How much memory can the ASUS Pro WS W790-ACE motherboard support?

The ASUS Pro WS W790-ACE motherboard can support up to 2TB of ECC R-DIMM DDR5 memory.

What type of processors is the ASUS Pro WS W790-ACE motherboard compatible with?

The ASUS Pro WS W790-ACE motherboard is compatible with Intel Xeon W-3400 and W-2400 series processors using the LGA 4677 socket.

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Main image of ASUS Pro WS W790-ACE Intel® W790 (LGA 4677) CEB workstation motherboard, PCIe 5.0 x16, M.2, 10G and 2.5G LAN, Server-grade Remote Management, 12+1+1 power stages, front and Rear USB 3.2 Gen 2x2 Type-C

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Alt view image 3 of 8 - ASUS Pro WS W790-ACE Intel® W790 (LGA 4677) CEB workstation motherboard, PCIe 5.0 x16, M.2, 10G and 2.5G LAN, Server-grade Remote Management, 12+1+1 power stages, front and Rear USB 3.2 Gen 2x2 Type-C

Alt view image 4 of 8 - ASUS Pro WS W790-ACE Intel® W790 (LGA 4677) CEB workstation motherboard, PCIe 5.0 x16, M.2, 10G and 2.5G LAN, Server-grade Remote Management, 12+1+1 power stages, front and Rear USB 3.2 Gen 2x2 Type-C

Alt view image 5 of 8 - ASUS Pro WS W790-ACE Intel® W790 (LGA 4677) CEB workstation motherboard, PCIe 5.0 x16, M.2, 10G and 2.5G LAN, Server-grade Remote Management, 12+1+1 power stages, front and Rear USB 3.2 Gen 2x2 Type-C

Alt view image 6 of 8 - ASUS Pro WS W790-ACE Intel® W790 (LGA 4677) CEB workstation motherboard, PCIe 5.0 x16, M.2, 10G and 2.5G LAN, Server-grade Remote Management, 12+1+1 power stages, front and Rear USB 3.2 Gen 2x2 Type-C

Alt view image 7 of 8 - ASUS Pro WS W790-ACE Intel® W790 (LGA 4677) CEB workstation motherboard, PCIe 5.0 x16, M.2, 10G and 2.5G LAN, Server-grade Remote Management, 12+1+1 power stages, front and Rear USB 3.2 Gen 2x2 Type-C

Alt view image 8 of 8 - ASUS Pro WS W790-ACE Intel® W790 (LGA 4677) CEB workstation motherboard, PCIe 5.0 x16, M.2, 10G and 2.5G LAN, Server-grade Remote Management, 12+1+1 power stages, front and Rear USB 3.2 Gen 2x2 Type-C

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ASUS Pro WS W790-ACE Intel® W790 (LGA 4677) CEB workstation motherboard, PCIe 5.0 x16, M.2, 10G and 2.5G LAN, Server-grade Remote Management, 12+1+1 power stages, front and Rear USB 3.2 Gen 2x2 Type-C

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Intel® LGA 4677 socket: Ready for Intel Xeon® W-3400 & W-2400 processors
CPU and memory overclocking: Supports for up to 2TB of ECC R-DIMM DDR5 memory (2DPC)
Ultrafast connectivity: 5 PCIe 5.0 x16 slots, 10G & 2.5G LAN, 2 M.2, front and rear USB 3.2 Gen 2x2 Type-C® and 3 SlimSAS
Server-grade IPMI remote management: Hardware and software-level with ASUS IPMI expansion card support, plus a real-time monitoring and management software – ASUS Control Center Express
Robust power and thermal design: 12+1+1 power stages, 8-pin PCIe power connector, Massive VRM, chipset and M.2 heatsinks and M.2 backplate
Trusted stability: Highly compatible with the latest technologies with solid QVL list and tested for 24/7 operation, validated for extensive compatibility

🔥Don't forget your OS, we have Windows 11 OEM, Download and USB versions available

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Model
Brand	ASUS
Model	Pro WS W790-ACE
Part Number	90MB1C70-M0AAY0

Supported CPU
CPU Socket Type	LGA 4677
CPU Type	Intel Socket LGA4677 for Xeon W-3400 and W-2400 Series Processors* Supports Intel Turbo Boost Max Technology 3.0 * Refer to www.asus.com for CPU support list.

Chipsets
Chipset	Intel W790

Memory
Number of Memory Slots	8x288pin (DDR5)
Memory Standard	6800(OC)/6600(OC)/6400(OC)/6200(OC)/6000(OC)/5800(OC)/5600(OC)/5400(OC)/5200(OC)/5000(OC)/4800 ECC Registered Memory* * Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information please refer to CPU/Memory Support under the Support tab or visit https://www.asus.com/support/
Maximum Memory Supported	2TB
Channel Supported	Quad Channel
Memory Feature	Supports Intel Extreme Memory Profile (XMP)

Expansion Slots
PCI Express 5.0 x16	Intel Xeon W-3400 and W-2400 Series Processors 5 x PCIe 5.0 x16 slot(s) (supports x16, x16, x16, x0/x8, x16/x8 modes) * Please check the PCIe bifurcation table on the support site (https://www.asus.com/support/FAQ/1037507/). - To ensure compatibility of the device installed, please refer to https://www.asus.com/support/ for the list of supported peripherals.

