Gigabyte Z97n Gaming 5 Manual

							BIOS Setup- 41 -
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	configurable	 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.
 `Channel A/B Memory Sub Timings
 &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	configurable.	Options	are:	 Auto	(default),	Manual,	Advanced	Manual.
 &Profile	DDR	Voltage	 When	using	a	non-XMP 	memory	 module	or	Extreme	 Memory	Profile	(X.M.P.) is set to Disabled, the value	is	displayed	 according	 to	your	 memory	 specification.	 When	Extreme	 Memory	Profile	(X.M.P.)	 is	set	to Profile1 or Profile2,	the	value	is	displayed	according	to	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	configure	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 configure	this	setting.	(Default:	 Auto)  
						

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 `Advanced Voltage Settings
This sub-menu allows you to set CPU, chipset and memory voltages.
BIOS Setup  
						

							BIOS Setup- 43 -
 `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	field	 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	field	 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 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	fan	speed.	 This	item	is	configurable	 only	when	CPU Fan Speed Control is set to Manual. Options are: 0.75 PWM value /oC ~ 2.50 PWM value /oC.  
						

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 `Miscellaneous Settings
 &PCIe	Slot	Configuration Allows you to set the operation mode of the PCI Express slots to Gen 1, Gen 2, or Gen 3. Actual operation mode	 is	subject	 to	the	 hardware	 specification 	of	 each	 slot.	Auto	lets	 the	BIOS	 automatically	 configure	this	setting.	(Default:	 Auto)
 &DMI Gen2 Speed	 Allows	you	to	configure	the	DMI	link	speed. Auto	 	 	 Lets	the	BIOS	automatically	configure	this	setting. Enabled	 	 Sets	the	DMI	link	speed	to	Gen	2.	(Default) Disabled   Sets the DMI link speed to Gen 1.
 &3DMark01 Boost	 Allows	you	to	determine	whether	to	enhance	some	legacy	benchmark	performance. 	(Default:	Disabled)
 &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.
 &Fan Speed Percentage	 Allows	you	to	control	 the	fan	speed.	 This	item	is	configurable	 only	when	System Fan Speed Control is set to Manual. Options are: 0.75 PWM value /oC ~ 2.50 PWM value /oC.
BIOS Setup  
						

							BIOS Setup- 45 -
2-4 System Information
This section provides information on your motherboard model and BIOS version. You can also select the default language used by the BIOS and manually set the system time.
 &System Language Selects the default language used by the BIOS.
 &System Date	 Sets	the	system	 date.	The	date	format	is	week	(read-only),	month,	date,	and	year.	Use		to	switch	between	 the	Month,	 Date,	and	Year	 fields	 and	use	the		or		 key	to	set	 the	 desired	value.
 &System Time  Sets the system time. The time format is hour, minute, and second. For example, 1 p.m. is 13:0:0. Use 	 to	switch	 between	 the	Hour,	 Minute,	 and	Second	 fields	and	use	the		or		key to set the desired value.
 &Access Level	 Displays	 the	current	 access	 level	depending	 on	the	 type	 of	password	 protection	 used.	(If	no	 password	 is	set, the default will display as Administrator.)	The	 Administrator	 level	allows	 you	to	make	 changes	 to	all	BIOS	settings;	the	User	level	only	allows	you	to	make	changes	to	certain	BIOS	settings	but	not	all.  
						

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2-5 BIOS Features
 &Boot Option Priorities	 Specifies	the	overall	boot	order	from	the 	available	devices.	 Removable	storage	devices	 that	support	 GPT	format	 will	be	prefixed	 with	"UEFI:"	 string	on	the	 boot	 device	list.	To	boot	 from	 an	operating	 system	that	supports	 GPT	partitioning,	 select	the	device	 prefixed	 with	"UEFI:" 	string.
 Or if you want to install an operating system that supports GPT partitioning such as Windows 7 64-bit, select the	optical	drive	that	contains	the	Windows	7	64-bit	installation	disk	and	is	prefixed	with	"UEFI:"	string.
 &Bootup NumLock State	 Enables	 or	disables	 Numlock	 feature	on	the	 numeric	 keypad	of	the	 keyboard	 after	the	POST.	 (Default:	Enabled)
BIOS Setup  
						

