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16 ASUS P2-99B User’s Manual
III. HARDWARE SETUP
Motherboard Settings
III. H/W SETUP
4. CPU External Frequency Selection (FS0, FS1, FS2, FS3)
This option tells the clock generator what frequency to send to the CPU, DRAM, and
440ZX AGPset. This allows the selection of the CPU’s External frequency. The CPU
External Frequency multiplied by the Frequency Multiple equals the CPU’s Internal
frequency (the advertised CPU speed).
P2-99B CPU
External Frequency Selection
R
P2-99B
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
150.0MHz
37.5MHz
123
140.0MHz
35.0MHz
123
133.00MHz
44.33MHz
123
133.0MHz
33.3MHz
123
124.0MHz
31.0MHz
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
5. CPU Core:External 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. These must be set in conjunction with the
CPU External Frequency.
P2-99B CPU Core-to-Bus Frequency Multiple Settings
R
P2-99B
BF1
BF2
BF0
BF3
2.0x(2/1)
1
2
3
2.5x(75/2) 3.0x(3/1) 3.5x(7/2)
BF1
BF2
BF0
BF3
BF1
BF2
BF0
BF3
BF1
BF2
BF0
BF3
4.0x(4/1)
BF1
BF2
BF0
BF3
6.5x(13/2)
BF1
BF2
BF0
BF3
1
2
3
6.0x(6/1)
BF1
BF2
BF0
BF3
5.5x(11/2)
BF1
BF2
BF0
BF3
5.0x(5/1)
BF1
BF2
BF0
BF3
4.5x(9/2)
BF1
BF2
BF0
BF3
1
2
3
7.0x(7/1)
BF1
BF2
BF0
BF3
7.5x(15/2)
BF1
BF2
BF0
BF3
8.0x(8/1)
BF1
BF2
BF0
BF3
WARNING! Frequencies above 100MHz exceed the specifications for the on-
board Intel Chipset and are not guaranteed to be stable.