Asus P2B Pentium II User Manual page 14

3. CPU Bus Frequency (FS0, FS1, FS2)
This option tells the clock generator what frequency to send to the CPU, DRAM, and
440BX AGPset. 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 fre-
quency (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.
P2B CPU
WARNING! Frequencies above 100Mhz exceed the specifications for the on-
board Intel Chipset and are not guaranteed to be stable.
Intel Pentium II Processor in an SEC Cartridge
(233-400MHz 256/512KB L2 Cache)
Set the jumpers by the Internal speed of your processor as follows:
CPU Model Freq.
Intel Pentium II 400MHz
Intel Pentium II 350MHz
Intel Pentium II 300MHz
Intel Pentium II 333MHz
Intel Pentium II 300MHz
Intel Pentium II 266MHz
Intel Pentium II 233MHz
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.
14
III. INSTALLATION
1 1
2 2
3 3
2.5x (5/2) 3.0X (3/1)
2.0x (2/1)
1 1
2 2
3 3
5.5x (11/2) 6.0x (6/1) 6.5X (13/2)
CPU Core:BUS Frequency Multiple
1
1
1
2 2
2
3
3
3
66.8MHz 75MHz 83.3MHz
33.4MHz 37.5MHz 41.65MHz
CPU External Clock (BUS) Frequency Selection
Ratio BUS F. FS0 FS1 FS2
4.0x 100MHz [1-2] [1-2] [1-2]
3.5x 100MHz [1-2] [1-2] [1-2]
3.0x 100MHz [1-2] [1-2] [1-2]
5.0x 66MHz [1-2] [1-2] [2-3]
4.5x 66MHz [1-2] [1-2] [2-3]
4.0x 66MHz [1-2] [1-2] [2-3]
3.5x 66MHz [1-2] [1-2] [2-3]
ASUS P2B User's Manual
1 1 1
2 2 2
3 3 3
3.5X (7/2) 4.0X (4/1)
1 1 1
2 2 2
3 3 3
7.0X (7/1) 7.5X (15/2) 8.0X (8/1)
1
1
2
2
3
3
CPU
100.2MHz 103MHz 112MHz
PCI
33.3MHz 33.4MHz 37.3MHz
(BUS Freq.)
BF0
[2-3] [2-3] [1-2] [2-3]
[1-2] [1-2] [2-3] [2-3]
[2-3] [1-2] [2-3] [2-3]
[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]
1
2
3
4.5X (9/2) 5.0X (5/1)
(Freq. Ratio)
BF1 BF2 BF3