No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means, except documentation kept by the purchaser for backup purposes, without the express written
permission of ASUSTeK COMPUTER INC. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the
product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS
DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE),
EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY
DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE,
AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO
RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS
MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be registered trademarks or
copyrights of their respective companies, and are used only for identication or explanation and to the
owners’ benet, without intent to infringe.
Offer to Provide Source Code of Certain Software
This product may contain copyrighted software that is licensed under the General Public License (“GPL”)
and under the Lesser General Public License Version (“LGPL”). The GPL and LGPL licensed code in this
product is distributed without any warranty. Copies of these licenses are included in this product.
You may obtain the complete corresponding source code (as dened in the GPL) for the GPL Software,
and/or the complete corresponding source code of the LGPL Software (with the complete machinereadable “work that uses the Library”) for a period of three years after our last shipment of the product
including the GPL Software and/or LGPL Software, which will be no earlier than December 1, 2011, either
(1) for free by downloading it from http://support.asus.com/download;
or
(2) for the cost of reproduction and shipment, which is dependent on the preferred carrier and the location
where you want to have it shipped to, by sending a request to:
ASUSTeK Computer Inc.
Legal Compliance Dept.
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In your request please provide the name, model number and version, as stated in the About Box of the
product for which you wish to obtain the corresponding source code and your contact details so that we
can coordinate the terms and cost of shipment with you.
The source code will be distributed WITHOUT ANY WARRANTY and licensed under the same license as
the corresponding binary/object code.
This offer is valid to anyone in receipt of this information.
ASUSTeK is eager to duly provide complete source code as required under various Free Open Source
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we would be much obliged if you give us a notication to the email address gpl@asus.com, stating the
product and describing the problem (please do NOT send large attachments such as source code archives
etc to this email address).
ii
Contents
Notices vi
Safety information ..................................................................................................... vii
About this guide ....................................................................................................... viii
P9X79 specications summary ................................................................................. x
5.2.2 Installing two SLI-ready graphics cards ......................................5-4
5.2.3 Installing the device drivers ......................................................... 5-5
5.2.4 Enabling the NVIDIA® SLI™ technology ..................................... 5-5
v
Notices
Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
• This device may not cause harmful interference, and
• This device must accept any interference received including interference that may cause
undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with manufacturer’s instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
•
Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment and receiver.
•
Connect the equipment to an outlet on a circuit different from that to which the receiver is
connected.
•
Consult the dealer or an experienced radio/TV technician for help.
The use of shielded cables for connection of the monitor to the graphics card is required
to assure compliance with FCC regulations. Changes or modications to this unit not
expressly approved by the party responsible for compliance could void the user’s authority
to operate this equipment.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.
This class B digital apparatus complies with Canadian ICES-003.
REACH
Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of
Chemicals) regulatory framework, we published the chemical substances in our products at
ASUS REACH website at http://csr.asus.com/english/REACH.htm.
DO NOT throw the motherboard in municipal waste. This product has been designed to
enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin
indicates that the product (electrical and electronic equipment) should not be placed in
municipal waste. Check local regulations for disposal of electronic products.
DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol
of the crossed out wheeled bin indicates that the battery should not be placed in municipal
waste.
vi
Safety information
Electrical safety
• To prevent electrical shock hazard, disconnect the power cable from the electrical outlet
before relocating the system.
• When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
• Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
• Seek professional assistance before using an adapter or extension cord. These devices
could interrupt the grounding circuit.
• Ensure that your power supply is set to the correct voltage in your area. If you are not
sure about the voltage of the electrical outlet you are using, contact your local power
company.
• If the power supply is broken, do not try to x it by yourself. Contact a qualied service
technician or your retailer.
Operation safety
• Before installing the motherboard and adding devices on it, carefully read all the manuals
that came with the package.
• Before using the product, ensure all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.
• To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.
• Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may become wet.
• Place the product on a stable surface.
• If you encounter technical problems with the product, contact a qualied service
technician or your retailer.
vii
About this guide
This user guide contains the information you need when installing and conguring the motherboard.
How this guide is organized
This guide contains the following parts:
• Chapter 1: Product introduction
This chapter describes the features of the motherboard and the new technology it
supports.
• Chapter 2: Hardware information
This chapter lists the hardware setup procedures that you have to perform when
installing system components. It includes description of the switches, jumpers, and
connectors on the motherboard.
