ASRock W790 WS

Supports 4th Gen Intel Xeon W-3400 and W-2400 Processors (LGA4677)20+2 Power Phase, 90A SPS Design14 Layer Server-Grade Ultra Low-Loss PCB8 x DDR5 DIMMs
Supports Quad Channel ECC Registered memory, up to 6800+ (OC)4 PCIe 5.0 x16, 1 PCIe 4.0 x164 Blazing M.2 (PCIe Gen5 x4), 1 U.2 mini SAS Connector (PCIe Gen4 x4), 8 SATA32 Thunderbolt™ 4 Type-C, 1 USB 3.2 Gen2x2 Type-C (Front), 2 USB 3.2 Gen2 (Rear), 8 USB 3.2 Gen1 (4 Rear, 4 Front)7.1 CH HD Audio (Realtek ALC897 Audio Codec)Dual Marvell AQUANTIA 10 GbE LANIntel i225LM 2.5 GbE LAN802.11ax WiFi 6E + Bluetooth 5.3Supports ASRock Blazing Quad M.2 Card

CPU

- Supports 4th Gen Intel Xeon W-3400 and W-2400 Processors (LGA4677)
- Supports Intel Boot Guard
- Supports Intel Trusted Execution Technology (Intel TXT)
- Supports Intel Turbo Boost Technology
- Supports Intel Virtualization Technology (Intel VT)
- Supports Intel Hyper-Threading Technology (Intel HT Technology)
- Supports Intel Data Streaming Accelerator (Intel DSA)
- Supports CXL (Compute Express Link) 1.1
- Supports ASRock Hyper BCLK Engine

Chipset

- Intel W790
- Supports Intel vPro Technology
- Supports Intel Active Management Technology

Memory

- Quad Channel DDR5 Memory Technology
- 8 x DDR5 DIMM Slots*
- Supports DDR5 ECC, buffered memory (RDIMM/ RDIMM-3DS/ RDIMM-9x4) up to 6800+(OC)**
- Max. capacity of system memory: 2TB

*S3 (Sleep) mode is supported only when 1 / 2 / 4 DIMMs memory modules are installed.
1DPC Up to 6800+ MHz (OC), 4800 MHz Natively for Xeon W9, Xeon W7 and Xeon W5.
2DPC Up to 6200+ MHz (OC), 4400 MHz Natively for Xeon W9, Xeon W7 and Xeon W5.
Supports 4400 MHz Natively for Xeon W3, W5-3423 and W5-3433. Overclocking is not supported.

**Actual support may vary by CPU

BIOS

- 256Mb AMI UEFI Legal BIOS with GUI support

Graphics

- n/a

Audio

- 7.1 CH HD Audio (Realtek ALC897 Audio Codec)
- Nahimic Audio

LAN

2 x 10 Gigabit LAN 100/1000/2500/5000/10000 Mb/s (Marvell (Aquantia) AQC113CS)
- Support Wake-On-LAN
- Support PXE
1 x 2.5 Gigabit LAN 10/100/1000/2500 Mb/s (Intel I225LM)
- Support Wake-On-LAN
- Support PXE
- Supports Intel vPro Technology

Wireless LAN

- 802.11ax Wi-Fi 6E Module
- Supports IEEE 802.11a/b/g/n/ac/ax
- Supports Dual-Band 2x2 with extended 6GHz band support*
- 1 antenna to support 2 (Transmit) x 2 (Receive) diversity technology
- Supports Bluetooth 5.3 + High speed class II
- Supports MU-MIMO

*Wi-Fi 6E (6GHz band) will be supported by Microsoft Windows 11. The availability will depend on the different regulation status of each country and region. It will be activated (for supported countries) through Windows Update and software updates once available.
A 6GHz compatible router is required for 6E functionality.

Slots

CPU:
- 4 x PCIe 5.0 x16 Slots (PCIE1/PCIE3 at x16; PCIE2/PCIE5 at x8)*
Chipset:
- 1 x PCIe 4.0 x16 Slot (PCIE4), supports x4 mode*
- 1 x Vertical M.2 Socket (Key E), supports type 2230 WiFi/BT PCIe WiFi module

- 15µ Gold Contact in VGA PCIe Slots

*Supports NVMe SSD as boot disks

Storage

CPU:
- 1 x Blazing M.2 Socket (M2_1, Key M), supports type 2230/2242/2260/2280 PCIe Gen5x4 (128 Gb/s) mode*
- 2 x Blazing M.2 Sockets (M2_2 and M2_3, Key M), support type 2260/2280 PCIe Gen5x4 (128 Gb/s) mode*
- 1 x Blazing M.2 Socket (M2_4, Key M), supports type 2260/2280 PCIe Gen5x4 (128 Gb/s) mode*
Chipset:
- 8 x SATA3 6.0 Gb/s Connectors
- 1 x U.2 Connector, supports PCIe Gen4x4 (64 Gb/s) mode

