Intel BOXD910GLDW Product Specification - Page 32

System States and Power States

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Intel Desktop Board D910GLDW Technical Product Specification 1.12.1.1 System States and Power States Under ACPI, the operating system directs all system and device power state transitions. The operating system puts devices in and out of low-power states based on user preferences and knowledge of how devices are being used by applications. Devices that are not being used can be turned off. The operating system uses information from applications and user settings to put the system as a whole into a low-power state. Table 7 lists the power states supported by the board along with the associated system power targets. See the ACPI specification for a complete description of the various system and power states. Table 7. Power States and Targeted System Power Global States Sleeping States Process or States Device States Targeted System Power (Note 1) G0 - working state S0 - working C0 - working D0 - working state. Full power > 30 W G1 - sleeping state G1 - sleeping state S1 - Processor stopped S3 - Suspend to RAM. Context saved to RAM. C1 - stop grant No power D1, D2, D3 - device specification specific. D3 - no power except for wake-up logic. 5 W < power < 52.5 W Power < 5 W (Note 2) G1 - sleeping state S4 - Suspend to disk. Context saved to disk. No power D3 - no power except Power < 5 W (Note 2) for wake-up logic. G2/S5 S5 - Soft off. Context not saved. Cold boot is required. No power D3 - no power except for wake-up logic. Power < 5 W (Note 2) G3 - mechanical off AC power is disconnected from the computer. No power to the system. No power D3 - no power for wake-up logic, except when provided by battery or external source. No power to the system. Service can be performed safely. Notes: 1. Total system power is dependent on the system configuration, including add-in boards and peripherals powered by the system chassis' power supply. 2. Dependent on the standby power consumption of wake-up devices used in the system. 32

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Intel Desktop Board D910GLDW Technical Product Specification
32
1.12.1.1
System States and Power States
Under ACPI, the operating system directs all system and device power state transitions.
The
operating system puts devices in and out of low-power states based on user preferences and
knowledge of how devices are being used by applications.
Devices that are not being used can be
turned off.
The operating system uses information from applications and user settings to put the
system as a whole into a low-power state.
Table 7 lists the power states supported by the board along with the associated system power targets.
See
the ACPI specification for a complete description of the various system and power states.
Table 7.
Power States and Targeted System Power
Global States
Sleeping States
Process
or States
Device States
Targeted System
Power
(Note 1)
G0 – working state
S0 – working
C0 –
working
D0 – working state.
Full power > 30 W
G1 – sleeping state
S1 – Processor
stopped
C1 – stop
grant
D1, D2, D3 – device
specification specific.
5 W < power < 52.5 W
G1 – sleeping state
S3 – Suspend to
RAM.
Context
saved to RAM.
No power
D3 – no power except
for wake-up logic.
Power < 5 W
(Note 2)
G1 – sleeping state
S4 – Suspend to
disk.
Context
saved to disk.
No power
D3 – no power except
for wake-up logic.
Power < 5 W
(Note 2)
G2/S5
S5 – Soft off.
Context not saved.
Cold boot is
required.
No power
D3 – no power except
for wake-up logic.
Power < 5 W
(Note 2)
G3 – mechanical off
AC power is
disconnected from
the computer.
No power to the
system.
No power
D3 – no power for
wake-up logic, except
when provided by
battery or external
source.
No power to the
system.
Service can
be performed safely.
Notes:
1.
Total system power is dependent on the system configuration, including add-in boards and peripherals powered
by the system chassis’ power supply.
2.
Dependent on the standby power consumption of wake-up devices used in the system.