PX865PE/ PX865P Series
33
DDR:CPU Ratio
This item allows you to adjust your “DRAM:CPU Clock Ratio” and overclock the DDR speeds of
the system. The options that are available for this item will depend on the factory default setting for
the “CPU Host Frequency” BIOS field according to the table below.
Factory Default
CPU Host Frequency
Available Options
100
2.66X
133
Default (default), 2.00X, 2.50X,
【
2.66X (Turbo) only for PX865PE series
】
200
Default (default), 1.33X, 1.60X, 2.00X,
2.50X (Turbo), 2.66X (Turbo)
【
only for PX865PE series
】
Spread Spectrum
The Spread Spectrum function can reduce the EMI (Electromagnetic Interference) generated. Options:
Enabled (default)
、
Disabled
AGP/PCI/SRC Speed Setting
This item determines the AGP, PCI and SRC frequencies (speed settings). You can set these
frequencies using the supplied BIOS options. One of the options available to you is “Auto, Auto,
Auto”. Using the “Auto, Auto, Auto” option will instruct the system to automatically calculate these
frequencies based on the factory default “CPU Host Frequency” setting, the current “CPU Host
Frequency” setting and the formulas in the table below. Note that the factory default “CPU Host
Frequency” is the value of the “CPU Host Frequency” when you first received your system.
Factory Default
“CPU Host
Frequency”
Formulas
100
AGP frequency
=
current
CPU Host Frequency / 1.5
PCI frequency
=
current
CPU Host Frequency / 3
SRC frequency
=
current
CPU Host Frequency / 1
133
AGP frequency
=
current
CPU Host Frequency / 2
PCI frequency
=
current
CPU Host Frequency / 4
SRC frequency
=
current
CPU Host Frequency / 1.33
200
AGP frequency
=
current
CPU Host Frequency / 3
PCI frequency
=
current
CPU Host Frequency / 6
SRC frequency
=
current
CPU Host Frequency / 2
To determine your new frequencies, you must first take the factory default “CPU Host Frequency”
and then determine the corresponding formulas according to the table above. Second, take the current
“CPU Host Frequency” setting and apply it to the formulas to arrive at your new frequencies.