User Guide

Hardware Installation
2-6
Following table lists possible settings of current CPU available on the market.
Note that the correct setting may vary because of new CPU product, refer 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 AX59 Pro motherboard that AOpen
presented to you has a capability to overclock to 112MHz 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 32 settings totally, and
the range is from 1.3V to 3.5V.