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Pentium
Frequency
P54C 90
90MHz =
1.5x
P54C 100
100MHz =
1.5x
P54C 120
120MHz =
2x
P54C 133
133MHz =
2x
P54C 150
150MHz =
2.5x
P54C 166
166MHz =
2.5x
P54C 200
200MHz =
3x
INTEL
CPU Core
Ratio
Pentium
Frequency
MMX
PP/MT 150
150MHz =
2.5x
PP/MT 166
166MHz =
2.5x
PP/MT 200
200MHz =
3x
PP/MT 233
233MHz =
3.5x
Cyrix 6x86
CPU Core
Ratio
& 6x86L
Frequency
P150+
120MHz =
2x
P166+
133MHz =
2x
P200+
150MHz =
2x
Cyrix M2
CPU Core
Ratio
Frequency
MX-PR166
150MHz =
2.5x
MX-PR200
166MHz =
2.5x
150MHz=
2x
MX-PR233
200MHz =
3x
166MHz=
2x
MX-PR266
233MHz =
3.5x
AMD K5
CPU Core
Ratio
Frequency
PR90
90MHz =
1.5x
PR100
100MHz =
1.5x
PR120
90MHz =
1.5x
PR133
100MHz =
1.5x
PR166
116MHz =
1.75x
AMD K6
CPU Core
Ratio
Jumper Table Summary
Bus Clock
60MHz
OFF OFF OFF 2-3 & 1-2 & 1-2
66MHz
OFF OFF OFF 1-2 & 1-2 & 1-2
60MHz
ON
OFF OFF 2-3 & 1-2 & 1-2
66MHz
ON
OFF OFF 1-2 & 1-2 & 1-2
60MHz
ON
ON
OFF 2-3 & 1-2 & 1-2
66MHz
ON
ON
OFF 1-2 & 1-2 & 1-2
66MHz
OFF ON
OFF 1-2 & 1-2 & 1-2
External
S1
S2
S3
Bus Clock
60MHz
ON
ON
OFF 2-3 & 1-2 & 1-2
66MHz
ON
ON
OFF 1-2 & 1-2 & 1-2
66MHz
OFF ON
OFF 1-2 & 1-2 & 1-2
66MHz
OFF OFF OFF 1-2 & 1-2 & 1-2
External
S1
S2
S3
Bus Clock
60MHz
ON
OFF OFF 2-3 & 1-2 & 1-2
66MHz
ON
OFF OFF 1-2 & 1-2 & 1-2
75MHz
ON
OFF OFF 1-2 & 2-3 & 1-2
External
S1
S2
S3
Bus Clock
60MHz
ON
ON
OFF 2-3 & 1-2 & 1-2
66MHz
ON
ON
OFF
75MHz
ON
OFF
OFF
66MHz
OFF
ON
OFF
83.3MHz
ON
OFF
OFF
66MHz
OFF OFF OFF 1-2 & 1-2 & 1-2
External
S1
S2
S3
Bus Clock
60MHz
OFF OFF OFF 2-3 & 1-2 & 1-2
66MHz
OFF OFF OFF 1-2 & 1-2 & 1-2
60MHz
OFF OFF OFF 2-3 & 1-2 & 1-2
66MHz
OFF OFF OFF 1-2 & 1-2 & 1-2
66MHz
ON
ON
OFF 1-2 & 1-2 & 1-2
External
S1
S2
S3
JP4 & JP5 & JP6
JP4 & JP5 & JP6
JP4 & JP5 & JP6
1-2 & 1-2 & 1-2
1-2 & 2-3 & 1-2
1-2 & 1-2 & 1-2
2-3 & 1-2 & 2-3
JP4 & JP5 & JP6
JP4 & JP5 & JP6
C-3
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