Intel PX875P Computer Hardware User Manual


 
PX875P PRO/ PX875P
31
Frequency/Voltage Control
g you to use higher “CPU Host Frequency” values.
ratio will be determined by the “CPU Clock Ratio” field.
U clock ratio is not locked by the CPU manufacturer.
PU Clock Ratio
U has not been set to a locked state by the CPU manufactory. If
ou setting for. If you don’t change the “CPU Host Frequency”
display the current CPU speed.
Clock Ratio” and overclock the DDR speeds of
will depend on the factory default setting for
e “CPU Host Frequency” BIOS field according to the table below.
CPU Host Frequency (MHz)
This item displays the CPU Host frequency . You can set it from XXX to 550 (or 255). The default
depends on your CPU frequency. The default for this field depends on the CPU installed.
CPU Clock Ratio 8X
When you enable this field, the CPU clock ratio is fixed at “8X” and overrides the entry for the “CPU
Clock Ratio” field (see “CPU Clock Ratio” field). The CPU clock ratio is used, in part, to determine
the CPU clock speed (CPU clock speed = CPU clock ratio * CPU Host Frequency). It has been
shown that a higher “CPU Host Frequency” and a lower “CPU Clock Ratio” is more desirable when
calculating a desired CPU clock speed. This field allows you to set the CPU clock ratio to a lower
than usual value (8X), allowin
When you disable this field, the CPU clock
This item will only appear when the CP
Options: Enabled, Disabled (default)
C
This field will only display if the CP
your CPU is locked, you will not be able to adjust the “CPU Clock Ratio”. The default depends on
your CPU.
CPU Speed Detected
This item display the currect CPU speed.
CPU Speed Setting
This item display the CPU speed that y
or the “CPU Clock Ratio” and the item will
DDR:CPU Ratio
This item allows you to adjust your “DRAM:CPU
e system. The options that are available for this itemth
th