Dell XPS 600 owner manual 134

w w w . d e l l . c o m s u p p o r t . d e l l . c o m

Multiple CPU Core	This setting specifies whether more than one core is enabled. The
	performance of some applications may improve with an additional core
	enabled. Defaults to On (second core enabled).
HDD Acoustic Mode	• Bypass — Your computer does not test or change the current acoustics
	mode setting.
	• Quiet (default) — The hard drive operates at its most quiet setting.
	• Suggested — The hard drive operates at the level suggested by the drive
	manufacturer.
	• Performance — The hard drive operates at its maximum speed.
	NOTE: Switching to performance mode may cause the drive to be noisier, but
	its performance is not affected.
	NOTE: Changing the acoustics setting does not alter your hard drive image.
CPU Clock Speed	With this option, it is possible to increase the operating frequency of the
	processor to a frequency greater than that in the processor manufacturer’s
	design specifications. Use of this option may invalidate your warranty.
	NOTICE: Dell does not recommend using extended operating
	frequencies or over-clocking. If you choose to over-clock your
	processor, the life expectancy of your processor may be reduced. Dell
	does not guarantee that your computer will remain stable or operate at
	the extended operating speeds.
Security	This section displays available system security options.
Admin Password	This option provides restricted access to the computer's system setup
	program in the same way that access to the system can be restricted with the
	System Password option.
System Password	Displays the current status of the system's password security feature and
	allows a new system password to be assigned and verified.
Password Changes	This option locks the system password field with the setup password. When
	the field is locked, you can no longer disable password security by pressing
	<Ctrl><Enter> when the computer starts.
DEP (Execute	• Opt-In(default) — DEP is enabled by default on computers with
Disable)	NX-capable processors. Only Windows system binaries are covered by DEP
	with this option. Applications may enable DEP protection through creating
	an application compatibility shim and installing that shim with the
	application.
	• Opt-Out— DEP is enabled for all processes. Users can manually create
	exceptions for specific applications in System Properties, or IT Pros and
	ISVs can use the Application Compatibility Toolkit to opt-out.
	• Always On — Full DEP coverage with no exceptions.
	• Always Off — No user-mode DEP coverage. Drivers and the Widows core
	kernel binaries are covered by DEP, but no other binaries are included in the
	set of covered applications.

134

Appendix