Intel D975XBX2 - Desktop Board Motherboard, Specification

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Product Description
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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 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.