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SUPER P6DLS/P6DLE/P6SLS/P6SLA User's Manual
2-3 Changing the CPU Speed
To change the CPU speed for a Pentium II processor, change the
jumpers shown below on Table 2-1.
external bus speed jumper settings.
MHz.
The following example will show you which CPU Core/Bus
Ratio touse. The following example will show you which CPU Core/
Bus Ratio to use. The general rule is to divide the CPU speed by
the bus speed (66 MHz). If you have a 266 MHz CPU, dividing it by
66 will give you a CPU Core/Bus Ratio of 4. After determining the
CPU Core/Bus Ratio, refer to Table 2-1 for settings of JB1, JB2, JB3
and JB4.
CPU Core/Bus Ratio =
CPU Core/Bus Ratio =
Table 2-1. Pentium II Speed Selection
CPU Core/
Bus Ratio
3.0
3.5
4.0
4.5
5.0
Refer to Table 2-2 for the
The default bus speed is 66
CPU Speed
Bus Frequency
266 MHz
= 4.0
66 MHz
JB1
JB2
JB3
JB4
ON
OFF
ON
ON
OFF
OFF
ON
ON
ON
ON
OFF
ON
OFF
ON
OFF
ON
ON
OFF
OFF
ON
2-8
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Troubleshooting
