Installation Instructions
Manual for P7B series
21
Overclocking Jumper Setting (JFSB)(Optional)
Jumper labeled JFSB is located on the mainboard providing users with CPU overclocking
feature. The host bus speed can be set as 100 X 4/133 X 4MHz or AUTO. Refer to the
chart below for the location of these jumpers, and the table for information on how to set
them.
If CPU FSB is set as Auto (default), the system detects the CPU FSB (front side bus)
automatically. If CPU FSB is set as 100 x 4 MHz, the system will run at 400MHz even if a
processor with 533MHz FSB is installed. Setting up to 133 x 4 MHz using processors with
400MHz bus speed is also supported. However, whether or not the system can be
overclocked depends on your processor’s capability. Whether the processor is bus ratio
locked or unlocked should also be taken into account. For bus ratio unlocked processor,
this overclocking feature can be implemented by setting CPU FSB as 100/133MHz, mean-
while adjusting the bus ratio (multiplier) lower in “CPU SpeedEasy Setup” in AWARD BIOS
CMOS Setup. You can also adjust the CPU frequency by running StepEasy II. We do not
guarantee the overclocking system will be stable.
3
1
2
JFSB
JFSB
2-3
open 1-2
FSB 100MHz 133MHz AUTO
(default)
