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Chapter 4 Award BIOS Setup
EB-471LF USER
′
S MANUAL
Page: 4-21
4-10. FREQUENCY CONTROL
Choose 〝FREQUENCY CONTROL〞 from the main menu, a display
will be shown on screen as below:
Phoenix - AwardBIOS CMOS Setup Utility
Frequency Control
Item Help
Auto Detect PCI Clk
Spread Spectrum
[Enabled]
[Enabled]
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 Control Setup Screen
This setup menu allows you to specify your settings for frequency control.
AUTO DETECT PCI CLK:
This item allows you to enable or disable auto detect PCI Clock.
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.