Intel DC3217IYE Technical Product Specification - Page 31

System States and Power States - power consumption

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Product Description 1.11.1.1 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 8 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 8. Power States and Targeted System Power Global States Sleeping States Processor States Device States Targeted System Power (Note 1) G0 - working state G1 - sleeping state G1 - sleeping state G2/S5 S0 - working 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. C0 - working No power No power No power D0 - working state. D3 - no power except for wake-up logic. D3 - no power except for wake-up logic. D3 - no power except for wake-up logic. Full power > 30 W Power < 5 W (Note 2) Power < 5 W (Note 2) 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. 31

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Product Description
31
1.11.1.1
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 8 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 8.
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
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.