14
SW2:External Frequency Selection
CPU
1 2
100MHz
ON ON
133MHz
OFF OFF
This potion tells the clock generator what frequency to send to the CPU,
DRAM and the PCI bus. This allows the selection of the CPU’s External
Frequency(or Bus Clock). The Bus Clock multiplied by the Frequency Multiple
equals the CPU’s Intemal frequency (the advertifed cpu speed).
The following list contains the standard settings for the AMD Athlon and
Duron CPUs known at time of publication:
CPU Name
Multiplier
Bus Frequency
Athlon 1.2GHz
12.0x
100MHz
Athlon 1.2GHz
9.0x
133MHz
Athlon 1.13GHz
8.5x
133MHz
Athlon 1GHz
7.5x
133MHz
Athlon 1GHz
10.0x
100MHz
Athlon 950MHz
9.5x
100MHz
Athlon 900MHz
9.0x
100MHz
Athlon 850MHz
8.5x
100MHz
Athlon 800MHz
8.0x
100MHz
Athlon 750MHz
7.5x
100MHz
Athlon 700MHz
7.0x
100MHz
Athlon 650MHz
6.5x
100MHz
Athlon 600MHz
6.0x
100MHz
Duron 700MHz
7.0x
100MHz
Duron 650MHz
6.5x
100MHz
Duron 600MHz
6.0x
100MHz