GIGA-BYTE TECHNOLOGY GA-H81M-DS2 User manual

GA-H81M-DS2
User's Manual
Rev. 3001
12ME-H81MDS2-3001R

Motherboard
GA-H81M-DS2
Nov. 8, 2013
Jun. 12, 2014
Motherboard
GA-H81M-DS2
Copyright
©2016 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved.
The trademarks mentioned in this manual are legally registered to their respective owners.
Disclaimer
Information in this manual is protected by copyright laws and is the property of GIGABYTE.
Changes to the specications and features in this manual may be made by GIGABYTE without prior notice.
No part of this manual may be reproduced, copied, translated, transmitted, or published in any form or by
any means without GIGABYTE's prior written permission.
In order to assist in the use of this product, carefully read the User's Manual.
For product-related information, check on our website at: http://www.gigabyte.com
Identifying Your Motherboard Revision
The revision number on your motherboard looks like this: "REV: X.X." For example, "REV: 1.0" means the
revision of the motherboard is 1.0. Check your motherboard revision before updating motherboard BIOS,
drivers, or when looking for technical information.
Example:

- 3 -
Table of Contents
GA-H81M-DS2 Motherboard Layout ...............................................................................4
GA-H81M-DS2 Motherboard Block Diagram...................................................................5
Chapter 1 Hardware Installation .....................................................................................6
1-1 Installation Precautions.................................................................................... 6
1-2 Product Specications...................................................................................... 7
1-3 Installing the CPU ............................................................................................ 9
1-4 Installing the Memory....................................................................................... 9
1-5 Installing an Expansion Card ......................................................................... 10
1-6 Back Panel Connectors.................................................................................. 10
1-7 Internal Connectors........................................................................................ 11
Chapter 2 BIOS Setup ..................................................................................................16
2-1 Startup Screen ............................................................................................... 16
2-2 M.I.T. .............................................................................................................. 17
2-3 System Information ........................................................................................ 21
2-4 BIOS Features ............................................................................................... 22
2-5 Peripherals..................................................................................................... 25
2-6 Power Management....................................................................................... 27
2-7 Save & Exit..................................................................................................... 28
Chapter 3 Appendix ......................................................................................................29
Drivers Installation..................................................................................................... 29
Regulatory Statements.............................................................................................. 30
Contact Us ................................................................................................................ 32

- 4 -
GA-H81M-DS2 Motherboard Layout
The box contents above are for reference only and the actual items shall depend on the product package you obtain.
The box contents are subject to change without notice.
Box Contents
5GA-H81M-DS2 motherboard
5Motherboard driver disk 5Two SATA cables
5User's Manual 5I/O Shield
KB_MS
CPU_FAN
SYS_FAN
LGA1150
ATX
GA-H81M-DS2
F_AUDIO
AUDIO
B_BIOS
DDR3_1 DDR3_2
BAT
ATX_12V
Intel®H81
R_USB30
CODEC
CLR_CMOS
M_BIOS
COM
VGA
LPT
USB_LAN
PCIEX16
PCIEX1_1
PCIEX1_2
iTE®
Super I/O
Realtek®
GbE LAN
F_USB1F_USB2
F_PANEL
SATA3 1
0
SATA2 3
2

- 5 -
GA-H81M-DS2 Motherboard Block Diagram
PS/2 KB/Mouse
LGA1150
CPU
Intel®H81
PCIe CLK
(100 MHz)
CPU CLK+/- (100 MHz)
1 PCI Express x16
Dual BIOS
COM
LPT
6 USB 2.0/1.1
2 USB 3.0/2.0
LPC
Bus
DDR3 1600/1333 MHz
LAN
RJ45
PCI Express Bus
PCI Express Bus
PCIe CLK
(100 MHz) Realtek®
GbE LAN
2 PCI Express x1
2 SATA 3Gb/s
2 SATA 6Gb/s
D-Sub
DMI 2.0
FDI
x16
Dual Channel Memory
x1x1 x1
iTE®
Super I/O
For detailed product information/limitation(s), refer to "1-2 Product Specications."
Line Out (Front Speaker Out)
MIC (Center/Subwoofer
Speaker Out)
Line In (Rear Speaker Out)
CODEC

