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.
15 Li Te Rd.,
Beitou, Taipei 112
Taiwan
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
Software licenses. If however you encounter any problems in obtaining the full corresponding source code
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
Contents ...................................................................................................................... iii
Notices vi
Safety information ..................................................................................................... vii
About this guide ....................................................................................................... viii
SABERTOOTH X79 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 ATI® 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
SABERTOOTH X79 specications summary
CPUIntel® Socket 2011 for 2nd Generation Intel® Core™ i7 Processor
ChipsetIntel® X79 Express Chipset
Memory8 x DIMM, Max. 64GB*, DDR3 1866/1600/1333/1066 MHz,
Expansion Slots2 x PCI Express 3.0 x16 slots (dual at x16/x16 mode)mode)
AudioRealtek® ALC892 8-channel High Denition Audio CODEC
IEEE 1394VIA® VT6315N controller supports 1 IEEE 1394a port at back
USB3 x ASMedia® USB 3.0 controllers
Extreme Edition
Supports Intel® Turbo Boost Technology 2.0
* Refer to www.asus.com for Intel CPU support list
ECC/non-ECC, un-buffered memory
Quad channel memory architecture
Supports Intel® Extreme Memory Prole (XMP)
* Hyper DIMM support is subject to the physical characteristics of
individual CPUs.
** 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 speed)
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 6Gb/s ports with RAID 0,1,5 and 10 support (brown)
- 4 x SATA 3Gb/s ports with RAID 0,1,5 and 10 support (black)
Back Panel I/O Ports1 x PS/2 Keyboard/Mouse combo port
- TUF Thermal Armor
- TUF Thermal Radar
“TUF ENGINE!” Power Design
- 8+2+2+2 Digital Phase Power Design
- TUF Components (Choke, Cap. & MOSFET; certied by
military-standard)
- ASUS DIGI+ Power Control Utility
“Safe & Stable!” Guardian Angel
- ESD Guards
- MemOK!
- Anti Surge
USB BIOS Flashback
USB 3.0 Boost
Front Panel USB 3.0 Support
ASUS UEFI BIOS EZ Mode featuring friendly graphics user
interface
AI Suite II
ASUS Q-Connector
ASUS Q-Shield
ASUS Q-LED (CPU, DRAM, VGA, Boot Device LED)
ASUS Q-Slot
ASUS Q-DIMM
ASUS O.C. Prole
ASUS CrashFree BIOS 3
ASUS EZ Flash 2
ASUS MyLogo 2™
Multi-language BIOS
1 x Optical S/PDIF Output port
1 x USB BIOS Flashback Button
1 x Power eSATA 6Gb/s port (green)
1 x eSATA 6Gb/s port (red)
1 x IEEE 1394a port
1 x LAN (RJ-45) port
4 x USB 3.0/2.0 ports (blue)
6 x USB 2.0/1.1 ports
8-channel Audio I/O ports
(continued on the next page)
xi
SABERTOOTH X79 specications summary
Internal I/O Connectors1 x USB 3.0/2.0 connector supports additional 2 USB 3.0/2.0
ManageabilityWfM 2.0, DMI 2.0, WOL by PME, WOR by PME, PXE
Support DVDDrivers
Form factorATX form factor: 12 in. x 9.6 in. (30.5 cm x 24.4 cm)
*Specications are subject to change without notice.
ports (19-pin; moss green)
4 x USB 2.0/1.1 connectors support additional 8 USB 2.0/1.1
ports
4 x SATA 6Gb/s connectors (2 x brown; 2 x gray)
4 x SATA 3Gb/s connectors (black)
1 x CPU Fan connector (4-pin)
1 x CPU OPT fan connector (4-pin)
4 x Chassis Fan connectors (4-pin)
1 x Assistant Fan connector (4-pin)
1 x PCH Fan connector (4-pin)
1 x Front panel audio connector (AAFP)
1 x COM connector
1 x S/PDIF Out header
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 Clear CMOS jumper
SM BIOS 2.6, ACPI 2.0a, Multi-language BIOS,
ASUS EZ Flash 2, ASUS CrashFree BIOS 3
ASUS Utilities
ASUS Update
Anti-virus software (OEM version)
xii
Chapter 1
User Manual
Five-year warranty
Chapter 1: Product introduction
1.1 Welcome!
Thank you for buying an ASUS® SABERTOOTH X79 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 SABERTOOTH X79
motherboard
4 x Serial ATA 6.0 Gb/s cables2 x Serial ATA 3.0 Gb/s cables
1 x ASUS Q-Shield1 x I/O Cover Fan1 x 2-in-1 ASUS Q-Connector kit
User guideSupport DVD
1 x ASUS SLI™ bridge
connector
Chapter 1
1 x TUF Certication card
ASUS SABERTOOTH X791-1
1 x TUF Five-year warranty
manual (by region)
• 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.
