30% graphics performance boost with 4-way GeForce® SLI™ and CrossFireX™
Intel® LGA 2011 platform/Intel® X79 chipset
Quad Channel-8 DIMM
Best Graphics Performance with 4-Way Geforce SLI™ and Quad CrossFireX™
Dual Intel® Gigabit LAN Lower 71% CPU Utilization
Server level capability with RAID cards, Lan cards and Capture cards
3X Faster Performance with one-click ASUS SSD Caching
The ASUS Workstation Series is the ideal foundation for a powerful PC. It delivers awesome power, dependable performance and unmatched multiple I/O scalability for the most demanding tasks and future upgrades. The ASUS Workstation Series intelligently reduces operating noise and dissipates heat through advanced and environmentally friendly methods to accommodate user needs. ASUS Workstation Series motherboards also bring you ultimate reliability and quality through our 24x24 initiative, which means 24-hour non-stop operation and a 24-month life cycle supply guarantee so you don´t change computers so often.Instead, let the ASUS Workstation Series improve the quality of your work and life.
The Best Graphics Performance You ve Ever Experienced 
Based on extensive benchmarking, the 4-Way SLI™ offered by the P9X79 WS works up to 30% faster than standard 3-way SLI™ and up to 100% faster compared to 2-way SLI™, giving professional and power users more graphics performance on demand. Using PCI Express 3.0 x16 links, the four GPUs can reach their full potential, perfect for both intense gaming and commercial uses such as mechanical and architectural design, interior design, aeronautics, plus audio and video production.
Dual Intel® hardware-accelerated LAN
For more reliable networking, the P9X79 WS features built-in dual Intel® Gigabit LAN. This leads to lower 71% CPU utilization , increasing throughput to achieve outstanding performance as well as better support for diverse operating systems.
Instant O.C Status Checking with 3-color LED
At a glance workstation overclocking status with easy to understand color coding. Red means overclocked, blue means normal, while green denotes power saving mode. This is an essential and convenient tool to let users know more about overclocking conditions without entering the BIOS.
Server-level Compatibility with RAID card and Lan card
The P9X79 WS provides complete compatibility with RAID and LAN cards.Users enjoy a wider selection of devices and higher reliability. As a workstation motherboard that puts an emphasis on system integration, the P9X79 WS offers the benefit of greater confidence and convenience.
All-New Digital Power Control for both CPU and DRAM
ASUS X79 motherboards include New DIGI+ Power Control with three digital voltage controllers, including all-new DRAM controllers that offers ultra-precise memory tuning in addition to ultra-precise CPU voltage control. This evolution of innovative, industry-leading ASUS technology provides the best in class control for better efficiency, stability and performance.
Best in class power efficiency and stability
Two critical components work perfectly together to match digital power signal (SVID) requests from the CPU, with ultra-fast sensing and response to efficiently deliver the right level of power on demand. Accurate power reduces wasteful voltage imprecision, and provides more a stable CPU and memory setup. 
Increased CPU and DRAM overclocking range
With programmable digital controllers onboard, users can adjust CPU and DRAM voltage and VRM switching frequencies for various overclocking scenarios. New DRAM tuning possibilities make the most of DDR3 memory for better performance with VCCSA load line calibration and 30% more DRAM current capacity. Dual digital voltage controllers provide two separate outputs for AB and CD memory channels respectively. Thanks to a slew of power options teamed with an extensive and intuitive UEFI BIOS, overclocking very large memory setups is no more difficult than mainstream motherboards.
* VCCSA (system agent voltage) relates to the CPU DRAM controller. ASUS power control now provides more VCCSA options to facilitate extreme DRAM overclocking. 
Support for up to 64GB of system memory with an 8-DIMM design on ASUS X79 motherboards provides the capacity for users to make full use of modern 64-bit software, ideal for rendering detailed images or manipulating large files without the bottlenecks of conventional storage. It also allows users to set up big RAM disks and speed up frequently accessed programs, minimizing the impact of storage transfer delays while maximizing user benefit.
3X faster performance at a click
SSD Caching from ASUS is easier than ever. At 3X faster, this feature boosts system performance by using an installed SSD with no capacity limitations as a cache for frequently accessed data. Harness a combination of SSD-like performance and response and hard drive capacity with just one click, no rebooting needed and instant activation for complete ease of use, and even prevent data loss with included backup functionality.
ASUS UEFI BIOS offers the first mouse-controlled graphical BIOS designed with selectable modes, providing a user-friendly interface that goes beyond traditional keyboard-only controls. It also natively supports fully-utilized hard drives larger than 2.2TB in 64-bit operating systems.
ASUS exclusive interface
EZ Mode displays frequently-accessed info. Users can choose system performance settings and drag and drop boot priorities. Advanced Mode for performance enthusiasts includes detailed DRAM settings via a dedicated memory info page for complete insight.
