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A-1
Appendix A
Jumper Table Summary
Setting the CPU Voltage
JP11
1-2
3-4
5-6
7-8
9-10
11-12
CPU Core Voltage (Vcore)
3.45V (Intel P54C or IDT C6)
3.52V (Cyrix or AMD K5)
2.9V (AMD K6-166/200 or Cyrix M2)
2.8V (MMX P55C)
3.2V (AMD K6-233)
2.5V/2.2V/2.0V (Reserved)
Warning: Please make sure that you have installed CPU fan
properly if Intel PP/MT-233 or AMD K6-200/233 is being
selected to use. It may cause your system unstable if you can
not meet the heat dissipation requirement from above CPU
type. It is recommended to adopt larger fan on these CPU for
better air flow in the system.
properly if Intel PP/MT-233 or AMD K6-200/233 is being
selected to use. It may cause your system unstable if you can
not meet the heat dissipation requirement from above CPU
type. It is recommended to adopt larger fan on these CPU for
better air flow in the system.
Tip: Normally, for single voltage CPU, Vcpuio (CPU I/O
Voltage) is equal to Vcore, but for CPU that needs dual
voltage such as PP/MT (P55C) or Cyrix 6x86L, Vcpuio is
different from Vcore and must be set to Vio (PBSRAM and
Chipset Voltage). The single or dual voltage CPU is
automatically detected by hardware circuit.
Voltage) is equal to Vcore, but for CPU that needs dual
voltage such as PP/MT (P55C) or Cyrix 6x86L, Vcpuio is
different from Vcore and must be set to Vio (PBSRAM and
Chipset Voltage). The single or dual voltage CPU is
automatically detected by hardware circuit.
Tip: JP11 pin 11-12 is reserved for future CPU, the most
possible value is 2.0V. It is not yet decided when this manual
is printed. Use voltage meter or check your distributor before
you use pin 11-12.
possible value is 2.0V. It is not yet decided when this manual
is printed. Use voltage meter or check your distributor before
you use pin 11-12.
CPU
Type
JP11
Vcore