Abit AX5, Instruction Booklet

Page: 46 / 119

3-4 Chapter 3
CPU Operating Speed:
This option sets the CPU speed. Different CPU brands use different
techniques to indicate the CPU speed. For example, AMD and Cyrix use P-
Rating.
In this field, the CPU speed is indicated like this: CPU speed (external
clock x multiplier factor)
Select the CPU speed according the type and the speed of your CPU.
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Note 1
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For Intel Pentium CPUs, you can choose the following
settings:
ä
100 (66x1.5)
ä
120 (60x2)
ä
133 (66x2)
ä
150 (60x2.5)
ä
166 (66x2.5)
ä
200 (66x3)
ä
233 (66x3.5)
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Note 2
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For AMD-K5 CPUs from AMD, you can choose the
following P-Ratings:
ä
PR100 (66x1.5)
ä
PR133 (66x1.5)
ä
PR166 (66x2.5)
ä
PR200 (66x3)
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Note 2
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For AMD-K6 CPUs from AMD, you can choose the
following P-Ratings:
ä
166 (66x2.5)
ä
200 (66x3)
ä
233 (66x3.5)
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Note 3
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For Cyrix /IBM 6x86 and 6x86L CPUs, you can choose
the following P-Ratings:
ä
PR120+ (50x2)
ä
PR133+ (55x2)
ä
PR150+ (60x2)
ä
PR166+ (66x2)
ä
PR200 (75x2)
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Note 4
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User define external clock and multiplier factor:
ä
User Define
/
External Clock:
ä
50MHz
ä
55MHz
ä
60MHz
ä
66MHz
ä
75MHz
ä
83MHz
/
Multiplier Factor:
You can choose the following multiplier factors:
ä
1.5
ä
1.75
ä
2.0
ä
2.5
ä
3.0
ä
3.5
However, differences will exist because of the