							BIOS Setup- 47 -
 &Security Option	 Specifies	whether	a	 password	 is	required	 every	time	the	system	 boots,	or	only	 when	 you	enter 	BIOS 	Setup.	After	 configuring	 this	item,	 set	the	 password(s)	 under	the	Administrator Password/User Password item. Setup          A password is only required for entering the BIOS Setup program. System       A password is required for booting the system and for entering the BIOS Setup program.	(Default)
 &Full Screen LOGO Show Allows you to determine whether to display the GIGABYTE Logo at system s\
tartup. Disabled skips the GIGABYTE	Logo	when	the	system	starts	up.	(Default:	Enabled)
 &Fast Boot Enables or disables Fast Boot to shorten the OS boot process. Ultra Fast provides the fastest bootup speed.	(Default:	Disabled)
 &VGA Support Allows you to select which type of operating system to boot. Auto        Enables legacy option ROM only. EFI	Driver	 	 	 Enables	EFI	option	ROM.	(Default)	 This	item	is	configurable	only	when	Fast Boot is set to Enabled or Ultra Fast.
 &USB Support Disabled     All USB devices are disabled before the OS boot process completes. Full Initial     All USB devices are functional in the operating system and during the POST. Partial Initial     Part of the USB devices are disabled before the OS boot process completes. (Default)	 This	item	is	configurable	 only	when	Fast Boot is set to Enabled. This item is disabled when Fast Boot is set to Ultra Fast.
 &PS2 Devices Support Disabled      All PS/2 devices are disabled before the OS boot process completes. Enabled       All PS/2 devices are functional in the operating system and during the POST. (Default)	 This	item	is	configurable	 only	when	Fast Boot is set to Enabled. This item is disabled when Fast Boot is set to Ultra Fast.
 &NetWork Stack Driver Support Disabled	 	 	 Disables	booting	from	the	network.	(Default) Enabled      Enables booting from the network.	 This	item	is	configurable	only	when	Fast Boot is set to Enabled or Ultra Fast.
 &Next Boot After AC Power Loss Normal	Boot	 	 Enables	normal	bootup 	upon	the	return	of	the	AC	power.	(Default) Fast Boot     Keeps the Fast Boot settings upon the return of the AC power.	 This	item	is	configurable	only	when	Fast Boot is set to Enabled or Ultra Fast.
 &Limit CPUID Maximum (Note)
 Allows you to determine whether to limit CPUID maximum value. Set this item to Disabled	for	 Windows	 XP	operating	 system;	set	this	 item	 to	Enabled	for	 legacy	 operating	 system	such	as	Windows	 NT4.0.	(Default:	Disabled)
(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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 &Execute Disable Bit (Note)
 Enables or disables Intel® Execute Disable Bit function. This function may enhance protection for the computer,	 reducing	exposure	 to	viruses	 and	malicious	 buffer	overflow	 attacks	when	working	 with	its	supporting	software	and	system.	(Default:	Enabled)
 &Intel Virtualization Technology (Note)
  Enables or disables Intel®	Virtualization	 Technology.	Virtualization	 enhanced	by	Intel®	Virtualization 	Technology will allow a platform to run multiple operating systems and applications in independent partitions. With	virtualization,	one	computer	system	can	function	as	multiple	virtual	systems.	(Default:	Enabled)
 &Intel TXT(LT) Support (Note)
 Enables or disables Intel®	Trusted	 Execution	 Technology	 (Intel®	TXT).	 Intel® Trusted Execution Technology provides	a	hardware-based	security	foundation.	(Default:	Disabled)
 &Dynamic Storage Accelerator Enables or disables Intel® Dynamic Storage Accelerator. When enabled, the hard drive I/O performance will	be	adjusted	according	to	hard	drive	load.	(Default:	Disabled)
 &VT-d (Note)
 Enables or disables Intel®	Virtualization	 Technology	for	Directed	I/O.	(Default:	Enabled)
 &Windows 8 Features	 Allows	you	to	select	the	operating	system	to	be	installed.	(Default:	Other	OS)
 &CSM Support	 Enables	or	disables	UEFI	CSM	(Compatibility	Support	Module)	to	support	a	legacy	PC	boot	process. Always	 	 	 Enables	UEFI	CSM.	(Default) Never        Disables UEFI CSM and supports UEFI BIOS boot process only.	 This	item	is	configurable	only	when	Windows 8 Features is set to Windows 8.
 &Boot Mode Selection Allows you to select which type of operating system to boot. UEFI and Legacy    Allows booting from operating systems that support legacy option ROM or \
UEFI option	ROM.	(Default) Legacy Only   Allows booting from operating systems that only support legacy Option ROM. UEFI Only     Allows booting from operating systems that only support UEFI Option ROM.	 This	item	is	configurable	only	when	CSM Support is set to Always.
 &LAN PXE Boot Option ROM	 Allows	you	to	select	whether	to	enable	the	legacy	option	ROM	for	the	LAN	controller.	(Default:	Disabled)	 This	item	is	configurable	only	when	CSM Support is set to Always.
 &Storage Boot Option Control Allows you to select whether to enable the UEFI or legacy option ROM for the storage device controller. Disabled      Disables option ROM. Legacy	only	 	 Enables	legacy	option	 ROM	only.	(Default) UEFI only     Enables UEFI option ROM only. Legacy	First	 	 Enables	legacy	option	 ROM	first. UEFI	First	 	 	 Enables	UEFI	option	ROM	first.	 This	item	is	configurable	only	when	CSM Support is set to Always.
(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  
						