- 6 -
Chapter 1 Hardware Installation
1-1 Installation Precautions
The motherboard contains numerous delicate electronic circuits and components which can become
damaged as a result of electrostatic discharge (ESD). Prior to installation, carefully read the user's
manual and follow these procedures:
•Prior to installation, make sure the chassis is suitable for the motherboard.
•Prior to installation, do not remove or break motherboard S/N (Serial Number) sticker or
warranty sticker provided by your dealer. These stickers are required for warranty validation.
•Always remove the AC power by unplugging the power cord from the power outlet before
installing or removing the motherboard or other hardware components.
•When connecting hardware components to the internal connectors on the motherboard, make
sure they are connected tightly and securely.
•When handling the motherboard, avoid touching any metal leads or connectors.
•It is best to wear an electrostatic discharge (ESD) wrist strap when handling electronic
components such as a motherboard, CPU or memory. If you do not have an ESD wrist strap,
keep your hands dry and rst touch a metal object to eliminate static electricity.
•Prior to installing the motherboard, please have it on top of an antistatic pad or within an
electrostatic shielding container.
•Before connecting or unplugging the power supply cable from the motherboard, make sure
the power supply has been turned off.
•Before turning on the power, make sure the power supply voltage has been set according to
the local voltage standard.
•Before using the product, please verify that all cables and power connectors of your hardware
components are connected.
•To prevent damage to the motherboard, do not allow screws to come in contact with the
motherboard circuit or its components.
•Make sure there are no leftover screws or metal components placed on the motherboard or
within the computer casing.
•Do not place the computer system on an uneven surface.
•Do not place the computer system in a high-temperature or wet environment.
•Turning on the computer power during the installation process can lead to damage to system
components as well as physical harm to the user.
•If you are uncertain about any installation steps or have a problem related to the use of the
product, please consult a certied computer technician.
•If you use an adapter, extension power cable, or power strip, ensure to consult with its installation
and/or grounding instructions.

- 7 -
1-2 ProductSpecications
CPU Support for Intel®Core™i7 processors/Intel®Core™i5 processors/
Intel®Core™i3 processors/Intel®Pentium®processors/Intel®Celeron®processors
in the LGA1150 package
(Go to GIGABYTE's website for the latest CPU support list.)
L3 cache varies with CPU
Chipset Intel®H81 Express Chipset
Memory 2 x 1.5V DDR3 DIMM sockets supporting up to 16 GB of system memory
* Due to a Windows 32-bit operating system limitation, when more than 4 GB of physical
memory is installed, the actual memory size displayed will be less than the size of
the physical memory installed.
Dual channel memory architecture
Support for DDR3 1600/1333 MHz memory modules
Support for non-ECC memory modules
Support for Extreme Memory Prole (XMP) memory modules
(Go to GIGABYTE's website for the latest supported memory speeds and memory
modules.)
Onboard
Graphics
Integrated Graphics Processor:
- 1 x D-Sub port, supporting a maximum resolution of 1920x1200
- Maximum shared memory of 1 GB
Audio Realtek®ALC887 codec
High Denition Audio
2/4/5.1/7.1-channel
* To congure 7.1-channel audio, you have to use an HD front panel audio module
and enable the multi-channel audio feature through the audio driver.
LAN Realtek®GbE LAN chip (10/100/1000 Mbit)
Expansion Slots 1 x PCI Express x16 slot, running at x16
2 x PCI Express x1 slots
(The PCI Express slots conform to PCI Express 2.0 standard.)
Storage Interface Chipset:
- 2 x SATA 6Gb/s connectors (SATA3 0/1)
- 2 x SATA 3Gb/s connectors (SATA2 2/3)
USB Chipset:
- 2 x USB 3.0/2.0 ports on the back panel
- 6 x USB 2.0/1.1 ports (2 ports on the back panel, 4 ports available through
the internal USB headers)
Internal
Connectors
1 x 24-pin ATX main power connector
1 x 4-pin ATX 12V power connector
2 x SATA 6Gb/s connectors
2 x SATA 3Gb/s connectors
1 x CPU fan header
1 x system fan header
1 x front panel header
1 x front panel audio header
2 x USB 2.0/1.1 headers
1 x Clear CMOS jumper

- 8 -
Back Panel
Connectors
1 x PS/2 mouse port
1 x PS/2 Keyboard port
1 x parallel port
1 x serial port
1 x D-Sub port
2 x USB 3.0/2.0 ports
2 x USB 2.0/1.1 ports
1 x RJ-45 port
3 x audio jacks (Line In, Line Out, Mic In)
I/O Controller iTE®I/O Controller Chip
Hardware
Monitor
System voltage detection
CPU/System temperature detection
CPU/System fan speed detection
CPU/System overheating warning
CPU/System fan fail warning
CPU/System fan speed control
* Whether the fan speed control function is supported will depend on the cooler you
install.
BIOS 2 x 32 Mbit ash
Use of licensed AMI EFI BIOS
Support for DualBIOS™
PnP 1.0a, DMI 2.0, SM BIOS 2.6, ACPI 2.0a
Unique Features Support for Q-Flash
Support for Xpress Install
Support for APP Center
* Available applications in APP Center may differ by motherboard model. Supported
functions of each application may also differ depending on motherboard
specications.
- @BIOS
- EasyTune
- EZ Setup
- USB Blocker
- Smart TimeLock
- Smart Recovery 2
Support for ON/OFF Charge
Bundled
Software Norton®Internet Security (OEM version)
Operating
System Support for Windows 8.1/8/7
Form Factor Micro ATX Form Factor; 22.6cm x 17cm
* GIGABYTE reserves the right to make any changes to the product specications and product-related information without
prior notice.
* Please visit the Support & Downloads\Utility page on GIGABYTE's website to check the supported operating system(s)
for the software listed in the "Unique Features" and "Bundled Software" columns.