• Chapter 3: BIOS setup
This chapter tells how to change system settings through the BIOS Setup menus.
Detailed descriptions of the BIOS parameters are also provided.
• Chapter 4: Software support
This chapter describes the contents of the support DVD that comes with the
motherboard package and the software.
• Chapter 5: Multiple GPU technology support
This chapter describes how to install and congure multiple AMD® CrossFireX™ and
NVIDIA® SLI™ graphics cards.
Where to nd more information
Refer to the following sources for additional information and for product and software updates.
1. ASUS websites
The ASUS website provides updated information on ASUS hardware and software
products. Refer to the ASUS contact information.
2. Optional documentation
Your product package may include optional documentation, such as warranty yers,
that may have been added by your dealer. These documents are not part of the
standard package.
viii
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when trying to
complete a task.
CAUTION: Information to prevent damage to the components when trying to
complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to help you complete a task.
Typography
Bold text Indicates a menu or an item to select.
Italic
s Used to emphasize a word or a phrase.
<Key> Keys enclosed in the less-than and greater-than sign means
that you must press the enclosed key.that you must press the enclosed key.
Example: <Enter> means that you must press the Enter or
Return key.Return key.
<Key1> + <Key2> + <Key3> If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+).
Example: <Ctrl> + <Alt> + <Del>
ix
P9X79 specications summary
CPU2nd Generation Intel® Core™ i7 Processor family for the LGA
Chipset
Memory8 x DIMM, max. 64GB, DDR3 2400(O.C.) / 2133(O.C.) /
Expansion slots2 x PCI Express 3.0 x16 slots (Dual at x16/ x16 mode))
* Due to CPU behavior, DDR3 2200/2000/1800 MHz memory
module will run at DDR3 2133/1866/1600 MHz frequency as
default.
** Hyper DIMM support is subject to the physical characteristics of
individual CPUs. Some hyper DIMMs only support one DIMM
per channel. Please refer to Memory QVL for details.
*** Refer to www.asus.com or this user manual for the Memory
QVL (Qualied Vendors Lists).
1 x PCI Express 3.0 x16 slot (PCIe x16_3 at x8 mode)
2 x PCI Express 2.0 x1 slots
1 x PCI slot
* 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.
Supports AMD® Quad-GPU CrossFireX™ Technology
- 2 x SATA 6 Gb/s ports with RAID 0, 1, 5, 10 support
- 4 x SATA 3 Gb/s ports with RAID 0, 1, 5, 10 support
ASMedia® 1061 SATA controller
- 1 x Power eSATA 6Gb/s port
- 1 x eSATA 6Gb/s port
- Support 192khz / 24bit True BD Lossless Sound
- BD Audio Layer Content Protection
- DTS UltraPC II
- DTS Connect
- Supports Jack-Detection, Multi-Streaming and
Front Panel Jack-Retasking
- Optical S/PDIF Out port at back I/O
(continues on next page)
x
P9X79 specications summary
USB2 x ASMedia® USB 3.0 controllers
IEEE 1394VIA® VT6315N controller supports 1 x IEEE 1394a port (back
ASUS Unique FeaturesASUS Dual Intelligent Processors 3
- 4 x USB 3.0/2.0 ports at back panel (Blue)
Intel® X79 Express Chipset
- 14 x USB 2.0/1.1 ports
(8 ports at midboard; 6 ports at back panel)
panel)
with New DIGI+ Power Control:
CPU Power
- Industry leading Digital 8+2 Phase Power Design
- ASUS CPU Power Utility
DRAM Power
- Industry leading Digital 2+2 Phase Power Design
- ASUS DRAM Power Utility
ASUS TPU
- Auto Tuning, TurboV, TPU switch
ASUS EPU
- EPU, EPU switch
ASUS Exclusive Features:
- ASUS UEFI BIOS EZ Mode featuring friendly graphics user
interface
- USB 3.0 Boost
- MemOK!
