HP Compaq d330 DT User Manual

Chapter 7 Power and Signal Distribution
7.2.3 POWER MANAGEMENT
These systems include power management functions designed to conserve energy. These
functions are provided by a combination of hardware, firmware (BIOS) and software. The system
provides the following power management features:
J ACPI v1.0b compliant (ACPI modes C1, C2, S1, and S3, )
J APM 1.2 compliant
J
U.S. EPA Energy Star compliant
Table 7-4 shows the comparison in power states.
Table 7-4. System Power States
Table 7-4.
System Power States
Power
State System Condition
Power
Consumption
Transition
To S0 by [2]
OS Restart
Required
G0, S0, D0 System fully on. OS and application
is running, all components.
Maximum N/A No
G1, S1, C1, D1 System on, CPU is executing and
data is held in memory. Some
peripheral subsystems may be on
low power. Monitor is blanked.
Low < 2 sec after
keyboard or
pointing device
action
No
G1, S2/3, C2,
D2 (Standby/
suspend)
System on, CPU not executing,
cache data lost. Memory is holding
data, display and I/O subsystems on
low power.
Low < 5 sec. after
keyboard,
pointing device,
or power button
action
No
G1, S4, D3
(Hibernation)
System off. CPU, memory, and
most subsystems shut down.
Memory image saved to disk for
recall on power up.
Low <25 sec. after
power button
action
Yes
G2, S5, D3
cold
System off. All components either
completely shut down or receiving
minimum power to perform system
wake-up.
Minimum <35 sec. after
power button
action
Yes
G3 System off (mechanical). No power
to any internal components except
RTC circuit. [1]
None — —
NOTES:
Gn = Global state.
Sn = Sleep state.
Cn = ACPI state.
Dn = PCI state.
[1] Power cord is disconnected for this condition.
[2] Actual transition time dependent on OS and/or application software.
hp compaq d330 and d530 Series of Personal Computers
Featuring the Intel Pentium 4 Processor
First Edition - June 2003
7-6

HP Compaq d330 DT Specifications

General

Brand	HP
Model	Compaq d330 DT
Category	Desktop
Language	English