- 9 -
1-3 Installing the CPU
Read the following guidelines before you begin to install the CPU:
•Make sure that the motherboard supports the CPU.
(Go to GIGABYTE's website for the latest CPU support list.)
•Always turn off the computer and unplug the power cord from the power outlet before installing the
CPU to prevent hardware damage.
•Locate the pin one of the CPU. The CPU cannot be inserted if oriented incorrectly. (Or you may
locate the notches on both sides of the CPU and alignment keys on the CPU socket.)
•Apply an even and thin layer of thermal grease on the surface of the CPU.
•Do not turn on the computer if the CPU cooler is not installed, otherwise overheating and damage
of the CPU may occur.
•Set the CPU host frequency in accordance with the CPU specications. It is not recommended
that the system bus frequency be set beyond hardware specications since it does not meet the
standard requirements for the peripherals. If you wish to set the frequency beyond the standard
specications, please do so according to your hardware specications including the CPU, graphics
card, memory, hard drive, etc.
Installing the CPU
Locate the alignment keys on the motherboard CPU socket and the notches on the CPU.
Notch
Alignment KeyAlignment Key Notch
LGA1150 CPULGA1150 CPU Socket
Pin One Corner of the CPU Socket Triangle Pin One Marking on the CPU
Do not remove the CPU socket cover before inserting the CPU. It may pop off from the load plate
automatically during the process of re-engaging the lever after you insert the CPU.
1-4 Installing the Memory
DualChannelMemoryConguration
This motherboard provides two DDR3 memory sockets and supports Dual Channel Technology.After the memory
is installed, the BIOS will automatically detect the specications and capacity of the memory. Enabling Dual
Channel memory mode will double the original memory bandwidth.
The two DDR3 memory sockets are divided into two channels and each channel has one memory socket as
following:
Channel A: DDR3_1
Channel B: DDR3_2
Read the following guidelines before you begin to install the memory:
•Make sure that the motherboard supports the memory. It is recommended that memory of the
same capacity, brand, speed, and chips be used.
(Go to GIGABYTE's website for the latest supported memory speeds and memory modules.)
•Always turn off the computer and unplug the power cord from the power outlet before installing the
memory to prevent hardware damage.
•Memory modules have a foolproof design. A memory module can be installed in only one direction.
If you are unable to insert the memory, switch the direction.
Due to CPU limitations, read the following guidelines before installing the memory in Dual Channel mode.
1. Dual Channel mode cannot be enabled if only one DDR3 memory module is installed.
2. When enabling Dual Channel mode with two memory modules, it is recommended that memory of
the same capacity, brand, speed, and chips be used for optimum performance.

- 10 -
1-6 Back Panel Connectors
PS/2 Keyboard and PS/2 Mouse Port
Use the upper port (green) to connect a PS/2 mouse and the lower port (purple) to connect a PS/2 keyboard.
Parallel Port
Use the parallel port to connect devices such as a printer, scanner and etc. The parallel port is also called
a printer port.
Serial Port
Use the serial port to connect devices such as a mouse, modem or other peripherals.
D-Sub Port
The D-Sub port supports a 15-pin D-Sub connector and supports a maximum resolution of 1920x1200
(the actual resolutions supported depend on the monitor being used). Connect a monitor that supports
D-Sub connection to this port.
USB 3.0/2.0 Port
The USB 3.0 port supports the USB 3.0 specication and is compatible to the USB 2.0/1.1 specication.
Use this port for USB devices such as a USB keyboard/mouse, USB printer, USB ash drive and etc.
RJ-45 LAN Port
The Gigabit Ethernet LAN port provides Internet connection at up to 1 Gbps data rate. The following
describes the states of the LAN port LEDs.
USB 2.0/1.1 Port
The USB port supports the USB 2.0/1.1 specication. Use this port for USB devices such as a USB
keyboard/mouse, USB printer, USB ash drive and etc.
Line In Jack (Blue)
The default line in jack. Use this audio jack for line in devices such as an optical drive, walkman, etc.
1-5 Installing an Expansion Card
Read the following guidelines before you begin to install an expansion card:
•Make sure the motherboard supports the expansion card. Carefully read the manual that came
with your expansion card.
•Always turn off the computer and unplug the power cord from the power outlet before installing an
expansion card to prevent hardware damage.
•When removing the cable connected to a back panel connector, rst remove the cable from your
device and then remove it from the motherboard.
•When removing the cable, pull it straight out from the connector. Do not rock it side to side to prevent
an electrical short inside the cable connector.
Activity LED
Connection/
Speed LED
LAN Port
Activity LED:Connection/Speed LED:
State Description
Orange 1 Gbps data rate
Green 100 Mbps data rate
Off 10 Mbps data rate
State Description
Blinking Data transmission or receiving is occurring
Off No data transmission or receiving is occurring

