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4.2.6. Power Management Setup
This part of the setup configures power conservation options.
ACPI Function
Power
Management
PM Control by
APM
Video Off Method
Video Off After
Doze Mode
Standby Mode
Suspend Mode
HDD Power Down
HDD Down When
Suspend
Throttle Duty Cycle
PCI / VGA
Act-Monitor
Soft-OFF by
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BIOS
Setup
Option
Defaults
Defaults
Dis.
En.
User
User
Def.
Def.
Yes
Yes
V/H SYNC
V/H SYNC
+
+
Blank
Blank
Standby
Standby
Dis.
Dis
Dis.
Dis.
Dis.
Dis.
Dis.
Dis.
En.
En.
75.0%
75.0%
Dis.
Dis.
Instant-off
Instant-off
Possible
Settings
En./Dis.
The Advanced Configuration and Power Interface (ACPI) allows
Operating System Direct Power Management (OSPM) and make
advanced configuration architectures possible.
When Enabled, the OS supports ACPI or OSPM (e.g., Win98, and
Windows 2000
Note: When Enabled, and the OS is ACPI compliant, the OS
setting take precedence over all settings in this menu.
User Define,
This option allows you to select the type (or degree) of power
Min Saving,
saving for Doze, Standby, and Suspend modes.
Max Saving
Max Saving: Maximum power savings. Inactivity period is 1
minute in each mode.
Min Saving: Minimum power savings. Inactivity period is the
maximum setting in each mode (1 hour for Doze, Standby and
Suspend).
User Define: Set each mode individually. Select time-out periods
in the PM Timers section (see below).
Yes, No
If Yes, the OS can control the PM by APM calls. If No, the BIOS
will control the PM (Power Management)
Blank Screen
Determines the manner in which the monitor is blanked.
V/H
V/H SYNC + Blank: System turns off vertical and horizontal
SYNC+Blank,
synchronization ports and writes blanks to the video buffer.
DPMS,
DPMS Support: Select this option if your monitor supports the Display
Power Management Signaling (DPMS) standard of the Video
Electronics Standards Association (VESA). Use the software supplied
for your video subsystem to select video power management values.
Blank Screen: System only writes blanks to the video buffer.
NA, Suspend,
As the system moves from lesser to greater power-saving modes,
Standby, Doze,
select the mode in which you want the monitor to blank.
Disable
After the selected period of system inactivity (1 minute to 1 hour), the
1min to 1h
CPU clock runs at lower speed while all other devices still operate at full
speed.
Disable
After entering Doze mode and the selected period of system inactivity
1min to 1h
(1 minute to 1 hour) has elapsed, the non-essential devices are shut off
while all other devices still operate at full speed.
Disable
After entering Standby mode and the selected period of system
1min to 1h
inactivity (1 minute to 1 hour) has elapsed, all devices including the
CPU shut off and the system waits for an event to wake them up again.
Disable
After the selected period of drive inactivity (1 to 15 minutes), the hard
1-15min
disk drive powers down while all other devices remain active. The HDD
power down mode is only available if the hard drive has this capability.
En./Dis.
When Enabled and the system goes in Suspend Mode, the hard disk is
shut down.
12.5%-75.0%
When the system enters Doze mode, the CPU clock runs only part of
the time. You may select the percentage of time that the clock
does not run. When 12.5% is selected, the CPU is running at nearly
Full Speed and if 75% is selected, the CPU will be idle 75% of time.
En./Dis.
When Enabled, continuous video activity restarts the global timer for
Standby mode.
Instant-off,
This option only works with an ATX power supply. It allows two
Delay 4 sec.
configurations for the power button: Instant-off for power supply on/off
switch, or Delay 4 sec. for entering Suspend Mode after pressing the
button at least 4 seconds.
4-11
Description
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