User Guide

Hardware Installation
2-6
The following table lists possible settings of current CPU available on the
market. Note that the correct setting may vary because of new CPU product,
please see to your CPU specification for more details.
CPU Type Vcore S4 S5 S6 S7 S8
INTEL P54C Single Voltage 3.45V OFF ON ON ON OFF
INTEL P55C Dual Voltage 2.8V OFF OFF OFF ON OFF
AMD K5 Single Voltage 3.52V ON ON ON ON OFF
AMD K6-166/200 Dual Voltage 2.9V ON OFF OFF ON OFF
AMD K6-233 Dual Voltage 3.2V OFF OFF ON ON OFF
AMD K6-266/300 Dual Voltage 2.2V OFF ON OFF OFF OFF
AMD K6-2 Dual Voltage 2.2V OFF ON OFF OFF OFF
AMD K6-2 400/450 Dual Voltage 2.4V OFF OFF ON OFF OFF
AMD K6-III Dual Voltage 2.4V OFF OFF ON OFF OFF
Cyrix 6x86 Single Voltage 3.52V ON ON ON ON OFF
Cyrix 6x86L Dual Voltage 2.8V OFF OFF OFF ON OFF
Cyrix M2 Dual Voltage 2.9V ON OFF OFF ON OFF
IDT C6 Single Voltage 3.52V
3.3V
ON
ON
ON
OFF
ON
ON
ON
ON
OFF
OFF
Warning: This high performance MX59 Pro motherboard
that AOpen presented to you has a capability to overclock to
124MHz external clock while still conforming the design
guide from VIA. This overclock scheme is accomplished by
AOpen's technical expertise as well as manufacturing
capabilities. However, please understand that some of the
add-on cards might not work with this board properly when
overclock scheme is engaged. Please use designated
speed when you encountered such a problem.
Warning: Note that overclocking may cause thermal
problem. Please make sure that the cooling fan and the
heatsink were adequate to dissipate excessive heat that's
generated by overclocking the CPU.
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.
Tip: For supporting more different CPUs in future, this
motherboard uses five switches to specify Vcore. There are