- 11 -
1-7 Internal Connectors
Line Out Jack (Green)
The default line out jack. Use this audio jack for a headphone or 2-channel speaker. This jack can be used
to connect front speakers in a 4/5.1/7.1-channel audio conguration.
Mic In Jack (Pink)
The default Mic in jack. Microphones must be connected to this jack.
1 3
2
7
6
9 4 11 8
5
10
1) ATX_12V
2) ATX
3) CPU_FAN
4) SYS_FAN
5) BAT
6) SATA3 0/1
7) SATA2 2/3
8) F_PANEL
9) F_AUDIO
10) F_USB1/F_USB2
11) CLR_CMOS
To congure 7.1-channel audio, you have to use an HD front panel audio module and enable the
multi-channel audio feature through the audio driver.
Read the following guidelines before connecting external devices:
•First make sure your devices are compliant with the connectors you wish to connect.
•Before installing the devices, be sure to turn off the devices and your computer. Unplug the power
cord from the power outlet to prevent damage to the devices.
•After installing the device and before turning on the computer, make sure the device cable has
been securely attached to the connector on the motherboard.

- 12 -
CPU_FAN/SYS_FAN:
Pin No. Denition
1 GND
2 +12V
3 Sense
4 Speed Control
•Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheating. Overheating
may result in damage to the CPU or the system may hang.
•These fan headers are not conguration jumper blocks. Do not place a jumper cap on the headers.
SYS_FAN
CPU_FAN
DEBUG
PORT
G.QBOFM
1
DEBUG
PORT
G.QBOFM
1
ATX_12V:
Pin No. Denition
1 GND
2 GND
3 +12V
4 +12V
ATX_12V
DEBUG
PORT
G.QBOFM
131
2412
ATX
ATX:
Pin No. Denition Pin No. Denition
1 3.3V 13 3.3V
2 3.3V 14 -12V
3 GND 15 GND
4 +5V 16 PS_ON (soft On/Off)
5 GND 17 GND
6 +5V 18 GND
7 GND 19 GND
8 Power Good 20 NC
9 5VSB (stand by +5V) 21 +5V
10 +12V 22 +5V
11 +12V (Only for 2x12-pin
ATX)
23 +5V (Only for 2x12-pin ATX)
12 3.3V (Only for 2x12-pin
ATX)
24 GND (Only for 2x12-pin ATX)
1
3
2
4
1/2) ATX_12V/ATX (2x2 12V Power Connector and 2x12 Main Power Connector)
With the use of the power connector, the power supply can supply enough stable power to all the components
on the motherboard. Before connecting the power connector, rst make sure the power supply is turned
off and all devices are properly installed. The power connector possesses a foolproof design. Connect the
power supply cable to the power connector in the correct orientation.
The 12V power connector mainly supplies power to the CPU. If the 12V power connector is not connected,
the computer will not start.
To meet expansion requirements, it is recommended that a power supply that can withstand high power consumption
be used (500W or greater). If a power supply is used that does not provide the required power, the result can
lead to an unstable or unbootable system.
3/4) CPU_FAN/SYS_FAN (Fan Headers)
All fan headers on this motherboard are 4-pin. Most fan headers possess a foolproof insertion design.
When connecting a fan cable, be sure to connect it in the correct orientation (the black connector wire is
the ground wire). The speed control function requires the use of a fan with fan speed control design. For
optimum heat dissipation, it is recommended that a system fan be installed inside the chassis.

