Lenovo 23427YU Graphics Device, Setting to Nvidia Optimus, To Discrete Graphics if, Power, Normal

Table 5. Config menu items (continued)

Menu item	Submenu item	Value		Comments
				Note: NVIDIA Optimus
				should be selected only if
				you are using a Windows 7
				model.
	OS Detection for NVIDIA	•	Disabled	The system BIOS
	Optimus	•	Enabled	automatically switches
				the Graphics Device
				setting to NVIDIA Optimus
				if the operating system
				supports the feature, and
				to Discrete Graphics if the
				operating system does not
				support it.
Power	Intel SpeedStep®	•	Disabled	Select the mode of Intel
	technology	•	Enabled	SpeedStep technology at
				runtime.
	(Intel SpeedStep mounted
		Mode for AC
	models only)			Maximum Performance:
		•	Maximum Performance
				Always highest speed
		•	Battery Optimized	Battery Optimized: Always
		Mode for Battery		lowest speed
		•	Maximum Performance	Disabled: No runtime
		•	Battery Optimized	support, lowest speed
	Adaptive Thermal	Scheme for AC		Select a thermal
	Management	•	Maximize Performance	management scheme
				to use.
		•	Balanced
		Scheme for Battery		Maximize Performance:
				Reduce CPU throttling
		•	Maximize Performance	Balanced: Balance
		•	Balanced
				sound, temperature, and
				performance
				Note: Each scheme affects
				fan sound, temperature,
				and performance.
	Optical Drive Speed	•	High Performance	Set the speed of the
		•	Normal	optical drive to the desired
				performance.
		•	Silent
	CPU Power Management	•	Disabled	Enable or disable the power
		•	Enabled	saving feature that stops
				the microprocessor clock
				automatically when there
				are no system activities.
				Normally, it is not necessary
				to change the setting.
	PCI Express Power	•	Disabled	Enable or disable a feature
	Management	•	Enabled	that automatically adjusts
				power management when
				there is no PCI Express

Chapter 8. Advanced configuration 119