- AI Suite II
- Ai Charger
ASUS Quiet Thermal Solution:
- ASUS Fanless Design: Stylish Heat-sink solution
- ASUS Fan Xpert+
ASUS EZ DIY:
- USB BIOS Flashback
- ASUS O.C. Prole
- ASUS MyLogo 2
- Percision Tweaker 2
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 2
- Multi-language BIOS
ASUS Q-Design:
- ASUS Q-Shield
- ASUS Q-Slot
- ASUS Q-DIMM
- ASUS Q-LED (CPU, DRAM, VGA, Boot Device LED)
- ASUS Q-Connector
(continues on next page)
xi
P9X79 specications summary
ASUS exclusive
overclocking features
Back panel I/O ports1 x PS/2 Keyboard/Mouse combo port
Internal I/O connectors4 x USB 2.0/1.1 connectors support additional 8 USB ports
BIOS features
Manageability
Support DVD contentsDrivers
Form factorATX form factor: 12 in. x 9.6 in. (30.5 cm x 24.4 cm)
*Specications are subject to change without notice.
Precision Tweaker 2:
- vCore: Adjustable CPU voltage at 0.005V increment
- vTTCPU: Adjustable I/O voltage at 0.00625V increment
- vCCSA: 255-step system agent voltage control
- vDRAM Bus: 160-step Memory voltage control
- vPCH: 96-step Chipset voltage control
- vCPU_PLL: 48-step CPU & PCH PLL voltage control
SFS (Stepless Frequency Selection):
- BCLK/PEG frequency tuning from 80MHz up to 300MHz at
0.1MHz increment
Overclocking Protection:
- ASUS C.P.R.(CPU Parameter Recall)
4 x USB 3.0/2.0 ports (blue)
6 x USB 2.0/1.1 ports (white port can be switched to USB BIOS
Flashback)
1 x IEEE1394a port
1 x USB BIOS Flashback button
1 x LAN (RJ-45) port
1 x Optical S/PDIF Out port
1 x eSATA 6Gb/s port (red)
1 x Power eSATA 6Gb/s port (green)
8-channel Audio I/O
2 x SATA 6Gb/s connectors
4 x SATA 3Gb/s connectors
1 x CPU Fan connector (4-pin)
1 x CPU Optional Fan connector (4-pin)
4 x Chassis Fan connectors (4-pin)
1 x Front panel audio connector (AAFP)
1 x COM connector
1 x TPM connector
1 x S/PDIF Out header
1 x Clear CMOS jumper
1 x 24-pin EATX Power connector
1 x 8-pin EATX 12V Power connector
1 x System Panel (Q-Connector)
1 x MemOK! button
1 x EPU switch
1 x TPU switch
64 Mb Flash ROM, UEFI BIOS, PnP, DMI 2.0, WfM 2.0,
SM BIOS 2.6, ACPI 2.0a, Multi-language BIOS,
ASUS EZ Flash 2, ASUS CrashFree BIOS 3
WfM 2.0, DMI 2.0, WOL by PME, WOR by PME, PXE
ASUS Utilities
ASUS Update
Anti-virus software (OEM version)
xii
Chapter 1
User Manual
Chapter 1: Product introduction
1.1 Welcome!
Thank you for buying an ASUS® P9X79 motherboard!
The motherboard delivers a host of new features and latest technologies, making it another
standout in the long line of ASUS quality motherboards!
Before you start installing the motherboard, and hardware devices on it, check the items in
your package with the list below.
1.2 Package contents
Check your motherboard package for the following items.
ASUS P9X79 motherboardUser guideSupport DVD
2 x Serial ATA 6.0 Gb/s cables2 x Serial ATA 3.0 Gb/s cables1 x ASUS Q-Shield
1 x ASUS SLI™ bridge
connector
• If any of the above items is damaged or missing, contact your retailer.
• The illustrated items above are for reference only. Actual product specications may
vary with different models.
1 x 2-in-1 ASUS Q-Connector kit
Chapter 1
ASUS P9X791-1
1.3 Special features
1.3.1 Product highlights
Chapter 1
2nd Generation Intel® Core™ i7 Processor family for the LGA 2011 Socket
This motherboard supports the latest 2nd Generation IntelIntel® Core™ i7 Processor Family inCore™ i7 Processor Family in
LGA2011 package, 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 IntelIntel® Core™ i7 Processor Family is one of the most powerfulCore™ i7 Processor Family is one of the most powerful
and energy efcient CPUs in the world.
Intel® X79 Express Chipset
The Intel® X79 Express Chipset is the latest single-chipset design that supports the new
socket 2011 2nd Generation IntelIntel® Core™ i7 Processor Family. It improves performance byCore™ i7 Processor Family. 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.
