Asus P4B-MX Computer Hardware User Manual


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ASUS P4B-MX motherboard user guide
2-17
CPU frequency selection (SWITCH Switches 5-9)
This option tells the clock generator what frequency to send the CPU,
3V66, and PCI. 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).
Figure 2-21 CPU Frequency Settings
®
P4B-MX
P4B-MX CPU External
Frequency Selection
SW1801
CPUCLK
3V66
PCICLK
CPUCLK
3V66
PCICLK
105.00MHz
70.00MHz
35.00MHz
ON
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103.00MHz
68.67MHz
34.33MHz
ON
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114.00MHz
76.00MHz
38.00MHz
ON
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CPUCLK
3V66
PCICLK
143.00MHz
71.50MHz
35.75MHz
145.00MHz
72.50MHz
36.25MHz
150.00MHz
75.00MHz
37.5MHz
155.00MHz
77.50MHz
38.75MHz
160.00MHz
80.00MHz
40.00MHz
170.00MHz
85.00MHz
42.50MHz
66.67MHz
66.67MHz
33.34MHz
200.00MHz
66.67MHz
33.33MHz
ON
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ON
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ON
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ON
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ON
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ON
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ON
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ON
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120.00MHz
60.00MHz
30.00MHz
125.00MHz
62.50MHz
31.25MHz
134.90MHz
67.45MHz
33.73MHz
137.00MHz
68.50MHz
34.25MHz
139.00MHz
69.50MHz
34.75MHz
141.00MHz
70.50MHz
35.25MHz
CPUCLK
3V66
PCICLK
133.33MHz
66.67MHz
33.33MHz
ON
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ON
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ON
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ON
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ON
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ON
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ON
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CPUCLK
3V66
PCICLK
100.00MHz
66.67MHz
33.33MHz
ON
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190.00MHz
63.33MHz
31.67MHz
ON
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117.00MHz
78.00MHz
39.00MHz
ON
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120.00MHz
80.00MHz
40.00MHz
ON
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127.00MHz
84.67MHz
42.33MHz
ON
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130.00MHz
86.67MHz
43.33MHz
ON
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133.33MHz
88.89MHz
44.44MHz
ON
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170.00MHz
56.67MHz
28.33MHz
ON
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180.00MHz
60.00MHz
30.00MHz
ON
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107.00MHz
71.33MHz
35.67MHz
ON
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111.00MHz
74.00MHz
37.00MHz
ON
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109.00MHz
72.67MHz
36.33MHz
ON
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