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E-ATX motherboard with large silver heatsinks, integrated I/O shield, 5-inch LCD display, and Ryzen 9 9950X CPU installed

ASUS

ASUS ROG Crosshair X870E Extreme AMD motherboard & Ryzen 9 9950X CPU combo

SKU CH-E7ZB-R408H

A motherboard and CPU bundle with a 16-core Ryzen 9 9950X, DDR5 support up to 256 GB, three PCIe 5.0 M.2 slots, 5G and 10G LAN, Wi-Fi 7, and a 20+2+2 phase power design

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

model ROG CROSSHAIR X870E EXTREME

+CPU +Ryzen 9 9950X

  • Ready for demanding AI workloads with high power and connectivity
  • 16 cores and 32 threads on Zen 5 architecture boost up to 5.7 GHz
  • Robust 20+2+2 power stages rated at 110 A with ProCool II connectors
  • Five M.2 slots including three PCIe 5.0 and two PCIe 4.0 with substantial cooling
  • Dual high-speed LAN with Realtek 5 GbE and Marvell 10 GbE plus Wi-Fi 7

Ready-built AM5 platform

This bundle pairs the ROG Crosshair X870E Extreme motherboard with a Ryzen 9 9950X processor. The board uses the AMD X870E chipset and AM5 socket, supporting Ryzen 9000, 8000 and 7000 series CPUs. It delivers four DDR5 slots for up to 256GB of memory in dual-channel mode. The combination targets builders who want a single validated kit for high-end workstations or enthusiast gaming rigs.

16-core Zen 5 processor

The included Ryzen 9 9950X runs 16 cores and 32 threads on the Zen 5 architecture. It reaches a 5.7 GHz maximum boost clock and is unlocked for overclocking. Cache totals 64MB L3 plus 16MB L2. This CPU specification is the primary factor that decides whether the bundle matches a workload needing heavy multi-threaded throughput.

Suits AI development and heavy rendering

The platform fits developers training local models, content creators rendering complex scenes, and enthusiasts chasing maximum multi-core speed. Buyers who only need mainstream gaming performance or a smaller form factor should consider a less extensive AM5 board and a lower-core-count Ryzen CPU instead.

Highlights

  • Ready for demanding AI workloads with high power and connectivity
  • 16 cores and 32 threads on Zen 5 architecture boost up to 5.7 GHz
  • Robust 20+2+2 power stages rated at 110 A with ProCool II connectors
  • Five M.2 slots including three PCIe 5.0 and two PCIe 4.0 with substantial cooling
  • Dual high-speed LAN with Realtek 5 GbE and Marvell 10 GbE plus Wi-Fi 7