Quad-GPU SLI™ and Quad-GPU CrossFireX™ Support
P9X79 brings you the multi-GPU choice of either SLI™ or CrossFireX. The motherboard
features the most powerful Intel® X79 platform to optimize PCIe allocation in multiple GPU
congurations. Expect a brand-new gaming style you’ve never experienced before!
Quad-Channel DDR3 2400(O.C.)/2133(O.C.)/1866/1600/1333/1066 MHz Support
The motherboard supports DDR3 memory that features data transfer rates of 2400(O.
C.)/2133(O.C.)/1866/1600/1333/1066 MHz to meet the higher bandwidth requirements of
the latest operation system, 3D graphics, multimedia, and Internet applications. The quadchannel DDR3 architecture quadruple the bandwidth of your system memory to boost system
performance.
* Due to CPU behavior, DDR3 2200/2000/1800 MHz memory module will run at DDR3 2133/1866/1600
MHz frequency as default.
True USB 3.0 Support
Experience ultra-fast data transfers at 5.0Gbps with USB 3.0 - the latest connectivity
standard. Build to connect easily with next generation components and peripherals, USB 3.0
transfers data 10X faster and is also backward compatible with USB 2.0 components.
PCIe 3.0 Ready
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 convenicnce and seamless transition offered by complete backward
compatibility with PCIe 1.0 and PCIe 2.0 devices. It is a must-have feature 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.
1-2Chapter 1: Product Introduction
1.3.2 Dual Intelligent Processors 3 with New DIGI+ Power Control
The world’s rst Dual Intelligent Processors from ASUS pioneered twin onboard chips
- TPU (TurboV Processing Unit) and EPU (Energy Processing Unit). Third generation
Dual Intelligent Processors with New DIGI+ Power Control include two digital voltage
regulator modules (VRMs). An all-new digital controller now allows ultra-precise DRAM
tuning in addition to CPU voltage control. This evolution of innovative and industry-leading
ASUS technology provides super-accurate voltage tuning for better efciency, stability and
performance.
New DIGI+ Power Control
All-New Digital Power Control for both CPU and DRAM
ASUS X79 motherboards include New DIGI+ Power Control with two digital voltage regulator
modules (VRMs), including an all-new DRAM controller that allows ultra-precise memory
tuning in addition to CPU voltage control. This evolution of innovative, industry-leading ASUS
technology provides super-accurate voltages for better efciency, stability and performance.
Best in class power efciency 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 efciently deliver the right level of
power on demand. Accurate power reduces wasteful imprecision, and provides more stable
CPU Vcore voltages.
Increased CPU and DRAM overclocking range
With programmable digital controllers onboard, users can adjust CPU and DRAM PWM
voltages and frequencies for various overclocking scenarios, with accurate input through
UEFI BIOS tuning or the exclusive ASUS interface. System performance can also be
customized with specic CPU and DRAM power controls, including new VCCSA load line
calibration for increased voltage range, greater VCCSA current capability, and up to 30%
more capacitance. This proprietary design, with its precise yet exible power adjustments,
increases overclocking headroom to push performance to its full potential.
Chapter 1
TPU
Unleash your performance with ASUS’ simple onboard switch or AI Suite II utility. The TPU
chip offers precise voltage control and advanced monitoring through Auto Tuning and TurboV
functions. Auto tuning offers a user friendly way to automatically optimize the system for fast,
yet stable clock speeds, while TurboV enables unlimited freedom to adjust CPU frequencies
and ratios for optimized performance in diverse situations.
EPU
Tap into the world’s rst real-time PC power saving chip through a simple onboard switch or
AI Suite II utility. Get total system-wide energy optimization by automatically detecting current
PC loadings and intelligently moderating power consumption. This also reduces fan noise
and extends component longevity.
ASUS P9X791-3
1.3.3 ASUS Exclusive Features
Chapter 1
USB BIOS Flashback
USB BIOS Flashback offers the most convenient way to ash the BIOS ever! It allows
overclockers to try new BIOS versions easily, without even entering their existing BIOS or
operating system. Just plug in USB storage and push the dedicated button for 3 seconds,
and the BIOS is automatically ashed using standby power. Worry-free overclocking for the
ultimate convenience!
USB 3.0 Boost
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 signicantly
increased by up to 170%, adding to an already impressively fast USB 3.0 transfer speed.
USB 3.0 Boost provides a user-friendly graphical interface, which instantly accelerates the
transfer speeds for USB 3.0 peripherals with exclusive ASUS device auto-detect settings.