- 13 -
6) SATA3 0/1 (SATA 6Gb/s Connectors)
The SATA connectors conform to SATA 6Gb/s standard and are compatible with SATA 3Gb/s and SATA
1.5Gb/s standard. Each SATA connector supports a single SATA device.
7) SATA2 2/3 (SATA 3Gb/s Connectors)
The SATA connectors conform to SATA 3Gb/s standard and are compatible with SATA 1.5Gb/s standard.
Each SATA connector supports a single SATA device.
Pin No. Denition
1 GND
2 TXP
3 TXN
4 GND
5 RXN
6 RXP
7 GND
Pin No. Denition
1 GND
2 TXP
3 TXN
4 GND
5 RXN
6 RXP
7 GND
SATA3 1 0
SATA2 3 2
DEBUG
PORT
G.QBOFM
DEBUG
PORT
G.QBOFM
DEBUG
PORT
G.QBOFM
DEBUG
PORT
G.QBOFM
1
1
1
1
7
7
7
7
5) BAT (Battery)
The battery provides power to keep the values (such as BIOS congurations, date, and time information)
in the CMOS when the computer is turned off. Replace the battery when the battery voltage drops to a low
level, or the CMOS values may not be accurate or may be lost.
You may clear the CMOS values by removing the battery:
1. Turn off your computer and unplug the power cord.
2. Gently remove the battery from the battery holder and wait for one minute. (Or use a metal
object like a screwdriver to touch the positive and negative terminals of the battery holder,
making them short for 5 seconds.)
3. Replace the battery.
4. Plug in the power cord and restart your computer.
•Always turn off your computer and unplug the power cord before replacing the battery.
•Replace the battery with an equivalent one. Danger of explosion if the battery is replaced with an incorrect model.
•Contact the place of purchase or local dealer if you are not able to replace the battery by yourself or uncertain
about the battery model.
•When installing the battery, note the orientation of the positive side (+) and the negative side (-) of the battery
(the positive side should face up).
•Used batteries must be handled in accordance with local environmental regulations.

- 14 -
8) F_PANEL (Front Panel Header)
Connect the power switch, reset switch, speaker, and system status indicator on the chassis to this header
according to the pin assignments below. Note the positive and negative pins before connecting the cables.
•PW (Power Switch):
Connects to the power switch on the chassis front panel. You may
congure the way to turn off your system using the power switch
(refer to Chapter 2, "BIOS Setup," "Power Management," for more
information).
•SPEAK (Speaker):
Connects to the speaker on the chassis front panel. The system reports
system startup status by issuing a beep code. One single short beep
will be heard if no problem is detected at system startup.
•HD (Hard Drive Activity LED):
Connects to the hard drive activity LED on the chassis front panel. The
LED is on when the hard drive is reading or writing data.
•PLED/PWR_LED (Power LED):
System Status LED
S0 On
S3/S4/S5 Off
Connects to the power status indicator
on the chassis front panel. The LED is on
when the system is operating. The LED is
off when the system is in S3/S4 sleep state
or powered off (S5).
The front panel design may differ by chassis. A front panel module mainly consists of power switch, reset switch,
power LED, hard drive activity LED, speaker and etc. When connecting your chassis front panel module to this
header, make sure the wire assignments and the pin assignments are matched correctly.
9) F_AUDIO (Front Panel Audio Header)
The front panel audio header supports Intel High Denition audio (HD) and AC'97 audio. You may connect
your chassis front panel audio module to this header. Make sure the wire assignments of the module
connector match the pin assignments of the motherboard header. Incorrect connection between the module
connector and the motherboard header will make the device unable to work or even damage it.
1
2
9
10
For HD Front Panel Audio: ForAC'97 Front PanelAudio:
Pin No. Denition
1 MIC2_L
2 GND
3 MIC2_R
4 -ACZ_DET
5 LINE2_R
6 Sense
7 FAUDIO_JD
8 No Pin
9 LINE2_L
10 Sense
Pin No. Denition
1 MIC
2 GND
3 MIC Power
4 NC
5 Line Out (R)
6 NC
7 NC
8 No Pin
9 Line Out (L)
10 NC
•The front panel audio header supports HD audio by default.
•Audio signals will be present on both of the front and back panel audio connections simultaneously.
•Some chassis provide a front panel audio module that has separated connectors on each wire instead of a
single plug. For information about connecting the front panel audio module that has different wire assignments,
please contact the chassis manufacturer.
•RES (Reset Switch):
Connects to the reset switch on the chassis front panel. Press the reset switch to restart the computer if the
computer freezes and fails to perform a normal restart.
•CI (Chassis Intrusion Header):
Connects to the chassis intrusion switch/sensor on the chassis that can detect if the chassis cover has been
removed. This function requires a chassis with a chassis intrusion switch/sensor.
Power LED
1
2
19
20
CI-
CI+
PLED- PW- SPEAK+ SPEAK-
PLED+ PW+
Power LED
HD-
RES+
HD+
RES-
Hard Drive
Activity LED
Reset
Switch Chassis Intrusion
Header
Power Switch Speaker
F_USB30 F_U
B_ 
F_  F_ 

