Asus P2L-M User Manual page 16

3. CPU External (BUS) Frequency Selection (FS0, FS1, FS2)
These jumpers tell the clock generator what frequency to send to the CPU. These
allow the selection of the CPU's External frequency (or BUS Clock). The BUS Clock
times the BUS Ratio equals the CPU's Internal frequency (the advertised CPU speed).
4. CPU to BUS Frequency Ratio (BF0, BF1, BF2, BF3)
These jumpers set the frequency ratio between the Internal frequency of the CPU
and the External frequency (called the BUS Clock) within the CPU. These must
be set together with the above jumpers CPU External (BUS) Frequency Selection.
P2L-M CPU Settings
WARNING! Do not overclock your processor. Frequencies above 66MHz ex-
ceed the specifications for the onboard Intel Chipset and are not guaranteed to be
stable. Overclocking can cause undue stress on the CPU and motherboard. It
may result in a slower speed or other unpredictable outcomes. The table on the
following page shows the approved CPUs and their settings.
Set the jumpers by the Internal speed of your processor as follows:
CPU Model Speed
Intel Pentium II 333MHz
Intel Pentium II 300MHz
Intel Pentium II 266MHz
Intel Pentium II 233MHz
Intel Pentium II Processor in a SEC Cartridge
(233-333MHz 512KB/256KB/0KB L2 Cache)
NOTE: 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.
16
III. INSTALLATION
BF3 BF2 BF1
1
2
3
3.0x(3/1)
BF3 BF1
BF2
1
2
3
4.5x(9/2)
CPU Core:Bus Frequency Multiple
FS0 FS1 FS2
1
2
3
50MHz
CPU Bus Frequency
F. Ratio BUS F. FS0 FS1 FS2
5.0x 66MHz [1-2] [1-2] [1-2]
4.5x 66MHz [1-2] [1-2] [1-2]
4.0x 66MHz [1-2] [1-2] [1-2]
3.5x 66MHz [1-2] [1-2] [1-2]
ASUS P2L-M User's Manual
BF0 BF3 BF2 BF1 BF0 BF3 BF2 BF1 BF0
1 1
2 2
3 3
3.5x(7/2) 4.0x(4/1)
BF0 BF3 BF1 BF0
BF2
1
2
3
5.0x(5/1)
FS0 FS1 FS2 FS0 FS1 FS2 FS0 FS1 FS2
1 1 1
2 2 2
3 3 3
66MHz 75MHz 83MHz
(BUS Freq.) (Freq. Ratio)
BF0 BF1 BF2 BF3
[2-3] [1-2] [1-2] [2-3]
[1-2] [2-3] [1-2] [2-3]
[2-3] [2-3] [1-2] [2-3]
[1-2] [1-2] [2-3] [2-3]