AI Suite II
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-inone software offers diverse and easy to use functions, with no need to switch back and forth
between different utilities.
MemOK!
MemOK! quickly ensures memory boot compatibility. This remarkable memory rescue tool
requires a mere push of a button to patch memory issues. MemOK! determines failsafe
settings and dramatically improves your system boot success.
1.3.4 ASUS Quiet Thermal Solution
ASUS Fanless Design—Heat-sink solution
The stylish heatsink offers 0dB cooling for a quiet PC environment. Attractive design
enhances the look of the board and case, while temperatures in the chipset and power phase
areas stay lower through high efciency heat exchange. Combining usability and aesthetics,
the stylish ASUS heatsink gives users an extremely silent and cool experience with elegant
design.
ASUS Fan Xpert+
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 proles offer exible automatic and manual fan
speed controls to achieve a quiet and cool computing environment.
1-4Chapter 1: Product Introduction
1.3.5 ASUS EZ DIY
ASUS UEFI BIOS
ASUS UEFI BIOS offers the rst 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
- F12 BIOS snapshot hotkey for sharing UEFI setup info and troubleshooting
- New F3 Shortcut for most accessed info
- ASUS DRAM SPD (Serial Presence Detect) Information for accessing memory info,
detecting faulty DIMMs and helping with difcult POST situations.
ASUS Q-Design
ASUS Q-Design enhances your DIY experience. All of Q-LED, Q-Slot, and Q-DIMM design
speed up and simplify the DIY process!
ASUS Q-Shield
The specially designed ASUS Q-Shield does without the usual "ngers" - making it
convenient and easy to install. With better electric conductivity, it ideally protects your
motherboard against static electricity and shields it against Electronic Magnetic Interference
(EMI).
Chapter 1
ASUS Q-Connector
ASUS Q-Connector allows you to easily connect or disconnect the chassis front panel cables
to the motherboard. This unique module eliminates the trouble of connecting the system
panel cables one at a time and avoiding wrong cable connections.
ASUS EZ-Flash 2
ASUS EZ Flash 2 is a user-friendly utility that allows you to update the BIOS without using a
bootable oppy disk or an OS-based utility.
1.3.6 Other special features
Power eSATA 6Gb/s Ready
Powered eSATA 6Gb/s combines data and power connectivity. Users enjoy 2X faster transfer
rates, and can use external SATA 6Gb/s devices with no additional power adapters. ASUS
provides two extra ports with enhanced scalability, faster data retrieval, and double the
bandwidth of current bus systems for extra speed and accessibility.
* Power eSATA requires a special designed signal cable to provide 5V power for the external SATA
device. The cable is purchased separately.
ASUS P9X791-5
DTS UltraPC II
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
Chapter 1
original sound to new levels with Audio Restoration, recreating the dynamic range of audio
les. 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.
DTS Connect
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.
ErP Ready
The motherboard is European Union’s Energy-related Products (ErP) ready, and ErP requires
products to meet certain energy efciency requirement in regards to energy consumptions.
This is in line with ASUS vision of creating environment-friendly and energy-efcient products
through product design and innovation to reduce carbon footprint of the product and thus
mitigate environmental impacts.
1-6Chapter 1: Product Introduction
Chapter 2
Chapter 2: Hardware information
2.1 Before you proceed
Take note of the following precautions before you install motherboard components or change
any motherboard settings.
• Unplug the power cord from the wall socket before touching any component.
• Before handling components, use a grounded wrist strap or touch a safely grounded
object or a metal object, such as the power supply case, to avoid damaging them due
to static electricity.
• Hold components by the edges to avoid touching the ICs on them.
• Whenever you uninstall any component, place it on a grounded antistatic pad or in the
bag that came with the component.
• Before you install or remove any component, ensure that the ATX power supply is
switched off or the power cord is detached from the power supply. Failure to do so
may cause severe damage to the motherboard, peripherals, or components.
ASUS P9X792-1
2.2 Motherboard overview
2.2.1 Motherboard layout
Chapter 2
Refer to
2.2.8 Internal connectors
information about rear panel connectors and internal connectors.