Specifications

BrandASUS
SeriesROG
ModelROG CROSSHAIR X870E EXTREME+(R9 9950X)
CPU Socket TypeAM5
CPU TypeSupports up to
8200+MT/s(OC) with Ryzen 9000 Series Processors
8600+MT/s(OC) with Ryzen 8000 Series Processors
8000+MT/s(OC) with Ryzen 7000 Series Processors
ChipsetAMD X870E
Number of Memory Slots4x288pin (DDR5)
Maximum Memory Supported256GB
Channel SupportedDual Channel
ECC SupportedNon-ECC
Memory FeatureASUS Enhanced Memory Profile (AEMP)
NitroPath DRAM Technology
PCI Express 5.0 x16AMD Ryzen 9000 & 7000 Series Desktop Processors*
2 x PCIe 5.0 x16 slots with Q-Release Slim (supports x16 or x8/x8** or x8/x4/x4 modes***)
** When you use both PCIEX16(G5)_1 and PCIEX16(G5)_2, PCIEX16(G5)_1 and PCIEX16(G5)_2 will run x8.
***When M.2_3 is enabled, PCIEX16(G5)_1 will run x8, and PCIEX16(G5)_2 will run x4.
**** When M.2_2 and M.2_3 are enabled simultaneously, PCIEX16(G5)_2 will be disabled.
PCI Express 4.0 x16AMD Ryzen 8700 & 8600 & 8400 Series Desktop Processors*
2 x PCIe 4.0 x16 slots with Q-Release Slim (only supports PCIEx16(G5)_1 & total bandwidth for x8, PCIEx16(G5)_2 will be disabled)
AMD Ryzen 8500 & 8300 Series Desktop Processors*
2 x PCIe 4.0 x16 slots with Q-Release Slim (only supports PCIEx16(G5)_1 & total bandwidth for x4, PCIEx16(G5)_2 will be disabled)
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)*
M.2_3 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 5.0 x4 mode)**
AMD Ryzen 8000 Series Desktop Processors
M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 mode)
M.2_2 slot (Key M), type 2242/2260/2280 (Not supports)
M.2_3 slot (Key M), type 2242/2260/2280/22110 (Not supports)
AMD X870E Chipset
DIMM.2_1 slot (Key M) via ROG Q-DIMM.2, type 2230/2242/2260/2280/22110 (su
SATA RAID0/1/5/10
Audio ChannelsAudio Features
- SupremeFX Shielding Technology
- ESS ES9219 QUAD DAC
- LED-illuminated 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 audio output.
** The LINE OUT port on the rear panel does not support spatial audio. If you wish to use spatial audio, make sure to connect your audio output device to the audio jack on the front panel of your chassis or use a USB interface audio device.
LAN Chipset1 x Realtek 5Gb Ethernet
Second LAN Chipset1 x Marvell AQtion 10Gb Ethernet
Max LAN Speed10Gbps
Wireless LANWi-Fi 802.11 be
BluetoothBluetooth 5.4
Back I/O Ports2 x USB4 (40Gbps) ports (2 x USB Type-C)
10 x USB 10Gbps ports (8 x Type-A + 2 x USB Type-C)
1 x HDMI port
1 x Wi-Fi Module
1 x Realtek 5Gb Ethernet port
1 x Marvell AQtion 10Gb Ethernet port
2 x LED-illuminated audio jacks
1 x Optical S/PDIF out port
1 x BIOS FlashBack button
1 x Clear CMOS button
Onboard USB1 x USB 20Gbps connector (supports USB Type-C)
1 x USB 10Gbps connector (supports USB Type-C)
2 x USB 5Gbps headers support 4 additional USB 5Gbps ports
2 x USB 2.0 headers support 4 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
2 x 4-pin Chassis Fan headers
2 x 4-pin Radiator Fan headers
2 x W_PUMP+ headers
1 x VRM Heatsink Fan header
Miscellaneous
1 x 6-pin ARGB Gen 2 header to support 2 x ARGB Gen 2 headers
2 x Addressable Gen 2 header
1 x Alteration PCIe mode switch
2 x BCLK button
1 x BIOS Switch
1 x FlexKey button
1 x Front Panel Audio header (F_AUDIO)
1 x LN2 Mode jumper
12 x ProbeIt Measurement Points
1 x ReTry button
2 x RSVD switchs
1 x RSVD header
1 x Safe Boot button
1 x Slow Mode switch
1 x Start button
1 x 10-1 pin Sy
Form FactorExtended ATX
Dimensions (W x L)12.0" x 10.9"
Power Pin1 x 24-pin Main Power connector
2 x 8-pin +12V CPU Power connector
1 x 8-pin PCIe Power connector
BIOS Feature2 x 256 Mb Flash ROM, UEFI AMI BIOS
SoftwareROG Exclusive Software
- ROG CPU-Z
- Dolby Atmos
- Internet Security (1-year full version)
ASUS Exclusive Software
Armoury Crate
- AIDA64 Extreme (1 year full version)
- Aura Creator
- Aura Sync
- Fan Xpert 4 (with AI Cooling II)
- GameFirst
- HWiNFO
- Power Saving
- LCD Display
ASUS AI Advisor
ASUS DriverHub
Turbo Vcore
ASUS GlideX
USB Wattage Watcher
WinRAR (40 Days Free Trial)
Adobe Creative Cloud (Free Trial)
UEFI BIOS
AI Overclocking Guide
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
- ASUS UEFI BIOS EZ Mode
- ASUS MyHotkey
FlexKey
Windows 11Supported
FeaturesExtreme OC Kit
- FlexKey button
- LN2 Mode
- ProbeIt
- ReTry button
- Safe boot button
- Start button
- Slow Mode
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
- Q-Release Slim (with PCIe SafeSlot)
- Q-Antenna
- Q-Code
- Q-Connector
- Q-Dashboard
- Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green])
- Q-Slot
- Q-DIMM.2
ASUS Thermal Solution
- Fan bracket
- M.2 heatsink backplate
- M.2 heatsink
- Metal backplate
- VRM heatsink design
- 3D VC M.2 Heatsink
ASUS EZ DIY
- Backpla

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Questions about this item

What does the 5.7 GHz max boost on the Ryzen 9 9950X mean for single-threaded workloads in a built system?

The 16-core CPU can reach 5.7 GHz on a single core when thermal and power headroom allow, giving snappy response in lightly threaded tasks while the unlocked multiplier lets enthusiasts push frequencies higher with adequate cooling.

How does the PCIe 5.0 x16 slot arrangement limit GPU bandwidth when both top slots are populated?

With Ryzen 9000 or 7000 series the first slot runs at x16 or drops to x8/x8 when the second slot is used; with Ryzen 8700/8600/8400 the second slot is disabled and the first runs at x8 total bandwidth.

What clearance does the 5-inch LCD and integrated I/O heatsink require from the case side panel and CPU cooler?

The E-ATX board needs a chassis that accepts the form factor; the LCD sits on the I/O cover so the side panel must clear it, and the massive VRM heatsinks with heatpipes demand a CPU cooler that does not overhang the top-edge mounting zone.

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