Dell XPS 720 (Mid 2007) - Manual (Page 170)

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Appendix
Advanced Displays processor type and current BIOS settings for processor clock speed,
processor multiplier, front side bus (FSB) clock, and CPU core voltage. These
settings may have been set by performance tuning applications or may change
depending on settings in performance applications that you have installed.
For systems with Intel Extreme processors, the following fields are adjustable
through the BIOS:
• Processor Clock Speed: Adjusts the multiplier of the processor. For processors
that cannot be overclocked, this field reports the current settings and cannot
be changed.
• Performance Application Support: Enables software applications to display
and modify key system parameters to tune system performance. These
applications are not installed or supported by Dell. The default is Off.
NOTE:
To enable overclocking of other system components, you first need to
enable the Performance Application Support option in BIOS and then download
an application like NVIDIA nTune version 5.0 or higher.
NOTE:
Pressing <Alt><F> returns your system to the factory defaults including
RAID settings.
SpeedStep
(Off default)
Specifies whether Enhanced Intel SpeedStep
®
technology is enabled for all
supported processors in the system.
• Off — Disable Enhanced SpeedStep technology
• On — Enable Enhanced SpeedStep technology
Virtualization
(Off default)
Specifies whether a virtual machine monitor (VMM) can utilize the
additional hardware capabilities provided by Intel Virtualization Technology
• Off — Disable Virtualization Technology
• On — Enable Virtualization Technology
HDD Acoustic Mode
(Bypass default)
Determines the acoustic mode at which the hard drive operates.
• Bypass — Do nothing (needed for older drives).
• Quiet — The hard drive operates at a slower, but quieter speed.
• Suggested — Allow the hard drive manufacturer to select the mode.
• Performance — The hard drive operates at a faster, but possibly noisier speed.
NOTE:
Switching to performance mode may cause an increase in noise
produced by the drive, but does not affect the drive’s performance.
NOTE:
Changing the acoustics setting does not alter your hard drive image.
Security
Admin Password
(Not Set default)
Used to prohibit an unauthorized user from changing any configuration
settings in the system setup.
System Password
(Not Set default)
Used to prohibit an unauthorized user from booting to the operating system.