2 x long fan screws
1.3 Special features
1.3.1 Product highlights
Chapter 1
Intel® Socket 2011 for 2nd Generation Intel® Core™ i7 Process Extreme
Edition
This motherboard supports the latest Intel® 2nd Generation Core™ i7 Processor Extreme in
the LGA2011 package, with memory and PCI Express controllers integrated to quad-channel
(8 DIMMs) DDR3 memory and 16 PCI Express 2.0 lanes. This provides great graphics
performance. Intel® 2nd Generation Core™ i7 Processor Extreme 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 Intel® 2nd Generation Core™ i7 Processor Extreme. 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
SABERTOOTH X79 brings you the multi-GPU choice of either SLI™ or CrossFireX™. The™ 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 1866/1600/1333/1066 MHz support
The motherboard supports DDR3 memory that features data transfer rates of
1866/1600/1333/1066 MHz to meet the higher bandwidth requirements of the latest operation
system, 3D graphics, multimedia, and Internet applications. The quad-channel DDR3
architecture quadruple the bandwidth of your system memory to boost system performance.
* Due to CPU behavior, DDR3 1866 MHz memory module will run at DDR3 1600 MHz frequency as
default.
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 convenience 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.
Complete USB 3.0 Integration
ASUS facilitates strategic USB 3.0 accessibility for both the front and rear panel – 6 USB
3.0 ports in total. Experience the latest plug & play connectivity at speeds up to 10 times
faster than USB 2.0. The SABERTOOTH X79 affords greater convenience to high speed
connectivity.
1-2Chapter 1: Product Introduction
Extra SATA 6.0 Gb/s Support
The Intel® X79 Express Chipset natively supports the next-generation Serial ATA (SATA)
interface, delivering up to 6.0 Gb/s data transfer. ASUS provides extra SATA 6.0 Gb/s ports
with enhanced scalability, faster data retrieval, and double the bandwidth of current bus
systems.
1.3.2 “Ultimate COOL!” Thermal Solutions
TUF Thermal Armor
New generation TUF Thermal Armor kicks cooling up a notch with dual integrated Turbo
Engine fans. This enhances the original TUF thermal design, helping direct heat away from
MOS area components and out the case via the rear I/O section. Special heat pipes propel
dissipation from critical components and make sure temps stay low across the board. The
Thermal Armor also provides modder’s and LAN party goers an extra-cool dress up option to
show off their creativity and dedication to performance.
TUF Thermal Radar
The TUF Thermal Radar monitors temps in critical parts of the motherboard in real time,
automatically adjusting fan speeds to make sure the system maintains high stability without
overheating. It consists of multiple sensors for various components on the motherboard,
giving user the ability to monitor each one individually. The Thermal Radar automatically
calculates ideal fan speeds based on different parameters selected by users for each
component, keeping everything cooler and longer lasting.
1.3.3 “TUF ENGINE!” Power Design
New DIGI+ Power Control
All-new digital CPU and DRAM power controls work perfectly together to match digital
power signal (SVID) requests from the CPU, with ultra-fast sensing and response efciently
delivering precision power. Accurate delivery reduces waste, and provides more stable CPU
Vcore voltages. 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. This proprietary design increases
overclocking headroom to push performance to its full potential.
TUF Components (Choke, Cap. & MOSFET; certied by military-standard)
Get rugged performance even in the most challenging conditions with robust TUF chokes,
solid capacitors, and MOSFETs – certied through third-party, military-grade testing. TUF
chokes, also known as the “Ferrite Choke II”, is a made of compound of various types of
metal instead standard iron, enables the support of up to a massive 50A of rated current,
55% higher than conventional component. Furthermore, the single piece packaging also
elimates the emission of vibration noise, delivering superb characteristics as well as durability
under extreme conditions.
Chapter 1
ASUS SABERTOOTH X791-3
1.3.4 “Safe & Stable!” Guardian Angel
Chapter 1
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.
ESD Guards
ESD (Electrostatic Discharge) Guards provides protection against electrostatic discharges,
which can damage the motherboard’s components. The ASUS exclusive Anti-Static chip
and circuit design, and the I/O shield provide four times better protection and ensure the
motherboard’s lifespan.
