Gigabyte Sniper 5 Manual

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14) BAT (Battery)
	 The	 battery	provides	 power	to	keep	 the	values	 (such	as	BIOS	 configurations,	 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 minut\
e. (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 rep\
lace 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 re\
gulations.
13) F_USB1/F_USB2 (USB 2.0/1.1 Headers)
	 The	 headers	conform	to	USB	 2.0/1.1	 specification.	 Each	USB	header	 can	provide	 two	USB	 ports	 via	an	
optional USB bracket. For purchasing the optional USB bracket, please co\
ntact the local dealer.DEBUG 
PORT
G.QBOFM
10921
Pin No.Definition
1Power	(5V)
2Power	(5V)
3USB	DX-
4USB DY-
5USB	DX+
6USB DY+
7GND
8GND
9No Pin
10NC
 •Do	not	plug	the	IEEE	1394	bracket	(2x5-pin)	cable	into	the	USB	2.0/1.1	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.
Hardware Installation  
						

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15) CLR_CMOS (Clear CMOS Jumper)
	 Use	 this	jumper	 to	clear	 the	BIOS	 configurations	 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.
 •Always turn off your computer and unplug the power cord from the power outlet before c\
learing 
the CMOS values.
 •After	 system	 restart,	go	to	BIOS	 Setup	 to	load	 factory	 defaults	 (select	Load	Optimized	 Defaults)	or	
manually	 configure	 the	BIOS	 settings	 (refer	to	Chapter	 2,	"BIOS	 Setup,"	 for	BIOS	 configurations).
Open: Normal
Short: Clear CMOS Values 
Hardware Installation  
						

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BIOS (Basic Input and Output System) records hardware parameters of th\
e 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 configuration 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 configuration values in the CMOS.
To access the BIOS Setup program, press the  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 wi\
thout 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.
For instructions on using the Q-Flash and @BIOS utilities, refer to Chap\
ter 5, "BIOS Update Utilities."
Chapter 2 BIOS Setup
 •Because  BIOS  flashing  is  potentially  risky,  if  you  do  not  encounter  problems  using  the  current 
version  of  BIOS,  it  is  recommended  that  you  not  flash  the  BIOS.  To  flash  the  BIOS,  do  it  with 
caution. Inadequate BIOS flashing may result in system malfunction.
 •It is recommended that you not alter the default settings (unless you n\
eed to) to prevent system 
instability or other unexpected results. Inadequately altering the settings may resu\
lt 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 or the 
clear CMOS jumper/button in Chapter 1 for how to clear the CMOS values.)\
BIOS Setup  
						

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2-1 Startup Screen
The following startup Logo screen will appear when the computer boots.
Function Keys:
: BIOS SETUP\Q-FLASH
 Press the  key to enter BIOS Setup or to access the Q-Flash utility in BIOS Setup.
: SYSTEM INFORMATION
 Press the  key to display your system information.
: BOOT MENU
 Boot Menu allows you to set the first boot device without entering BIOS Setup. In Boot Menu, use the up 
arrow key  or the down arrow key  to select the first boot device, then press  to accept. 
The system will boot from the device immediately.
 Note: The setting in Boot Menu is effective for one time only. After system restart, the device boot order 
will still be based on BIOS Setup settings.
: Q-FLASH
 Press the  key to access the Q-Flash utility directly without having to enter BIOS Setup first.
Function Keys
BIOS Setup  
						

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2-2 The Main Menu
A. Windows Mode (Default) 
Differing from traditional UEFI interface, the Windows mode provides a fanc\
y and user-friendly BIOS environment 
where users can easily point and click through various settings and make adjustments for optimum performance. 
In Windows Mode, you can use your mouse to move through the option menus for quick configuration or you 
can click Classic Setup under the Shortcuts list on the right of the screen or press  to switch to the 
traditional BIOS Setup screen.
B. Classic Setup  
In Classic Setup, you can press the arrow keys on your keyboard to move among the items and press  
to accept or enter a sub-menu. Or you can use your mouse to select the i\
tem you want.
(Sample BIOS Version: F4a)
Setup Menus
Function Keys
Help
Enter Q-FlashSelect DefaultLanguage
Configuration ItemsCurrent Settings
Switch to Windows Mode 
BIOS Setup  
						

