansion cards, subject to configuration |
| PCIe 5.0 M.2 Support | 2 onboard sockets with compatible Ryzen 9000 and 7000 Series processors; 2 additional sockets on included ROG Hyper M.2 card |
| PCIe 4.0 M.2 Support | 3 onboard sockets; 2 additional sockets on included ROG Q-DIMM.2 card |
| SATA Storage | 4 × SATA 6Gb/s |
| RAID Support | AMD RAIDXpert2; supported configurations depend on processor and storage controller |
| Wired Networking | 2 × Realtek 10Gb Ethernet |
| Wireless Networking | Wi-Fi 7 (802.11be), 2×2, 2.4GHz / 5GHz / 6GHz |
| Maximum Wi-Fi Channel Bandwidth | 320MHz, where supported |
| Bluetooth | Bluetooth 5.4 |
| Rear USB4 | 2 × USB4 Type-C, up to 40Gbps |
| Rear USB 10Gbps | 12 ports: 8 × Type-A and 4 × Type-C |
| Front USB-C | 2 × USB 20Gbps headers; one supports up to 60W PD/QC4+ with additional power connection |
| Additional Internal USB | 2 headers for 4 × USB 5Gbps ports; 3 headers for 6 × USB 2.0 ports |
| Audio Codec | ROG SupremeFX, Realtek ALC4082 |
| Audio DAC | ESS ES9219 QUAD DAC |
| Digital Audio Output | Optical S/PDIF |
| Rear Display Connectivity | 2 × USB4 Type-C display outputs; display capability depends on supported graphics hardware |
| CPU Power Connectors | 2 × 8-pin +12V |
| Additional USB Power Connector | 1 × 8-pin PCIe power connector for specified 60W front USB-C output |
| BIOS Recovery | BIOS FlashBack |
| Diagnostic Features | Q-Code, Q-LED, ProbeIt, Safe Boot, ReTry, Start, Clear CMOS |
| Lighting | Polymo Lighting II and Aura Sync |
| Motherboard Form Factor | E-ATX |
| Motherboard Dimensions | 30.5 × 27.7 cm (12 × 10.9 inches) |
| Included Cooler | ROG Ryujin 360 Edition 20 all-in-one liquid cooler |
| Cooler Display | Swivel dual 6.67-inch AMOLED LCD |
| Cooler Fans | 3 × 120mm pre-connected Edition 20 fans |
| Included M.2 Expansion Hardware | ROG Hyper M.2 card with heatsink and ROG Q-DIMM.2 card with heatsink |
| Operating System Listed by ASUS | Windows 11 |
Frequently Asked Questions
What is included with the ROG Crosshair X870E Edition 20?
ASUS lists the ROG Ryujin 360 Edition 20 all-in-one liquid cooler, ROG Hyper M.2 card with heatsink, ROG Q-DIMM.2 card with heatsink, and associated accessories in the official package contents. Confirm the supplied items against the manufacturer's package list for the specific retail unit.
How many M.2 SSDs can this motherboard support?
The motherboard has five onboard M.2 sockets. The included ROG Hyper M.2 card and ROG Q-DIMM.2 card add two sockets each, allowing up to nine M.2 drives across the complete hardware package. Actual support depends on processor lanes, expansion-slot allocation, and interface configuration.
Does the ROG Crosshair X870E Edition 20 support PCIe 5.0 graphics cards?
Yes. It provides two full-length PCIe 5.0 x16 slots with configurable lane allocation when paired with supported Ryzen 9000 or 7000 Series processors. Ryzen 8000 Series processors have different PCIe capabilities.
Does the included liquid cooler fit every E-ATX case?
No. Case compatibility depends on the supported motherboard dimensions, radiator mounting position, radiator and fan clearance, and the surrounding components. Verify the chassis specifications before purchasing or assembling the system.
Can the front USB-C connector deliver 60W?
One front-panel USB 20Gbps Type-C header supports up to 60W USB Power Delivery and Quick Charge 4+ when the required additional 8-pin PCIe power connection is installed. Without it, the specified maximum output is 27W.
What should be checked before installing multiple SSDs?
Check the processor-specific PCIe lane configuration and the M.2_2 bandwidth-sharing limitation. Configuring M.2_2 for x4 operation disables the USB4 40Gbps ports. Also confirm the expansion-card installation requirements and supported SSD form factors.
Product Identification
Brand: ASUS
Manufacturer: ASUSTeK Computer Inc.
Series: ROG Crosshair Edition 20
Model: X870E Edition 20
Part Number / MPN: ROG CROSSHAIR X870E EDITION 20
Product Type: AMD X870E E-ATX motherboard bundle with ROG Ryujin 360 Edition 20 liquid cooler
