ASRock W790 WS


ASRock W790 WS Main Picture

ASRock W790 WS Picture 79577ASRock W790 WS Picture 79578
The ASRock W790 WS is an EATX size motherboard for Intel's Xeon W processors. In addition to the 4677 socket for the CPU, it has eight RAM slots (but only four memory channels) supporting up to 512GB of DDR5 Registered ECC memory and five PCI-Express slots of varying size and speed. That layout allows for a wide range of expansion card configurations, and since the board isn't too massive it can even fit in some mid-tower cases.

A wide range of connectivity is provided as well: six standard USB ports, two of the new USB Type C, two Thunderbolt 4 ports, dual 10Gb Ethernet, WiFi, Bluetooth, and both analog and digital audio. Internally it has eight SATA ports and four M.2 connectors, supporting a very flexible array of storage options.

Model: ASRock W790 WS


Socket 4677
CPU Compatibility Sapphire Rapids
Form Factor CEB
Chipset Manufacturer Intel
Chipset W790
Front Side Bus DMI 4.0
Network Connectivity 10G + 2.5G Networking + WiFi 6e
Network Controller Aquantia AQC113CS, Intel I225LM, Intel AX211
Audio Controller Onboard Realtek S1220A HD Audio
Cooling System Passive Heatsink
Color Black
Memory Support
Type DDR5 ECC Registered
Maximum Speed 4800 MHz
Number of Slots 8
Maximum Size per Slot 256 GB
Maximum Amount Supported 2048 GB
External Connections
USB 3.2 Gen 1 (USB 3.0) 4
USB 3.2 Gen 2 (USB 3.1) 2
Audio Out Stereo
Audio In Line-In/Microphone
S/PDIF Optical
LAN (RJ45) 3
Wireless Antenna Port Yes
Thunderbolt Ports 2
Thunderbolt Version 4
BIOS Flashback Yes
Internal Connections
USB 2.0 2 (providing 4 ports)
USB 3.2 Gen 1 (USB 3.0) 2
USB 3.2 Gen 2x2 Type C 1
SATA III 6.0Gbps 8
M.2 Connector 3
M.2 Support 1x 30-80mm PCIe 5.0, 3x 60-80mm PCIe 5.0
U.2 Connector 1
Serial (Com) 1
TPM (module sold separately) 1
SATA Controllers
SATA III 6.0Gbps Controller 1 Intel W790
Expansion Slots
Slot 1 Slot not available on this board
Slot 2 PCI Express 5.0 x16
Slot 3 Slot not available on this board
Slot 4 PCI Express 5.0 x8 in a x16 size
Slot 5 PCI Express 5.0 x16
Slot 6 PCI Express 4.0 x4 in a x16 size
Slot 7 PCI Express 5.0 x8 in a x16 size
Additional Information
SLI Compatible No
Crossfire Compatible No
RAID Support 0/1/5/10
Bluetooth No
Dual GPU Slot Spacing 4-Slot
Integrated IO Shield Yes
BIOS Features
EZ Flash Yes
OC Profiles Yes
Height 305 mm (12.0 in)
Width 227 mm (8.9 in)
Net Weight 1.756 kg (3.9 lbs)

Smaller EATX motherboard for 4th Gen Xeon - Sapphire Rapids.

Puget Systems uses a custom BIOS has our settings applied by default. Please contact our Support department when updating to a new BIOS version.