New upgrade! Quick and easy info for enhanced system control
Easy, worry-free USB BIOS Flashback
USB BIOS Flashback offers the most convenient way to flash the BIOS ever! It allows overclockers to try new UEFI BIOS versions easily, without even entering their existing BIOS or operating system. It even works without key components such as the CPU and memory installed. Just plug in any USB storage and push the dedicated button for 3 seconds. The UEFI BIOS is automatically flashed using ATX standby power. Worry-free updating for the ultimate convenience! 
Customizable speeds with independent fan control
Hardware-level ASUS Fan Xpert+ allows users to independently adjust both CPU and case fan speeds with multiple dedicated controllers based on different ambient temperatures, climate conditions and system loads. Built-in profiles offer flexible automatic and manual fan speed controls to achieve a quiet and cool computing environment.
Faster USB 3.0 Transmission with UASP
New ASUS USB 3.0 Boost technology supports UASP (USB Attached SCSI Protocol), the latest USB 3.0 standard. With USB 3.0 Boost, USB device transmission speed is significantly increased by up to 170%, adding to already impressively fast USB 3.0 transfer speeds. USB 3.0 Boost provides a user-friendly graphical interface, which instantly accelerates transfer speeds for USB 3.0 peripherals with exclusive ASUS device auto-detect settings.
One-stop Access to Innovative ASUS Features
With its user-friendly interface, ASUS AI Suite II consolidates all exclusive ASUS features into one simple-to-use package with an elegant design theme. It allows users to supervise overclocking, energy management, fan speeds, voltage, and sensor readings. This all-in-one software offers diverse and easy to use functions, with no need to switch back and forth between different utilities. 
The latest PCI Express bus standard delivers improved encoding for twice the performance of current PCIe 2.0. Total bandwidth for a x16 link reaches a maximum of 32GB/s, double the 16GB/s of PCIe 2.0 (in x16 mode). PCIe 3.0 provides users unprecedented data speeds, combined with the convenience and seamless transition offered by complete backward compatibility with PCIe 1.0 and PCIe 2.0 devices. It’s a must-have feature for PC users aiming to improve and optimize graphics performance, as well as have the latest, most future-proof technology.
*This motherboard is ready to support PCIe 3.0 SPEC. Functions will be available when using PCIe 3.0-compliant devices. Please refer to www.asus.com for updated details.
> Get the latest BIOS version for optimal support of PCI Express 3.0.
Expand Your PC Audio Experience
To get the most out of your audio entertainment across all formats and quality levels, DTS Connect combines two enabling technologies. DTS Neo:PC™ upmixes stereo sources (CDs, MP3s, WMAs, internet radio) into as many as 7.1 channels of incredible surround sound. Consumers can then connect their PC to a home theater system.DTS Interactive is capable of performing multi-channel encoding of DTS bitstreams on personal computers, and sending encoded bitstreams out of a digital audio connection (such as S/PDIF or HDMI) designed to deliver audio to an external decoder.
DTS UltraPC II delivers exceptional 7.1 surround through the most popular PC audio setups - your existing stereo speakers or headphones. In addition to virtual surround, it upgrades original sound to new levels with Audio Restoration, recreating the dynamic range of audio files. Symmetry mode improves the balance of perceived loudness across different input sources and Enhance boosts audio quality through high and low frequency equalization. With these technologies, users experience better home theater audio with ease.
This motherboard supports the latest 2nd Generation Intel® Core™ i7 Processor family for the LGA 2011 Socket, with memory and PCI Express controllers integrated to quad-channel (8 DIMMs) DDR3 memory and 40 PCI Express 3.0 lanes. This provides great graphics performance. 2nd Generation Intel® Core™ i7 Processor family for the LGA 2011 Socket is one of the most powerful and energy efficient CPUs in the world.
The Intel® X79 Express Chipset is the latest single-chipset design that supports the 2nd Generation Intel® Core™ i7 Processor family for the LGA 2011 Socket. It improves performance by utilizing serial point-to-point links, allowing for increased bandwidth and stability. Additionally, the X79 comes with 2 SATA 6Gb/s and 4 SATA 3Gb/s ports for faster data retrieval, doubling the bandwidth of current bus systems.
Both SLI and CrossfireX architectures work flawlessly on new ASUS X79 boards, with PCI Express slots designed to accommodate the power of up to four current graphics cards. Whether for professional graphics work, heavy duty multimedia or dedicated gaming, more than ample graphics power can be applied whenever needed.
