![Leadtek WinFast P4I845D User Manual Download Page 35](http://html.mh-extra.com/html/leadtek/winfast-p4i845d/winfast-p4i845d_user-manual_1865031035.webp)
31
4.9 X-BIOS II < Over Clocking >
* The Item Help column contains the description of selected item.
CPU Clock Ratio [10X]
The options are:
10X
,
11X
,
12X
,…
24X
.
NOTE:
This item is effective only when the clock-multiplier of the CPU is not locked.
Auto Detect PCI Clk [Disabled]
Enable or Disable the automatic detection of the PCI frequency clock.
The options are:
Enabled
and
Disabled
.
Spread Spectrum [Disabled]
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. You can reduce EMI by setting this item to turn on
the clock signal with spread spectrum support.
The options are:
Enabled
and
Disabled
.
CPU Clock [100MHz]
For setting the CPU clock frequency. The options range from
100
to
250 MHz
.
CPU Vcore Select [Default]
The options are:
Default
, and from
1.100V
, to
1.850V
at 0.025V increments.
AGP Slot Vddq [Default]
The options are:
+0.1V
,
+0.2V
,
+0.3V
, and
Default
.