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18 ASUS P4T-EM User’s Manual
3. HARDWARE SETUP
3) CPU External Frequency Selection (SW1 Switches 1-5)
This option 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 Internal frequency (the advertised CPU speed). The system default is set
at 100/66/ 33.
®
P4T-EM
P4T-EM CPU
External Frequency Selection
CPU
AGP
PCI
SW1
100.0MHz
66.0MHz
33.0MHz
103.0MHz
68.0MHz
34.0MHz
105.0MHz
70.0MHz
35.0MHz
110.0MHz
73.0MHz
36.0MHz
CPU
AGP
PCI
ON
12345
ON
12345
ON
12345
ON
12345
Default
Setting
Motherboard Settings
3. H/W SETUP
WARNING! Set the CPU frequency only to the recommended settings.
Frequencies other than the recommended CPU bus frequencies are not guaranteed
to be stable. Overclocking the processor is not recommended. It may result in a
slower speed.
Frequency Table DSW
CPU AGP PCI 1 2 3 4 5
100 66 33 [ON] [OFF] [ON] [ON] [ON]
103 68 34 [OFF] [OFF] [ON] [ON] [ON]
105 70 35 [ON] [ON] [OFF] [ON] [ON]
110 73 36 [ON] [OFF] [OFF] [ON] [ON]