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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.
Password Changes
(Unlocked default)
This option locks the system password
field with the administrator (admin)
password.
NOTE: When the system password field
is locked, you can no longer disable
password security by pressing
<Ctrl><Enter> when the computer
starts.
Execute Disable
(On default)
Enables or disables Execute Disable
Memory Protection technology.
Off — Execute Disable Memory
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Documentation
6.07.2007
http://support.euro.dell.com/support/edocs/systems/720H2C/en/OM/appendix.htm