Power Management; Power States - Intel BX80623I32100 Datasheet

Power Management

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Power Management
This chapter provides information on the following power management topics:
• Advanced Configuration and Power Interface (ACPI) States
• Processor Core
• Integrated Memory Controller (IMC)
• PCI Express*
• Direct Media Interface (DMI)
• Processor Graphics Controller
Figure 4-1.

Power States

Datasheet, Volume 1
G0 – Working
S0 – CPU Fully powered on
C0 – Active mode
P0
Pn
C1 – Auto halt
C1E – Auto halt, low freq, low voltage
C3 – L1/L2 caches flush, clocks off
C6 – save core states before shutdown
C7 – similar to C6, L3 flush
G1 – Sleeping
S3 cold – Sleep – Suspend To Ram (STR)
S4 – Hibernate – Suspend To Disk (STD),
Wakeup on PCH
S5 – Soft Off – no power,
Wakeup on PCH
G3 – Mechanical Off
* Note: Power states availability may vary between the different SKUs
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