							BIOS Setup- 49 -
 &Administrator Password	 Allows	you	to	configure	 an	administrator	 password.	Press		 on	this	 item,	 type	the	password,	 and	then	press	 .	 You	will	be	requested	 to	confirm	 the	password.	 Type	the	password	 again	and	press	.	 You	must	 enter	the	 administrator	 password	(or	user	 password)	 at	system	 startup	and	when	 entering 	BIOS Setup. Differing from the user password, the administrator password allows you to \
make changes to all BIOS settings.
 &User Password	 Allows	 you	to	configure	 a	user	 password.	 Press		 on	this	 item,	 type	the	password,	 and	then	 press	.	 You	will	be	requested	 to	confirm	 the	password.	 Type	the	password	 again	and	press	 .	You	must	 enter	 the	administrator	 password	(or	user	 password)	 at	system	 startup	and	when	 entering	 BIOS	Setup. However, the user password only allows you to make changes to certain BIOS settings but not all.
 To cancel the password, press  on the password item and when reque\
sted for the password, enter the	correct	 one	first.	 When	 prompted	 for	a	new	 password,	 press		 without	entering	 any	password.	Press		again	when	prompted	to	confirm.
 &Other PCI Device ROM Priority  Allows you to select whether to enable the UEFI or Legacy option ROM for the PCI device controller other than the LAN, storage device, and graphics controllers. Legacy OpROM   Enables legacy option ROM only. UEFI	OpROM	 	 Enables	UEFI	option	ROM	only.	(Default)	 This	item	is	configurable	only	when	CSM Support is set to Always.
 &Network stack  Disables or enables booting from the network to install a GPT format OS, such as installing the OS from the	Windows	Deployment	Services	server.	(Default:	Disabled)
 &Ipv4 PXE Support 	 Enables	or	disables	IPv4	PXE	Support.	 This	item	is	configurable	only	when	Network stack is enabled.
 &Ipv6 PXE Support 	 Enables	or	disables	IPv6	PXE	Support.	This	item	is	configurable	only	when	Network stack is enabled.  
						

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2-6 Peripherals
 &Initial Display Output	 Specifies	 the	first	 initiation	 of	the	 monitor	 display	from	the	installed	 PCI	Express	 graphics	 card	or	the	 onboard 	graphics. IGFX	 	 	 Sets	the	onboard	graphics	as	the	first	display. PCIe	1	Slot		 Sets	the	graphics	card	on	the	PCIEX16	slot	as	the	first	display.	(Default)
 &XHCI Mode Allows you to determine the operating mode for the xHCI controller in OS. Smart Auto     This mode is available only when the BIOS supports the xHCI controller in the pre-boot environment. This mode is similar to Auto, but it adds the capability to route the ports to	xHCI	 or	EHCI	 according	 to	setting	 used	in	previous	 boots	(for	non-G3	 boot)	in	the	pre-boot environment. This allows the use of USB 3.0 devices prior to OS boot. xHCI controller enabling and rerouting should follow the steps in Auto, when previous boot routs ports to EHCI. Note: This is the recommended mode when BIOS has xHCI pre-boot	support.	(Default) Auto        BIOS routes the sharable ports to EHCI controller. Then it uses ACPI protocols to provide an option to enable the xHCI controller and reroute the sharable ports. Note: This is the recommended mode when BIOS does NOT have xHCI pre-boot support. Enabled      All shared ports are eventually routed to the xHCI controller during the\
 BIOS boot process. If BIOS does not have pre-boot support for the xHCI controller, it should initially route the sharable ports to the EHCI controller and then prior to OS boot it should route the ports to xHCI controller. Note: OS has to provide support for the xHCI controller in this mode. If the OS does not provide support, all sharable ports won't work.\
 Disabled      The USB 3.0 ports are routed to the EHCI controller and the xHCI controller is turned off. All USB 3.0 devices function as High Speed devices regardless of xHCI software 
support/availability.
BIOS Setup