Gigabyte Ga-z97x-gaming 5 Manual

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17) CLR_CMOS (Clear CMOS Jumper) 	 Use	 this	jumper	 to	clear	 the	BIOS	 configuration	 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
16) 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.
Hardware Installation  
						

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Hardware Installation  
						

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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	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	need	 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/clear	
CMOS	jumper	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. Startup Guide (Default)
The	Startup	 Guide	screen	 simplifies	 conventional	 complicated	BIOS	setup	 menus	 and	presents	 only	the	most	
frequently	 used	options	 in	the	 easy-to-use	 interface.	It	helps	 first-time	 users	to	perform	 basic	system	 setups	
more quickly and easily.
B. ST Mode (Smart Tweak Mode)
Differing from traditional UEFI interface, the ST Mode provides a fancy and user-friendly BIOS environment 
where users can easily point and click through various settings and make adjustments for optimum performance. 
In	ST 	Mode,	 you	can	use	your	 mouse	 to	move	 through	 the	option	 menus	 for	quick	 configuration	 or	press	 	
to switch to the traditional BIOS Setup screen.
 •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.
BIOS Setup  
						

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Setup Menus
Function Keys
Help
Enter Q-FlashSelect Default Language
Configuration	ItemsCurrent Settings
C. Classic Setup
Classic Setup is the conventional BIOS Setup interface where 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 item you want.
(Sample BIOS Version: F2d)
Switch to ST Mode
Classic Setup Function Keys
Move the selection bar to select a setup menu
Move	the	selection	bar	to	select	an	configuration	item	on	a	menu
Execute command or enter a menu
/Increase the numeric value or make changes
/Decrease the numeric value or make changes
Switch to ST Mode or Startup Guide screen.
Restore the previous BIOS settings for the current submenus
Load	the	Optimized	BIOS	default	settings	for	the	current	submenus
Access the Q-Flash utility
Display system information
Save all the changes and exit the BIOS Setup program
Capture the current screen as an image and save it to your USB drive
Main Menu: Exit the BIOS Setup program  
Submenus: Exit current submenu
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 Information
	 Use	this	menu	to	 configure	the	default	language	used	by	the	BIOS	and	system	time 	and	date.
 „BIOS Features
	 Use	this	menu	to	configure	the	device	boot	order	and	advanced	features	available	on	the	CPU.
 „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. 	
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.
BIOS Setup   
						

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 `M.I.T. Current Status 
 This screen provides information on CPU/memory frequencies/parameters.
 `Advanced Frequency Settings 
 &Performance Upgrade (Note)
	 Provides	 you	with	 five	different	 overclocking	 configurations.	 Options	are:	20%	 Upgrade,	 40%	Upgrade,	
60%	Upgrade,	80%	Upgrade,	100%	Upgrade.	(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 set to Manual.
 &Spread Spectrum Control (Note)
	 Enables	or	disables	CPU/PCIe	Spread	Spectrum.	(Default:	 Auto)
 &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)
(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.
 `Advanced CPU Core Settings 
 &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.
 &CPU Frequency
 Displays the current operating CPU frequency.
 &CPU Clock Ratio, CPU Frequency
 The settings above are synchronous to those under the same items on the \
Advanced Frequency Settings 
menu.
 &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	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)
BIOS Setup