Abit PD5NE User Manual page 23

Installing the Mainboard
2.CPU Voltage and Setup (SW2)
For the voltage of 586 serials of CPU, there are two kinds of operation
mode depend different CPUs, single voltage and dual voltage.
make sure which kind of CPU and the working voltage that you used
before you install.
of voltage for all serials of 586 CPUs, Please setup the Vcore voltage if
the CPU you are using is single voltage.
SW1 CPU Vcore / Vio settings
Vcore/Vio VC1
ON
3.5/3.3
3.4/3.3 ON
ON
3.3/3.3
3.2/3.38 ON
ON
2.9/3.38
2.8/3.38 ON
OFF
2.7/3.38
OFF
2.6/3.38
¡i Note ¡j
supply, the Vio of CPU voltage is design using linear regulator
power supply.
voltage drop without occure more heat and high temperature.
The linear power supply will occure more heat and temperature.
Please setup the Vio voltage smaller than Vcore voltage if the single
voltage CPU is installed, it is using to make sure the CPU voltage is
provided by Vcore (Switching Power Supply), and make the CPU
more stable.
The following table presents all of the adjustments
VCORE
VC2 VC3
ON ON
ON ON
ON OFF
ON OFF
OFF OFF
OFF OFF
ON ON
ON ON
The Vcore of CPU voltage is design using switching power
That is Vcore can provide more current and
VC4 VC5
ON OFF
OFF OFF
ON OFF
OFF OFF
ON OFF
OFF OFF
ON OFF
OFF OFF
VIO
VC6 VC7
OFF ON
OFF ON
OFF ON
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
2-15
Please
VC8
OFF
OFF
OFF
ON
ON
ON
ON
ON