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BIOS Setup Menus
 „M.I.T.
 Use this menu to configure the clock, frequency, and voltages of your CPU and memory, etc. Or check the 
system/CPU temperatures, voltages, and fan speeds.
 „System
 Use this menu to configure the default language used by the BIOS and system time and date. This menu 
also displays information on the devices connected to the SATA ports.
 „BIOS Features
 Use this menu to configure the device boot order, advanced features available on the CPU, and the primary 
display adapter.
 „Peripherals
 Use this menu to configure all peripheral devices, such as SATA, USB, integrated audio, and integrated 
LAN, etc.
 „Power Management
 Use this menu to configure all the power-saving functions.
 „Save & Exit
 Save all the changes made in the BIOS Setup program to the CMOS and exit BIOS Setup. You can save 
the current BIOS settings to a profile or load optimized defaults for optimal-performance system operations. 
 •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.
Classic Setup Function KeysMove the selection bar to select a setup menuMove the selection bar to select an configuration item on a menuExecute command or enter a menu/Increase the numeric value or make changes/Decrease the numeric value or make changesSwitch to Windows ModeRestore the previous BIOS settings for the current submenusLoad the Optimized BIOS default settings for the current submenusAccess the Q-Flash utilityDisplay system informationSave all the changes and exit the BIOS Setup programCapture the current screen as an image and save it to your USB driveMain Menu: Exit the BIOS Setup program  
Submenus: Exit current submenu
BIOS Setup  
						

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2-3 M.I.T.
Whether the system will work stably with the overclock/overvoltage settings you made is dependent 
on your overall system configurations. 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.
BIOS Setup  
						

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 `Advanced Frequency Settings 
 &Performance Boost (Note)
 Provides  you  with  five  different  overclocking  configurations.  Options  are:  Medium,  High,  Turbo,  Ultra, 
Extreme. (Default: Auto)
 &CPU Base Clock
 Allows you to manually set the CPU base clock in 0.01 MHz increments. (Default: Auto)
 Important: It is highly recommended that the CPU frequency be set in accordance with the CPU 
specifications.
 &Host/PCIe Clock Frequency (Note)
 Allows you to manually set the host clock frequency (which controls CPU, PCIe, and memory frequencies) 
in 0.01 MHz increments.  This item is configurable only when CPU Base Clock is set to Manual.
 &Processor Base Clock (Gear Ratio) (Note)
 Allows you to configure the Processor Base Clock by multiplying the Host/PCIe Clock Frequency by 
several preset host clock multipliers. This item is configurable only when CPU Base Clock is enabled.
 &Host Clock Value
 This value is determined by multiplying the Host/PCIe Clock Frequency value by the Processor Base 
Clock(Gear Ratio) value.
 &Processor Graphics Clock
 Allows you to set the onboard graphics clock. The adjustable range is from 400 MHz to 4000 MHz. (Default: 
Auto)
 &CPU Upgrade (Note)
 Allows you to set the CPU frequency. Options may vary depending on the CPU being used. (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.
(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.
BIOS Setup  
						

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(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.
 &CPU Clock Ratio, CPU Frequency
 The settings above are synchronous to those under the same items on the \
Advanced Frequency Settings 
menu.
 &CPU PLL Selection 
 Allows you to set the CPU PLL. Auto lets the BIOS automatically configure this setting. (Default: Auto)
 &Filter PLL Level 
 Allows you to set the Filter PLL. Auto lets the BIOS automatically configure 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 configure 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 specifications. (Default: Auto)
 &Turbo Power Limit (Watts)
 Allows you to set a power limit for CPU Turbo mode. When the CPU power consumption exceeds the 
specified 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 specifications. (Default:  Auto)
 `Advanced CPU Core Features 
 &CPU Frequency
 Displays the current operating CPU frequency.
BIOS Setup  
						

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 &Core Current Limit (Amps)
 Allows you to set a current limit for CPU Turbo mode. When the CPU current exceeds the specified 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 specifications. (Default: Auto)
 &CPU Core Enabled (Note 1)
 Allows you to determine whether to enable all CPU cores. Auto lets the BIOS automatically configure this 
setting. (Default: Auto)
 &Hyper-Threading Technology (Note 1)
 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 configure this setting. (Default: Auto)
 &CPU Enhanced Halt (C1E) (Note 1)
 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 configure this setting. (Default: Auto)
 &C3/C6 State Support (Note 1)
 Allows you to determine whether to let the CPU enter C3/C6 mode in system halt state. When enabled, the 
CPU core frequency and voltage will be reduced during system halt state to d\
ecrease power consumption. 
The C3/C6 state is a more enhanced power-saving state than C1. Auto lets the BIOS automatically configure 
this setting. (Default: Auto)
 &CPU Thermal Monitor (Note 1)
 Enables or disables Intel® CPU 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 configure this setting. (Default: Auto)
 &CPU EIST Function (Note 1)
 Enables or disables Enhanced Intel® SpeedStep 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 configure this setting. 
(Default: Auto)
 &Extreme Memory Profile (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)
 Profile1   Uses Profile 1 settings.
 Profile2 (Note 2) Uses Profile 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 first 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.
(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.
BIOS Setup