*Supports Intel Volume Management Device (VMD)
Supports NVMe SSD as boot disks

- Supports RAID 0, RAID 1, RAID 5 and RAID 10 for SATA storage devices
- Supports RAID 0, RAID 1, RAID 5 and RAID 10 for M.2 NVMe storage devices

USB

- 2 x Thunderbolt™ 4 Type-C (Rear)
- 1 x USB 3.2 Gen2x2 Type-C (Front)
- 2 x USB 3.2 Gen2 Type-A (Rear)
- 8 x USB 3.2 Gen1 (4 Rear, 4 Front)
- 3 x USB 2.0 (Front)
* All USB ports support ESD Protection

Connector

- 1 x Virtual RAID On CPU Header
- 1 x SPI TPM Header
- 1 x Chassis Intrusion and Speaker Header
- 1 x CPU Fan Connector (4-pin)*
- 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)**
- 3 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)***
- 1 x 24 pin ATX Power Connector (Hi-Density Power Connector)
- 2 x 8 pin 12V Power Connectors (Hi-Density Power Connector) (for Motherboard)
- 1 x 6 pin 12V Power Connector (Hi-Density Power Connector) (for Motherboard)****
- 2 x 8 pin 12V Power Connectors (Hi-Density Power Connector) (for PCIe card)*****
- 1 x Front Panel Audio Connector
- 2 x USB 2.0 Headers (Support 3 USB 2.0 ports)
- 2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports)
- 1 x Front Panel Type C USB 3.2 Gen2x2 Header (20 Gb/s)
- 1 x Clear CMOS Button
- 1 x Dr. Debug with LED
- 1 x Power Button with LED
- 1 x Reset Button with LED

*CPU_FAN1 supports the fan power up to 1A (12W).

**CPU_FAN2/WP_3A supports the fan power up to 3A (36W).

***CHA_FAN1~3/WP support the fan power up to 2A (24W).
CPU_FAN2/WP_3A and CHA_FAN1~3/WP can auto detect if 3-pin or 4-pin fan is in use.

****It is optional to connect an ATX 12V 6-pin Cable to ATX12V3, which provides more power for overclocking.

*****Use either GTX_12V1 or GTX_12V2 when you install one or two PCIe card(s). Use both connectors when you install more than two PCIe cards. Otherwise, the system may not boot up properly.

Rear Panel I/O

- 2 x Antenna Ports
- 1 x Optical SPDIF Out Port
- 2 x Thunderbolt™ 4 Type-C Ports*
- 2 x USB 3.2 Gen2 Type-A Ports (10 Gb/s)
- 4 x USB 3.2 Gen1 Ports
- 3 x RJ-45 LAN Ports
- 1 x BIOS Flashback Button
- 1 x Line Out Jack (Gold Audio Jack)
- 1 x Microphone Input Jack (Gold Audio Jack)

*Supports USB PD 3.0 up to 9V@3A (27W) / 5V@3A (15W) charging

Software and UEFI

Software
- ASRock Motherboard Utility (A-Tuning)
- ASRock XFast LAN
UEFI
- ASRock My Favorites in UEFI
- ASRock Auto Driver Installer
- ASRock Instant Flash
- ASRock Easy RAID Installer

*These utilities can be downloaded from ASRock Live Update & APP Shop.

Unique Feature

Superb Productivity
- PCIe Gen5 (Graphics, M.2)
- Quad Channel DDR5
- USB4 Type-C Ports
Rock-Solid Durability
- Ultra Low-Loss PCB
- 20+2 Power Phase, 90A SPS with Enlarged Heatsink Armor
- Flexible Integrated I/O Shield
- Nichicon 12K Black Caps (100% Japan made high quality conductive polymer capacitors)
Ultrafast Connectivity
- Dual Marvell (Aquantia) 10GbE LAN
- Intel 2.5GbE LAN
- Intel vPro for Workstations with Intel Advanced Management Technology
- 802.11ax Wi-Fi 6E
Module EZ Update
- BIOS Flashback Button
- ASRock Auto Driver Installer

Certifications

- FCC, CE
- ErP/EuP ready (ErP/EuP ready power supply is required)
- CEC Tier II ready

Operating System

- Microsoft Windows 10 64-bit / 11 64-bit
- Linux*

Accessories

- 1 x User Manual
- 4 x SATA Data Cables
- 1 x ASRock WiFi 2.4/5/6 GHz Antenna
- 1 x CPU Carrier for LGA 4677 E1A
- 1 x CPU Carrier for LGA 4677 E1B
- 4 x Screws for M.2 Sockets
- 2 x Standoffs for M.2 Sockets

Form Factor

- EATX Form Factor: 30.5 cm x 27.7cm
- 14 Layer PCB