Gigabyte Z97n Gaming 5 Manual

							BIOS Setup- 31 -
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.
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 setti\
ngs 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.)  
						

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2-1  Startup ScreenThe 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.  
						

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Setup Menus
Function Keys
Help
Enter Q-FlashSelect Default Language
Configuration	ItemsCurrent Settings
C. Classic SetupClassic 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: F1)
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  
						

							BIOS Setup- 35 -
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. 	  
						

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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  
						

							BIOS Setup- 37 -
 `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.  
						

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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  
						

							BIOS Setup- 39 -
(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.
 &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)
 &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)
 &No. of CPU Cores 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	configure	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	configure	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 red\
uced during system halt state to decrease power consumption. Auto	lets	the	BIOS	automatically	configure	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 d\
ecrease power consumption. The C3 state is a more enhanced power-saving state than C1. Auto	lets	 the	BIOS	 automatically	 configure	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 d\
ecrease power consumption. The C6/C7 state is a more enhanced power-saving state than C3. Auto	lets	 the	BIOS	 automatically 	configure 	this	setting.	(Default:	 Auto)
 &CPU Thermal Monitor (Note)
 Enables or disables Intel® Thermal Monitor function, a CPU overheating protection function. When en\
abled, 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)
 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	 configure	this	setting.	(Default:	 Auto)  
						

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 `Advanced Memory Settings
 &Extreme	Memory	Profile	(X.M.P.)	(Note)
	 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)	 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.
 &Extreme	 Memory	Profile	(X.M.P.)	(Note), System Memory Multiplier, Memory Frequency(MHz) The settings above are synchronous to those under the same items on the \
Advanced Frequency Settings menu.
 &Memory	Overclocking	Profiles	(Note)
	 Allows	 you	to	set	 the	 memory	 frequency.	 Options	may	vary	depending	 on	the	 memory	 being	used.	(Default:	Disabled)
 &Memory Boot Mode Provides memory detection and training methods. Auto	 	 	 	 Lets	the	BIOS	automatically	configure	this	setting.	(Default) Enable	Fast	Boot	 	
Skip	memory	 detection 	and	 training	 in	some	 specific	 criteria	for	faster	 memory	boot. Disable Fast Boot  Detect and train memory at every single boot.
(Note)	 This	item	is	present	only	when	you 	install	a	CPU	and	a	memory	module	that	support	this	feature.
BIOS Setup