2-2Chapter 2: Hardware information
and
2.3.11 Rear panel connection
for more
Layout contents
Connectors/Jumpers/SlotsPage
1. DDR3 DIMM slots2-5
2. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V)2-30
3. LGA2011 CPU socket2-4
4. CPU, CPU OPT, Chassis fan connectors (4-pin CPU_FAN,
4-pin CPU_OPT, 4-pin CHA_FAN1/2/3/4)
5. MemOK!2-17
6. Intel® X79 Serial ATA 6.0 Gb/s connectors
(7-pin SATA6G_1/2 [gray])
7. Intel® X79 Serial ATA 3.0 Gb/s connectors
(7-pin SATA3G_3–6 [blue])
8. TPU switch2-18
9. EPU switch2-19
10. Standby Power LED2-20
11. System panel connector (20-8 pin PANEL)2-31
12. Clear RTC RAM (3-pin CLRTC)2-22
13. TPM connector (20-1 pin TPM)2-26
14. USB 2.0 connectors (10-1 pin USB78, USB910, USB1112,
USB1314)
15. Serial port connector (10-1 pin COM1) 2-26
16. Digital audio connector (4-1 pin SPDIF_OUT)2-27
17. Front panel audio connector (10-1 pin AAFP)2-29
2-28
2-23
2-24
Chapter 2
2-25
ASUS P9X792-3
2.2.2 Central Processing Unit (CPU)
The motherboard comes with a surface mount LGA2011 socket designed for the 2nd
Generation Intel® Core™ i7 Processor Family.
Chapter 2
Ensure that all power cables are unplugged before installing the CPU.
• Upon purchase of the motherboard, ensure that the PnP cap is on the socket and
the socket contacts are not bent. Contact your retailer immediately if the PnP cap
is missing, or if you see any damage to the PnP cap/socket contacts/motherboard
components. ASUS will shoulder the cost of repair only if the damage is shipment/
transit-related.
• Keep the cap after installing the motherboard. ASUS will process Return Merchandise
Authorization (RMA) requests only if the motherboard comes with the cap on the
LGA2011 socket.
• The product warranty does not cover damage to the socket contacts resulting from
incorrect CPU installation/removal, or misplacement/loss/incorrect removal of the PnP
cap.
2-4Chapter 2: Hardware information
2.2.3 System memory
The motherboard comes with eight Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) slots.
A DDR3 module is notched differently from a DDR or DDR2 module. DO NOT install a DDR
or DDR2 memory module to the DDR3 slot.
Recommended memory congurations
Chapter 2
ASUS P9X792-5
Memory congurations
You may install 1GB, 2GB, 4GB, and 8GB unbuffered, and non-ECC DDR3 DIMMs into the
DIMM sockets.
Chapter 2
• You may install varying memory sizes in Channel A, B, C, and D. The system maps
the total size of the lower-sized channel for the dual-channel, triple-channel, or quadchannel conguration. Any excess memory from the higher-sized channel is then
mapped for single-channel operation.
• Due to CPU behavior, DDR3 2200/2000/1800 MHz memory module will run at DDR3
2133/1866/1600 MHz frequency as default.
• According to Intel® spec, the max. 64GB memory capacity can be supported with
DIMMs of 8GB (or above). ASUS will update QVL once the DIMMs are available on
the market.
• According to Intel CPU spec, DIMM voltage below 1.65V is recommended to protect
the CPU.
• Always install DIMMs with the same CAS latency. For optimum compatibility, we
recommend that you obtain memory modules from the same vendor.
• Due to the memory address limitation on 32-bit Windows OS, when you install 4GB
or more memory on the motherboard, the actual usable memory for the OS can be
about 3GB or less. For effective use of memory, we recommend that you do any of the
following:
- Use a maximum of 3GB system memory if you are using a 32-bit Windows OS.
- Install a 64-bit Windows OS when you want to install 4GB or more on the
motherboard.
For more details, refer to the Microsoft® support site at
http://support.microsoft.com/kb/929605/en-us.
• This motherboard does not support DIMMs made up of 512Mb (64MB) chips or less
(Memory chip capacity counts in Megabit, 8 Megabit/Mb = 1 Megabyte/MB).
• The default memory operation frequency is dependent on its Serial Presence Detect
(SPD), which is the standard way of accessing information from a memory module.
Under the default state, some memory modules for overclocking may operate at a
lower frequency than the vendor-marked value. To operate at the vendor-marked
or at a higher frequency, refer to section
frequency adjustment.
• For system stability, use a more efcient memory cooling system to support a full
memory load (4 DIMMs or above) or overclocking condition.