C-1
Appendix C
Jumper Table Summary
Setting the CPU Voltage
S4
ON
OFF
OFF
ON
OFF
OFF
OFF
S5
ON
ON
OFF
OFF
OFF
ON
ON
S6
ON
ON
ON
OFF
OFF
OFF
OFF
S7
ON
ON
ON
ON
ON
OFF
ON
S8
OFF
OFF
OFF
OFF
OFF
OFF
ON
CPU Core Voltage
3.52V (Cyrix 6x86 or AMD K5)
3.45V (Intel P54C or IDT C6)
3.2V (AMD K6-233)
2.9V (K6-166/200 or M2)
2.8V (Intel P55C)
2.2V (AMD K6-266/300)
1.8V (For future use)
CPU
Type
S4
S5
S6
S7
S8
Vcore
INTEL P54C
Single Voltage
OFF
ON
ON
ON
OFF
3.45V
INTEL MMX P55C
Dual Voltage
OFF
OFF
OFF
ON
OFF
2.8V
AMD K5
Single Voltage
ON
ON
ON
ON
OFF
3.52V
AMD K6-166/200
Dual Voltage
ON
OFF
OFF
ON
OFF
2.9V
AMD K6-233
Dual Voltage
OFF
OFF
ON
ON
OFF
3.2V
AMD K6-266/300
Dual Voltage
OFF
ON
OFF
OFF
OFF
2.2V
Cyrix 6x86
Single Voltage
ON
ON
ON
ON
OFF
3.52V
Cyrix 6x86L
Dual Voltage
OFF
OFF
OFF
ON
OFF
2.8V
Cyrix M2
Dual Voltage
ON
OFF
OFF
ON
OFF
2.9V
IDT C6
Single Voltage
OFF
ON
ON
ON
OFF
3.45V
Warning: Make sure that you have installed CPU fan properly if
Intel PP/MT-233 or AMD K6 is being selected to use. It may
cause your system unstable if you can not meet the heat
dissipation requirement from above CPU. It is recommended to
adopt larger fan on these CPU for better air flow in the system.
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