Storage Devices
Serial ATA (SATA)	4 x SATA 6Gb/s
M.2	Intel W790 Chipset** M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 mode) M.2_2 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
SATA RAID	Intel VROC Technology supports PCIe RAID 0/1/5/10, SATA RAID 0/1/5/10. VROC HW_Key is purchased separately.
SAS	SlimSAS_1 slot supports PCIe 3.0 x4 mode NVMe device SlimSAS_2 slot supports PCIe 4.0 x4 mode or up to 4 SATA devices via a transfer cable. The cable is purchased separately. SlimSAS_3 slot supports PCIe 4.0 x4 mode NVMe device

Onboard Audio
Audio Chipset	Realtek S1220A 7.1 Surround Sound High Definition Audio CODEC* - Impedance sense for front and rear headphone outputs - Internal audio Amplifier to enhance the highest quality sound for headphone and speakers - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking - High quality 120 dB SNR stereo playback output and 113 dB SNR recording input (Line-in) - Supports up to 32-Bit/192 kHz playback* Audio Features - Power pre-regulator reduces power input noise to ensure consistent performance - Rear optical S/PDIF out port - Premium audio capacitors - Dedicated audio PCB layers - Unique de-pop circuit * Due to limitations in HDA bandwidth, 32-Bit/192 kHz is not supported for 7.1 Surround Sound audio.
Audio Channels	7.1 Channels

Onboard LAN
LAN Chipset	1 x Marvell AQtion 10Gb Ethernet 1 x Intel 2.5Gb Ethernet ASUS LANGuard
Max LAN Speed	10Gbps + 2.5Gbps

Rear Panel Ports
Back I/O Ports	1 x USB 3.2 Gen 2x2 port(s) (1 x USB Type-C) 4 x USB 3.2 Gen 2 port(s) (4 x Type-A) 8 x USB 2.0 port(s) (8 x Type-A) 1 x Marvell AQtion 10Gb Ethernet port 1 x Intel 2.5Gb Ethernet port 5 x Audio jacks 1 x Optical S/PDIF out port 1 x BIOS FlashBack button 1 x Clear CMOS button

Internal I/O Connectors
Onboard USB	1 x USB 3.2 Gen 2x2 connector (support(s) USB Type-C ) 1 x USB 3.2 Gen 1 header(s) support(s) 2 additional USB 3.2 Gen 1 ports 2 x USB 2.0 header(s) support(s) 4 additional USB 2.0 ports
Other Connectors	Fan and Cooling related 1 x 4-pin CPU Fan header(s) 1 x 4-pin CPU OPT Fan header(s) 5 x 4-pin Chassis Fan header(s) 1 x W_PUMP+ header(s) Storage related 2 x M.2 slots (Key M) 3 x SlimSAS slots 4 x SATA 6Gb/s ports Miscellaneous 1 x BMC header 1 x COM Port header 1 x FlexKey button 1 x Front Panel Audio header (AAFP) 1 x LN2 Mode jumper 1 x ReTry button 1 x Start button 1 x SPI TPM header (14-1pin) 1 x 20-3 pin System Panel header with Chassis intrude function 1 x Thermal Sensor header 1 x VROC Key header

Software Feature
Windows 11	Supported

Physical Spec
Form Factor	CEB
Dimensions (W x L)	12.0" x 10.5"
Power Pin	2 x 24-pin Main Power connector 4 x 8-pin +12V Power connector 1 x 8-pin PCIe Power connector

Features
Features	Extreme OC Kit - FlexKey button - ReTry button - Start button ASUS 5X PROTECTION III - DIGI+ VRM (- Digital power design with DrMOS) - ESD Guards - LANGuard - Overvoltage Protection - Safeslot - Stainless-Steel Back I/O ASUS Q-Design - M.2 Q-Latch - Q-Code - Q-Connector - Q-DIMM - Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green]) - Q-Slot ASUS Thermal Solution - M.2 heatsink backplate - M.2 heatsink - VRM heatsink design ASUS EZ DIY - BIOS FlashBack button - BIOS FlashBack LED - Clear CMOS button - ProCool II - Pre-mounted I/O shield - SafeSlot - SafeDIMM Bespoke Motherboard Design & Business Focused Features - 24/7 Reliability - Overcurrent Protection

Packaging
Package Contents	Cables 2 x SATA 6Gb/s cables Miscellaneous 1 x Q-connector 1 x M.2 Rubber Package(s) 1 x M.2 backplate Rubber Package(s) Documentation 1 x ACC Express Activation Key Card 1 x User guide

Additional Information
First Listed on Newegg	April 10, 2026

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ASUS Pro WS W790-ACE Intel® W790 (LGA 4677) CEB workstation motherboard, PCIe 5.0 x16, M.2, 10G and 2.5G LAN, Server-grade Remote Management, 12+1+1 power stages, front and Rear USB 3.2 Gen 2x2 Type-C

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ASUS Pro WS W790-ACE Intel® W790 (LGA 4677) CEB workstation motherboard, PCIe 5.0 x16, M.2, 10G and 2.5G LAN, Server-grade Remote Management, 12+1+1 power stages, front and Rear USB 3.2 Gen 2x2 Type-C

Learn more about the ASUS Pro WS W790-ACE

Customer Reviews of the ASUS Pro WS W790-ACE

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Warranty, Returns, And Additional Information

Warranty

Return Policies

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