1.3.5 ASUS EZ DIY
UEFI BIOS (EZ Mode)
ASUS brand new UEFI BIOS offers a user-friendly interface that goes beyond traditional
keyboard BIOS input to enable more exible and convenient mouse controls. You can easily
navigate the new UEFI BIOS with the same smoothness as their operating system. The
exclusive EZ Mode displays frequently-accessed setup info, while the Advanced Mode is for
experienced performance enthusiasts that demand far more intricate system settings.
AI Suite II
With its user-friendly interface, ASUS AI Suite II consolidates all the exclusive ASUS features
into one simple to use software package. It allows you to supervise energy management, fan
speed control, voltage and sensor readings. This all-in-one software offers diverse and ease
to use functions, with no need to switch back and forth between different utilities.
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
ASUS Q-Shield’s special design makes it convenient and easy to install on your
motherboard. With better electric conductivity, it ideally protects your motherboard against
static electricity and shields it against Electronic Magnetic Interference (EMI).
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.
1-4Chapter 1: Product Introduction
ASUS MyLogo2™
This feature allows you to convert your favorite photo into a 256-color boot logo for a more
colorful and vivid image on your screen.
ASUS Multi-language BIOS
The multi-language BIOS allows you to select the language of your choice from the available
options. The localized BIOS setup menu helps you congure your system easier and faster.
1.3.6 ASUS Exclusive Features
ASUS SSD Caching
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.
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 technology, the performance of a USB
device transmission speed is signicantly increased up to 130% (TBD), adding to an already
impressive fast USB 3.0 transfer speed. With USB 3.0 Boost technology, the system provides
a user-friendly graphical interface, which spontaneously accelerates the transfer speed
through USB 3.0 peripherals with an ASUS exclusive auto-detect setting.
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!
1.3.7 Other special features
Power eSATA 6Gb/ 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 specially designed signal cable to provide 5V power for the external
SATA device. The cable is purchased separately.
Chapter 1
ASUS SABERTOOTH X791-5
ErP Ready
The motherboard is European Union’s Energy-related Products (ErP) ready, and ErP requires
Chapter 1
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 SABERTOOTH X792-1
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. CPU, chassis, power, and assistant fan connectors
(4-pin CPU_FAN, CHA_FAN1–4, CPU_OPT, ASST_FAN)
2. DDR3 DIMM slots channel A and B2-5
3. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V)2-24
4. LGA2011 CPU socket2-4
5. DDR3 DIMM slots channel C and D2-5
6. MemOK! switch2-15
7. USB 3.0 connector (20-1 pin USB3_56)2-20
8. Intel® X79 Serial ATA 6Gb/s connectors
(7-pin SATA6G_1/2 [brown])
9. Intel® X79 Serial ATA 3Gb/s connectors
(7-pin SATA3G_3–6 [black])
10. Marvell® Serial ATA 6Gb/s connectors
(7-pin SATA6G_E1/E2 [gray])
11. System panel connector (20-8 pin PANEL)2-25
12. Clear RTC RAM (3-pin CLRTC)2-14
13. USB 2.0 connectors (10-1 pin USB78, USB910, USB1112,
USB1314)
14. Serial port connector (10-1 pin COM1)2-20
15. Front panel audio connector (10-1 pin AAFP)2-23
16. Digital audio connector (4-1 pin SPDIF_OUT)2-21
17. Standby power LED (SB_PWR)2-16
2-22
2-17
2-18
2-19
Chapter 2
2-21
ASUS SABERTOOTH X792-3
2.2.2 Central Processing Unit (CPU)
The motherboard comes with a surface mount LGA2011 socket designed for the Intel®
Core™ i7 Processor Extreme Edition.
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 SABERTOOTH X792-5
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, Channel B, Channel C and
Channel D. The system maps the total size of the lower-sized channel for the quadchannel conguration. Any excess memory from the higher-sized channel is then
mapped for single-channel operation.
• Due to CPU behavior, DDR3 1800 MHz memory module will run at DDR3 1600 MHz
frequency as default.
• 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
Ensure to unplug the power cord before adding or removing expansion cards. Failure to do
so may cause you physical injury and damage motherboard components.
Slot No. Slot Description
1PCIe 3.0 x16_1 slot (single at x16 or dual at x16/x16 mode)
2PCIe 2.0 x1_1 slot
3PCIe 2.0 x1_2 slot
4PCIe 3.0 x16_2 slot
5PCI slot 1
6PCIe 3.0 x16_3 slot (at x8 mode)
VGA conguration
Single VGA/PCIe card
Dual VGA/PCIe card
2-12Chapter 2: Hardware information
PCI Express operating mode
PCIe x16_1PCIe x16_2PCIe x16_3
x16
(Recommend for
single VGA)
x16x16N/A
N/AN/A
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