Chapter 4 Award BIOS Setup
PSB-1688LF USER
′
S MANUAL Page: 4-29
SHUTDOWN TEMPERATURE:
This item allows you to set up the CPU shutdown Temperature. This
function is only effective under Windows 98 ACPI mode.
4-10. FREQUENCY/VOLTAGE CONTROL
Choose 〝FREQUENCY/VOLTAGE CONTROL〞 f rom the main menu,
a display will be shown on screen as below:
Phoenix – Award CMOS Setup Utility
Frequency/Voltage Control
Item Help
Auto Detect DIMM/PCI Clk
Spread Spectrum
CPU Clock
[Enabled]
[Disabled]
[100]
Menu Level ►
↑↓→←:Move Enter: Select +/-/PU/PD:Value F10:Save ESC:Exit F1:General Help
F5: Previous Values F6:Fail-Safe Defaults F7:Optimized Defaults
Frequency / Voltage Control Setup Screen
This setup menu allows you to specify your settings for frequency/voltage
control.
AUTO DETECT DIMM/PCI CLK:
When enabled, this item will auto detect if the DIMM and PCI socket have
devices and will send clock signal to DIMM and PCI devices. When
disabled, it will send the clock signal to all DIMM and PCI socket.
SPREAD SPECTRUM:
When the system clock generator pulses, the extreme values of the pulse
generate excess EMI. Enabling pulse spectrum spread modulation
changes the extreme values from spikes to flat curves, thus reducing EMI.
This benefit may in some cases be outweighed by problems with timing-
critical devices such as a clock-sensitive SCSI device.