Intel 815 Micro-ATX Mainboard
AWARD BIOS SETUP
4-23
4.11
FREQUENCY/VOLTAGE CONTROL
CMOS Setup Utility - Copyright (C) 1984 - 2000 Award Software
Frequency/Voltage Control
Auto Detact DIMM/PCI Clk
: Disabled
Item Help
Spread Spectrum
: Disabled
CPU Host / PCI Clock / PC133
: Default
Menu Level
Ø
CPU Clock Ratio
: X 3
Auto Detect DIMM/PCI Clk:
( default setting : “Disabled” )
When “Enabled” is selected, the mainboard will detect the presence of devices on
DIMM and PCI slots. When there is no device presented on some of the PCI or
DIMM connector, the clock on the related DIMM and PCI slot will be disabled to
reduce the Electro-Magnetic Interference (EMI).
Note: When you enable this field, the system performance will be reduced
slightly.
CPU Host / PCI Clock / PC133:
( default setting : “Default” )
This field allows you to select the CPU FSB clock and the system EMI radiation.
When you select default, the mainboard will detect the CPU type and choose the
proper FSB clock and decide whether to enable the Spread Spectrum or not. When
Spread Spectrum is enabled, the special feature designed in the system chipset will
be triggered and reduce the EMI as mentioned in the previous field.
CPU Clock Ratio:
( default setting : “X 3” )
This field allows to select the CPU clock ratio. Basically, most CPU clock ratio is
fixed inside the CPU and user can not change it. In this case, the setting in this field
will make no change to the default CPU clock ratio because it is decided by the
CPU automatically.