_
B
BS_
B
SB_
B
_S

S_
_
B
_U
_
B


 
S  
 
123
 
123
 
123
 
123
1
1
1
1
BSS
S
_S 
SSU
 
1 2 3 4 5
 S3 BSSS U
 __ 3
F_USB3F
S  _
S  _
S  _
SF


B_
F
_0
S
S
_0F
_F
_
_
__B


PWR_LED-
PWR_LED+
PWR_LED-

- 15 -
10) F_USB1/F_USB2 (USB 2.0/1.1 Headers)
The headers conform to USB 2.0/1.1 specication. Each USB header can provide two USB ports via an
optional USB bracket. For purchasing the optional USB bracket, please contact the local dealer.
11) CLR_CMOS (Clear CMOS Jumper)
Use this jumper to clear the BIOS conguration and reset the CMOS values to factory defaults. To clear
the CMOS values, use a metal object like a screwdriver to touch the two pins for a few seconds.
10
9
2
1
Pin No. Denition Pin No. Denition
1 Power (5V) 6 USB DY+
2 Power (5V) 7 GND
3 USB DX- 8 GND
4 USB DY- 9 No Pin
5 USB DX+ 10 NC
•Do not plug the IEEE 1394 bracket (2x5-pin) cable into the USB header.
•Prior to installing the USB bracket, be sure to turn off your computer and unplug the power cord from the power
outlet to prevent damage to the USB bracket.
•Always turn off your computer and unplug the power cord from the power outlet before clearing the CMOS values.
•After system restart, go to BIOS Setup to load factory defaults (select Load Optimized Defaults) or manually
congure the BIOS settings (refer to Chapter 2, "BIOS Setup," for BIOS congurations).
Open: Normal
Short: Clear CMOS Values

- 16 -
Chapter 2 BIOS Setup
2-1 Startup Screen
The following startup Logo screen will appear when the computer boots.
(Sample BIOS Version: Fa1)
Function Keys
•When the system is not stable as usual, select the Load Optimized Defaults item to set your system to its defaults.
•The BIOS Setup menus described in this chapter are for reference only and may differ by BIOS version.
•Because BIOS ashing is potentially risky, if you do not encounter problems using the current version of BIOS,
it is recommended that you not ash the BIOS. To ash the BIOS, do it with caution. Inadequate BIOS ashing
may result in system malfunction.
•It is recommended that you not alter the default settings (unless you need to) to prevent system instability or other
unexpected results. Inadequately altering the settings may result in system's failure to boot. If this occurs, try to
clear the CMOS values and reset the board to default values. (Refer to the "Load Optimized Defaults" section in
this chapter or introductions of the battery/clear CMOS jumper in Chapter 1 for how to clear the CMOS values.)
BIOS (Basic Input and Output System) records hardware parameters of the system in the CMOS on the
motherboard. Its major functions include conducting the Power-On Self-Test (POST) during system startup,
saving system parameters and loading operating system, etc. BIOS includes a BIOS Setup program that allows
the user to modify basic system conguration settings or to activate certain system features.
When the power is turned off, the battery on the motherboard supplies the necessary power to the CMOS to
keep the conguration values in the CMOS.
To access the BIOS Setup program, press the <Delete> key during the POST when the power is turned on.
To upgrade the BIOS, use either the GIGABYTE Q-Flash or @BIOS utility.
•Q-Flash allows the user to quickly and easily upgrade or back up BIOS without entering the operating system.
•@BIOS is a Windows-based utility that searches and downloads the latest version of BIOS from the Internet
and updates the BIOS.
On the main menu of the BIOS Setup program, press arrow keys to move among the items and press <Enter>
to accept or enter a sub-menu. Or you can use your mouse to select the item you want.

- 17 -
2-2 M.I.T.
Whether the system will work stably with the overclock/overvoltage settings you made is dependent on your overall
system congurations. Incorrectly doing overclock/overvoltage may result in damage to CPU, chipset, or memory
and reduce the useful life of these components. This page is for advanced users only and we recommend you not to
alter the default settings to prevent system instability or other unexpected results. (Inadequately altering the settings
may result in system's failure to boot. If this occurs, clear the CMOS values and reset the board to default values.)
This section provides information on the BIOS version, CPU base clock, CPU frequency, memory frequency,
total memory size, CPU temperature, Vcore, and memory voltage.
`M.I.T. Current Status
This screen provides information on CPU/memory frequencies/parameters.
`Advanced Frequency Settings
&Performance Upgrade (Note)
Provides you with ve different overclocking congurations. Options are: 20% Upgrade, 40% Upgrade,
60% Upgrade, 80% Upgrade, 100% Upgrade. (Default: Auto)
&Processor Graphics Clock
Allows you to set the onboard graphics clock. The adjustable range is from 400 MHz to 4000 MHz. (Default:
Auto)
&CPU Clock Ratio
Allows you to alter the clock ratio for the installed CPU. The adjustable range is dependent on the CPU
being installed.
&CPU Frequency
Displays the current operating CPU frequency.
`Advanced CPU Core Features
&CPU Clock Ratio, CPU Frequency
The settings above are synchronous to those under the same items on the Advanced Frequency Settings
menu.
(Note) This item is present only when you install a CPU that supports this feature. For more information about
Intel®CPUs' unique features, please visit Intel's website.