| CPU | Intel® Socket 2011 for 2nd Generation Core™ i7 Processors Supports Intel® Turbo Boost Technology 2 * Refer to www.asus.com for CPU support list |
| Chipset | Intel® X79 |
| Memory | 8 x DIMM, Max. 64GB, DDR3 2400(O.C.)/2133(O.C.)/1866/1600/1333/1066 MHz ECC, Non-ECC, Un-buffered Memory Quad Channel Memory Architecture Supports Intel® Extreme Memory Profile (XMP) * Hyper DIMM support is subject to the physical characteristics of individual CPUs. * Refer to www.asus.com or user manual for the Memory QVL (Qualified Vendors Lists). |
| Multi-GPU Support | Supports NVIDIA® 4-Way SLI™ Technology Supports AMD Quad-GPU CrossFireX™ Technology |
| Expansion Slots | 4 x PCIe 3.0/2.0 x16 (dual x16, triple x16/8/8, quad x8, black+blue) *1 2 x PCIe 3.0/2.0 x16 (x4 mode, white) *1 |
| Storage | Intel® X79 chipset : 2 x SATA 6Gb/s port(s), gray 4 x SATA 3Gb/s port(s), blue Support Raid 0, 1, 5, 10 Marvell® PCIe 9128 controller : 2 x SATA 6Gb/s port(s), navy blue Support Raid 0, 1 |
| LAN | Intel® 82579V, 1 x Gigabit LAN Controller(s) Intel® 82574L, 1 x Gigabit LAN Controller(s) |
| Audio | Realtek® ALC898 8-Channel High Definition Audio CODEC - Supports : Jack-detection, Multi-streaming, Front Panel Jack-retasking Audio Feature : - Absolute Pitch 192kHz/ 24-bit True BD Lossless Sound - DTS Ultra PC II - Optical S/PDIF out port(s) at back panel |
| IEEE 1394 | 1 x IEEE 1394a port(s) |
| USB Ports | ASMedia® USB 3.0 controller : 4 x USB 3.0 port(s) (2 at back panel, blue, 2 at mid-board) Intel® X79 chipset : 13 x USB 2.0 port(s) (8 at back panel, black, 5 at mid-board) |
| Workstation Feature | 6 x PCIe x 16 slot(s) Quick Gate: 1 x vertical USB 2.0 on board ASUS SASsaby series Cards support ASUS WS Diag. LED ASUS WS 3-color LED |
| Special Features | ASUS TPU : - Auto Tuning - TurboV - TPU switch ASUS EPU : - EPU - EPU switch ASUS Digital Power Design : - Industry leading Digital 8 + 2 Phase CPU Power Design - Industry leading Digital 2 + 2 Phase DRAM Power Design - CPU Power Utility - DRAM Power Utility ASUS Exclusive Features : - MemOK! - AI Suite II - Ai Charger - ASUS UEFI BIOS EZ Mode featuring friendly graphics user interface - ASUS SSD Caching - USB 3.0 Boost ASUS Quiet Thermal Solution : - Stylish Fanless Design Heat-pipe solution - ASUS Fan Xpert+ ASUS EZ DIY : - USB BIOS Flashback - ASUS Q-Shield - ASUS CrashFree BIOS 3 - ASUS EZ Flash 2 - ASUS MyLogo 2 - Multi-language BIOS ASUS Q-Design : - ASUS Q-Code - ASUS Q-Slot - ASUS Q-DIMM - ASUS Q-Connector |
| Back I/O Ports | 1 x PS/2 keyboard (purple) 1 x PS/2 mouse (green) 1 x IEEE 1394a 2 x LAN (RJ45) port(s) 2 x USB 3.0 8 x USB 2.0 (one port can be switched to USB BIOS Flashback) 1 x Optical S/PDIF out 6 x Audio jack(s) 1 x USB BIOS Flashback Button(s) |
| Internal I/O Ports | 1 x USB 3.0 connector(s) support(s) additional 2 USB 3.0 port(s) (19-pin) 2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s) 1 x Vertical USB 2.0 port(s) 1 x COM port(s) connector(s) 4 x SATA 6Gb/s connector(s) 4 x SATA 3Gb/s connector(s) 1 x CPU Fan connector(s) (4 -pin) 4 x Chassis Fan connector(s) (4 -pin) 1 x Optional Fan connector(s) (4 -pin) 1 x S/PDIF out header(s) 1 x 24-pin EATX Power connector(s) 1 x 8-pin ATX 12V Power connector(s) 1 x 4-pin EZ_PLUG Power connector(s) 1 x Front panel audio connector(s) (AAFP) 1 x System panel(s) (Q-Connector) 1 x MemOK! button(s) 1 x TPU switch(es) 1 x EPU switch(es) 1 x Power-on button(s) 1 x Reset button(s) 1 x Clear CMOS jumper(s) |
| Accessories | User s manual I/O Shield 2 x SATA 3Gb/s cable(s) 4 x SATA 6Gb/s cable(s) 1 x 3-Way SLI bridge(s) 1 x 4-Way SLI bridge(s) 1 x SLI bridge(s) 1 x Q-connector(s) (2 in 1) |
| BIOS | 64 Mb Flash ROM, UEFI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.6, ACPI 2.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree BIOS 3 |
| Support Disc | Drivers ASUS Utilities ASUS Update Anti-virus software (OEM version) |
| Form Factor | CEB Form Factor 12 inch x 10.5 inch ( 30.48 cm x 26.67 cm ) |
| Note | *1: This motherboard is ready to support PCIe 3.0 SPEC. Functions will be available when using PCIe 3.0-compliant devices. Please refer to www.asus.com for updated details. |
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