Asus P2B - Manual (Page 14)

ASUS P2B User’s Manual 14
III. HARDWARE SETUP
Jumpers
III. H/W SETUP
3. CPU Bus Frequency (FS0, FS1, FS2)
This option tells the clock generator what frequency to send to the CPU, DRAM, and
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 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.
BF2 BF1 BF3
CPU Core:BUS Frequency Multiple
P2B CPU
R
BF0 BF2 BF1 BF3 BF0 BF2 BF1 BF3 BF0 BF2 BF1 BF3 BF0 BF2 BF1 BF3 BF0 BF2 BF1 BF3 BF0 BF2 BF1 BF3 BF0
2.0x (2/1) 2.5x (5/2) 3.0X (3/1) 3.5X (7/2) 4.0X (4/1) 4.5X (9/2) 5.0X (5/1)
FS1 FS2 FS0
1
2
3
FS1 FS2 FS0
1
2
3
FS1 FS2 FS0
1
2
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
FS1 FS2 FS0
1
2
3
FS1 FS2 FS0
1
2
3
FS1 FS2 FS0
103MHz
33.4MHz
CPU External Clock (BUS) Frequency Selection
CPU
PCI 66.8MHz
33.4MHz 75MHz
37.5MHz
83.3MHz
41.65MHz
100.2MHz
33.3MHz
112MHz
37.3MHz
BF2 BF1 BF3 BF0 BF2 BF1 BF3 BF0 BF2 BF1 BF3 BF0 BF2 BF1 BF3 BF0 BF2 BF1 BF3 BF0 BF2 BF1 BF3 BF0
5.5x (11/2) 6.0x (6/1) 6.5X (13/2) 7.0X (7/1) 7.5X (15/2) 8.0X (8/1)
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
1
2
3
FS1 FS2 FS0
133MHz
33.3MHz/
44.3MHz
WARNING! Frequencies above 100MHz exceed the specifications for the on-
board Intel Chipset and are not guaranteed to be stable.