- 18 -
(Note) This item is present only when you install a CPU that supports this feature. For more information about
Intel®CPUs' unique features, please visit Intel's website.
&K OC (Note)
Allows for increased performance by using certain CPUs. (Default: Auto)
&CPU PLL Selection
Allows you to set the CPU PLL. Auto lets the BIOS automatically congure this setting. (Default: Auto)
&Filter PLL Level
Allows you to set the Filter PLL. Auto lets the BIOS automatically congure this setting. (Default: Auto)
&Uncore Ratio
Allows you to set the CPU Uncore ratio. The adjustable range is dependent on the CPU being used.
&Uncore Frequency
Displays the current CPU Uncore frequency.
&Intel(R) Turbo Boost Technology (Note)
Allows you to determine whether to enable the Intel CPU Turbo Boost technology. Auto lets the BIOS
automatically congure this setting. (Default: Auto)
&Turbo Ratio (1-Core Active~4-Core Active) (Note)
Allows you to set the CPU Turbo ratios for different number of active cores. Auto sets the CPU Turbo ratios
according to the CPU specications. (Default: Auto)
&Turbo Power Limit (Watts)
Allows you to set a power limit for CPU Turbo mode. When the CPU power consumption exceeds the
specied power limit, the CPU will automatically reduce the core frequency in order to reduce the power.
Auto sets the power limit according to the CPU specications. (Default: Auto)
&Core Current Limit (Amps)
Allows you to set a current limit for CPU Turbo mode. When the CPU current exceeds the specied current
limit, the CPU will automatically reduce the core frequency in order to reduce the current. Auto sets the
power limit according to the CPU specications. (Default: Auto)
&No. of CPU Core Enabled (Note)
Allows you to select the number of CPU cores to enable in an Intel®multi-core CPU (the number of CPU
cores may vary by CPU). Auto lets the BIOS automatically congure this setting. (Default: Auto)
&Hyper-Threading Technology (Note)
Allows you to determine whether to enable multi-threading technology when using an Intel®CPU that
supports this function. This feature only works for operating systems that support multi-processor mode.
Auto lets the BIOS automatically congure this setting. (Default: Auto)
&CPU Enhanced Halt (C1E) (Note)
Enables or disables Intel®CPU Enhanced Halt (C1E) function, a CPU power-saving function in system
halt state. When enabled, the CPU core frequency and voltage will be reduced during system halt state to
decrease power consumption. Auto lets the BIOS automatically congure this setting. (Default: Auto)
&C3 State Support (Note)
Allows you to determine whether to let the CPU enter C3 mode in system halt state. When enabled, the
CPU core frequency and voltage will be reduced during system halt state to decrease power consumption.
The C3 state is a more enhanced power-saving state than C1. Auto lets the BIOS automatically congure
this setting. (Default: Auto)
&C6/C7 State Support (Note)
Allows you to determine whether to let the CPU enter C6/C7 mode in system halt state. When enabled, the
CPU core frequency and voltage will be reduced during system halt state to decrease power consumption.
The C6/C7 state is a more enhanced power-saving state than C3. Auto lets the BIOS automatically congure
this setting. (Default: Auto)
&CPU Thermal Monitor (Note)
Enables or disables Intel®Thermal Monitor function, a CPU overheating protection function. When enabled,
the CPU core frequency and voltage will be reduced when the CPU is overheated. Auto lets the BIOS
automatically congure this setting. (Default: Auto)

