Table of Contents
Advertisement
Jumper Table Summary
INTEL P54C
INTEL MMX P55C
AMD K5
AMD K6-166/200
AMD K6-233
AMD K6-266/300
Cyrix 6x86
Cyrix 6x86L
Cyrix M2
IDT C6
Selecting the CPU Frequency
S1
S2
S3
OFF
OFF
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
ON
OFF
ON
ON
ON
ON
OFF
ON
ON
Note: Intel PP/MT MMX 233MHz is using 1.5x jumper setting for
3.5x frequency ratio, and AMD PR166 is using 2.5x setting for
1.75x frequency ratio.
Warning: INTEL TX chipset supports only 60/66MHz external
CPU bus clock, the 75/83.3MHz settings are for internal test only,
set to 75/83.3MHz exceeds the specification of TX chipset,
which may cause serious system damage.
Warning: Cyrix 6x86 P200+ uses 75MHz external clock, the
jumper setting shown on the table below is for user's convenient.
It may cause serious system damage to use 75MHz clock.
Warning: Although you may set 75MHz x 2 for Cyrix MX-PR200
and 83.3MHz x 2 for Cyrix MX-PR233, note that 75/83.3MHz
settings may probably cause serious system damage.
INTEL
CPU Core
Pentium
Frequency
C-2
Single Voltage
OFF
Dual Voltage
OFF
Single Voltage
ON
Dual Voltage
ON
Dual Voltage
OFF
Dual Voltage
OFF
Single Voltage
ON
Dual Voltage
OFF
Dual Voltage
ON
Single Voltage
OFF
CPU Frequency
Ratio
1.5x (3.5x)
2x
2.5x (1.75x)
3x
4x
4.5x
5x
Ratio
External
Bus Clock
ON
ON
ON
OFF
OFF
ON
ON
ON
ON
OFF
OFF
ON
OFF
ON
ON
ON
OFF
OFF
ON
ON
ON
OFF
OFF
ON
OFF
OFF
ON
ON
ON
ON
JP4
JP5
JP6
1-2
2-3
1-2
2-3
1-2
1-2
1-2
2-3
2-3
2-3
1-2
2-3
S1
S2
S3
JP4 & JP5 & JP6
OFF
3.45V
OFF
2.8V
OFF
3.52V
OFF
2.9V
OFF
3.2V
OFF
2.2V
OFF
3.52V
OFF
2.8V
OFF
2.9V
OFF
3.45V
CPU External
Clock
60MHz
66MHz
75MHz
83.3MHz
Advertisement
Table of Contents
