User Guide

16 ASUS P2V-B User’s Manual
III. HARDWARE SETUP
4. CPU BUS Frequency Selection (FS0, FS1, FS2, FS3)
This option tells the clock generator what frequency to send to the CPU, DRAM, and
the chipset. 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).
P2V-B CPU Bus Frequency
Selection
103.00MHz
34.33MHz
123
100.30MHz
33.43MHz
123
83.30MHz
41.65MHz
123
75.0MHz
37.5MHz
123
66.8MHz
33.4MHz
123
133.00MHz
44.33MHz
123
120.0MHz
40.0MHz
123
115.00MHz
38.33MHz
123
CPU
PCI
FS0
FS1
FS2
FS3
110.00MHz
36.67MHz
123
112.00MHz
37.33MHz
123
105.0MHz
35.0MHz
123
CPU
PCI
FS0
FS1
FS2
FS3
CPU
PCI
FS0
FS1
FS2
FS3
R
P2V-B
WARNING! Frequencies above 100MHz exceed the specifications for the on-
board chipset and are not guaranteed to be stable.
WARNING! PCI frequencies above 33MHz exceed the specifications for PCI
cards and are not guaranteed to be stable.
Jumpers
III. H/W SETUP
5. CPU to BUS Frequency Multiple (BF0, BF1, BF2, BF3)
This option sets the frequency multiple between the Internal frequency of the
CPU and the CPU’s External frequency. This must be set in conjunction with the
CPU BUS Frequency.
P2V-B CPU Core-to-Bus
Frequency Multiple Settings
BF1 BF2 BF0 BF3
4.0x(4/1)
BF1 BF2 BF0 BF3
2.0x(2/1)
1
2
3
BF1 BF2 BF0 BF3
2.5x(5/2)
BF1 BF2 BF0 BF3
3.0x(3/1)
BF1 BF2 BF0 BF3
3.5x(7/2)
BF1 BF2 BF0 BF3
4.5x(9/2)
BF1 BF2 BF0 BF3
5.0x(5/1)
BF1 BF2 BF0 BF3
5.5x(11/2)
R
P2V-B
1
2
3
1
2
3
BF1 BF2 BF0 BF3
7.0x(7/1) 7.5x(15/2)
BF1 BF2 BF0 BF3
8.0x(8/1)
BF1 BF2 BF0 BF3
1
2
3
6.5x(13/2)6.0x(6/1)
BF1 BF2 BF0 BF3 BF1 BF2 BF0 BF3