- 19 -
(Note 1) This item is present only when you install a CPU that supports this feature. For more information about
Intel®CPUs' unique features, please visit Intel's website.
(Note 2) This item is present only when you install a CPU and a memory module that support this feature.
`Advanced Memory Settings
&ExtremeMemoryProle(X.M.P.)(Note 2), System Memory Multiplier, Memory Frequency(MHz)
The settings above are synchronous to those under the same items on the Advanced Frequency Settings
menu.
&Memory Boot Mode
Provides memory detection and training methods.
Auto Lets BIOS automatically congure this setting. (Default)
Normal Standard detection and training.
Fast Skip memory detection and training in some specic criteria for faster memory boot.
Coldboot Detect and train memory at every single boot.
&Memory Enhancement Settings
Provides three different memory performance enhancement settings: Normal (basic performance), Enhanced
Stability, and Enhanced Performance. (Default: Normal)
&Memory Timing Mode
Manual and Advanced Manual allows the Channel Interleaving, Rank Interleaving, and memory timing
settings below to be congurable. Options are: Auto (default), Manual, Advanced Manual.
&ProleDDRVoltage
When using a non-XMP memory module or ExtremeMemoryProle(X.M.P.) is set to Disabled, this item
will display as 1.50V. When ExtremeMemoryProle(X.M.P.) is set to Prole1 or Prole2, this item will
display the value based on the SPD data on the XMP memory.
&Channel Interleaving
Enables or disables memory channel interleaving. Enabled allows the system to simultaneously access
different channels of the memory to increase memory performance and stability. Auto lets the BIOS
automatically congure this setting. (Default: Auto)
&Rank Interleaving
Enables or disables memory rank interleaving. Enabled allows the system to simultaneously access different
ranks of the memory to increase memory performance and stability. Auto lets the BIOS automatically
congure this setting. (Default: Auto)
&CPU EIST Function (Note 1)
Enables or disables Enhanced Intel®Speed Step Technology (EIST). Depending on CPU loading, Intel
EIST technology can dynamically and effectively lower the CPU voltage and core frequency to decrease
average power consumption and heat production. Auto lets the BIOS automatically congure this setting.
(Default: Auto)
&ExtremeMemoryProle(X.M.P.)(Note 2)
Allows the BIOS to read the SPD data on XMP memory module(s) to enhance memory performance when
enabled.
Disabled Disables this function. (Default)
Prole1 Uses Prole 1 settings.
Prole2 (Note 2) Uses Prole 2 settings.
&System Memory Multiplier
Allows you to set the system memory multiplier. Auto sets memory multiplier according to memory SPD
data. (Default: Auto)
&Memory Frequency (MHz)
The rst memory frequency value is the normal operating frequency of the memory being used; the second
is the memory frequency that is automatically adjusted according to the System Memory Multiplier settings.

- 20 -
`PC Health Status
&Reset Case Open Status
Disabled Keeps or clears the record of previous chassis intrusion status. (Default)
Enabled Clears the record of previous chassis intrusion status and the Case Open eld will
show "No" at next boot.
&Case Open
Displays the detection status of the chassis intrusion detection device attached to the motherboard CI
header. If the system chassis cover is removed, this eld will show "Yes", otherwise it will show "No". To
clear the chassis intrusion status record, set Reset Case Open Status to Enabled, save the settings to
the CMOS, and then restart your system.
&CPU Vcore/CPU VRIN/Dram Voltage/+3.3V/+5V/+12V/CPU VAXG
Displays the current system voltages.
&CPU/System Temperature
Displays current CPU/system temperature.
&CPU/System Fan Speed
Displays current CPU/system fan speeds.
&CPU/System Temperature Warning
Sets the warning threshold for CPU/system temperature. When CPU temperature exceeds the threshold,
BIOS will emit warning sound. Options are: Disabled (default), 60oC/140oF, 70oC/158oF, 80oC/176oF,
90oC/194oF.
&CPU/System Fan Fail Warning
Allows the system to emit warning sound if the fan is not connected or fails. Check the fan condition or fan
connection when this occurs. (Default: Disabled)
&CPU Fan Speed Control
Allows you to determine whether to enable the fan speed control function and adjust the fan speed.
Normal Allows the fan to run at different speeds according to the CPU temperature. You can
adjust the fan speed with EasyTune based on your system requirements. (Default)
Silent Allows the fan to run at slow speeds.
Manual Allows you to control the fan speed under the Fan Speed Percentage item.
Full Speed Allows the fan to run at full speeds.
&Fan Speed Percentage
Allows you to control the CPU fan speed. This item is congurable only when CPU Fan Speed Control is
set to Manual. Options are: 0.75 PWM value /oC ~ 2.50 PWM value /oC.
&System Fan Speed Control
Allows you to determine whether to enable the fan speed control function and adjust the fan speed.
Normal Allows the fan to run at different speeds according to the system temperature. You can
adjust the fan speed with EasyTune based on your system requirements. (Default)
Silent Allows the fan to run at slow speeds.
Manual Allows you to control the fan speed under the Fan Speed Percentage item.
Full Speed Allows the fan to run at full speeds.
`Channel A/B Memory Sub Timings
This sub-menu provides memory timing settings for each channel of memory. This sub-menu provides memory
timing settings for each channel of memory. The respective timing setting screens are congurable only when
Memory Timing Mode is set to Manual or Advanced Manual. Note: Your system may become unstable or fail
to boot after you make changes on the memory timings. If this occurs, please reset the board to default values
by loading optimized defaults or clearing the CMOS values.
`Advanced Voltage Settings
This sub-menu allows you to set CPU, chipset and memory voltages.