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X8SIU-F
system cooling. The Performance setting is recommended for high-power-consum-
ing and high-density systems. Select Balanced for the onboard fans to run at 50%
of the Initial PWM Cycle in order to balance the needs between system cooling
and power saving. The Balanced setting is recommended for regular systems with
normal hardware configurations. Select Energy Saving for the onboard fans to run
at 30% of the Initial PWM Cycle for best power efficiency and maximum quietness.
The Options are: Full Speed (@100% of PWM Cycle), Performance (@70% of
PWM Cycle),
Balanced
(@50% of PWM Cycle), and Energy Saving (@30% of
PWM Cycle).
CPU Vcore, AVCC, 3.3Vcc, 12V, V_DIMM, 5V, 5Vsb, 3.3Vsb, and Vbat
ACPI Configuration
Use this feature to configure Advanced Configuration and Power Interface (ACPI)
power management settings for your system.
High Performance Event Timer
Select Enabled to activate the High Performance Event Timer (HPET) that produces
periodic interrupts at a much higher frequency than a Real-time Clock (RTC) does in
synchronizing multimedia streams, providing smooth playback and reducing the de-
pendency on other timestamp calculation devices, such as an x86 RDTSC Instruc-
tion embedded in the CPU. The High Performance Event Timer is used to replace
the 8254 Programmable Interval Timer. The options are
Enabled
and Disabled.
PS2 KB/MS Wakeup
This feature is used to awaken the system from Standby mode by a PS/2 mouse
or PS/2 keyboard. This must be enabled in the system level and Operating System
(O/S) as well, if supported).
S1 (OS Control)
- Enables system wake up from S1 (default).
S5 (OS Control) - Enables system wake up from S1/S3/S4/S5.
Force Enable - Wake up support is always enabled regardless whether it is disabled
in the O/S.
Force Disable - Wake up support is always disabled regardless whether it is en-
abled in the O/S.
ACPI Aware O/S
Enable ACPI support if it is supported by the OS to control ACPI through the Operat-
ing System. Otherwise, disable this feature. The options are
Yes
and No.
Summary of Contents for X8SIU-F
Page 1: ...USER S MANUAL Revision 1 0a X8SIU F...
Page 66: ...3 8 X8SIU F User s Manual Notes...
Page 90: ...4 24 X8SIU F Notes...
Page 92: ...A 2 X8SIU F User s Manual Notes...