MSI G52-MA00628 - Manual (Page 61)

BIOS Setup
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Power Management Setup
The Power Management Setup allows you to configure you system to most
effectively save energy while operating in a manner consistent with your own
style of computer use.
IPCA function
This item is to activate the ACPI (Advanced Configuration and Power Man-
agement Interface) Function. If your operating system is ACPI-aware, such as
Windows ® 98SE/2000/ME, select Enabled. Settings: Enabled and Disabled.
Sleep State
This item specifies the power saving modes for ACPI function. Options are:
S1/POS The S1 sleep mode is a low power state. In this state, no
system context (CPU or chipset) is lost and hardware
maintains all system context.
S3/STR The S3 sleep mode is a power-down state in which power
is supplied only to essential components such as main
memory and wake-capable devices and all system con-
text is saved to main memory. The information stored in
memory will be used to restore the PC to the previous
state when an “wake up” event occurs.