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After setting these jumpers, an Intel Pentium
processor will multiply the
external bus clock by the frequency ratio to become the internal clock
speed. Internal clock speed is the commonly used speed of Intel processors
in the market and is the actual operating clock of the processor (external
bus clock x frequency ratio = internal clock speed).
Cyrix and AMD processors use the P-rating system which is the overall
CPU performance rating. Under the system, these processors slightly out-
perform Intels Pentium processors.
Jumper JP5 is used to set the cache burst mode of your processor. Refer to
the following pages and set this jumper accordingly.
Jumpers JP3, JP14 and JP15 are used to set the voltage of your processor.
Make sure these jumpers are set correctly, otherwise your system will hang.
The table below shows the External System Bus Clock of the CPUs sup-
ported by the system board and their corresponding PCI Clock and ISA Bus
Clock.
External System Bus Clock
50MHz
55MHz
60MHz
66MHz
75MHz
PCI CLK
25MHz
27.5MHz
30MHz
33MHz
32MHz
ISA Bus CLK
8.333MHz
9.1666MHz
7.5MHz
8.25MHz
8MHz
