Intel D915GAG Product Specification - Page 43

Table 11., Power States and Targeted System Power

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Product Description Table 11 lists the power states supported by the boards along with the associated system power targets. See the ACPI specification for a complete description of the various system and power states. Table 11. Power States and Targeted System Power Global States G0 - working state Sleeping States S0 - working Processor States C0 - working Device States D0 - working state. Targeted System Power (Note 1) Full power > 30 W G1 - sleeping state S1 - Processor stopped C1 - stop grant G1 - sleeping state G1 - sleeping state G2/S5 G3 - mechanical off AC power is disconnected from the computer. S3 - Suspend to RAM. Context saved to RAM. S4 - Suspend to disk. Context saved to disk. S5 - Soft off. Context not saved. Cold boot is required. No power to the system. No power No power No power No power D1, D2, D3 - device specification specific. D3 - no power except for wake-up logic. D3 - no power except for wake-up logic. D3 - no power except for wake-up logic. 5 W < power < 52.5 W Power < 5 W (Note 2) Power < 5 W (Note 2) Power < 5 W (Note 2) 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. 43

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Product Description
43
Table 11 lists the power states supported by the boards along with the associated system power
targets.
See the ACPI specification for a complete description of the various system and power
states.
Table 11.
Power States and Targeted System Power
Global States
Sleeping States
Processor
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.