System information

AMI BIOS
3-21
Power Mgmt --> Standby Timeout (Minutes)
Standby Timeout
(Minute)
Disabled
1
.....
15
This item lets you set the time of your system to go into
Standby power down state when there is no system
activities. In Standby state, CPU clock is slowdown
according to the ratio set in "Slow Clock Ratio" below.
Any event detected returns the system to full power. The
system activity(or event) is detected through monitoring
of IRQ signals.
Power Mgmt --> Suspend Timeout (Minutes)
Suspend Timeout
(Minute)
Disabled
1
.....
15
This item lets you set the time (after Standby) to go into
Suspend power down state when there is no system
activities. System goes to Standby first and then goes to
Suspend state. In Suspend state, CPU clock is stopped.
Any event detected returns the system to full power. The
system activity(or event) is detected through monitoring
of IRQ signals.
Power Mgmt --> Slow Clock Ratio
Slow Clock Ratio
1:1
1:2
1:4
1:8
1:16
1:32
1:64
1:128
When the system enters the Standby state, the CPU
clock count in a giving time (not frequency) is reduced
by the ratio set in this item, actually, the period per CPU
clock is not changed. For example, 30ns clock period of
66MHz CPU clock is not changed at Standby state,
chipset generates STPCLK (stop clock) signal
periodically to prevent CPU for accepting clock from
clock generator. For full power on, the CPU can receive
66M count in one second, but if the ratio is set at 1:2, the
CPU will only receive 33M clock count in one second at
Standby state. This will effectively reduce CPU speed as
well as CPU power. This method is also known as Clock
Throttling.