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14 ASUS P2L97 User’s Manual
III. INSTALLATION
(Jumpers)
III. INSTALLATION
CPU Bus Frequency
CPU Core:Bus Frequency Multiple
R
4.5x(9/2)4.0x(4/1)3.5x(7/2)2.0x(2/1) 5.0x(5/1)
BF2
BF1
BF3
BF0
1
23
BF2
BF1
BF3
BF0
1
23
BF2
BF1
BF3
BF0
1
23
BF2
BF1
BF3
BF0
1
23
BF2
BF1
BF3
BF0
1
23
60MHz 66MHz 75MHz 83MHz
FS1
FS0
FS2
1
2
3
FS1
FS0
FS2
1
2
3
FS1
FS0
FS2
1
2
3
FS1
FS0
FS2
1
2
3
P2L97 CPU Jumpers
3. CPU Bus Frequency (FS0, FS1, FS2)
This option tells the clock generator what frequency to send to the CPU. This allows the
selection of the CPU’s External frequency (or BUS Clock). The BUS Clock multiplied
by the BUS Ratio equals the CPU’s Internal frequency (the advertised CPU speed).
4. CPU Core:BUS Frequency Multiple (BF0, BF1, BF2, BF3)
This option sets the frequency ratio between the Internal frequency of the CPU
and the CPU’s External frequency. These must be set in conjunction with the
CPU Bus Frequency.
WARNING! Frequencies above 66MHz exceed the specifications for the onboard
Intel Chipset and are not guaranteed to be stable.
NOTES: Overclocking your processor is not recommended. It may result in a slower
speed. Voltage Regulator Output Selection (VID) is not needed for the Pentium II
processor because it sends a VID signal directly to the onboard power controller.
Set the jumpers by the Internal speed of your processor as follows:
(BUS Freq.) (Freq. Ratio)
CPU Model Freq. Ratio BUS F. FS2 FS1 FS0 BF3 BF2 BF1 BF0
Intel Pentium II 333MHz 5.0x 66MHz [1-2] [1-2] [1-2] [2-3] [1-2] [1-2] [2-3]
Intel Pentium II 300MHz 4.5x 66MHz [1-2] [1-2] [1-2] [2-3] [1-2] [2-3] [1-2]
Intel Pentium II 266MHz 4.0x 66MHz [1-2] [1-2] [1-2] [2-3] [1-2] [2-3] [2-3]
Intel Pentium II 233MHz 3.5x 66MHz [1-2] [1-2] [1-2] [2-3] [2-3] [1-2] [1-2]
Intel Pentium II Processor in an SEC Cartridge (233-333MHz)