Abit IT5 Series, User Manual

Page: 47 / 110

Introduction of BIOS 3-9
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When the CPU is single voltage, the following options will be
displayed to set up the voltage:
/
Plane voltage:
ä
3.52v
：
For Intel VRE standard CPUs and AMK-K5 or Cyrix
8x86 CPUs
ä
3.38v
：
For Intel STD and VR standards CPUs
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When the CPU is dual voltage , two options will be displayed to set
up Vcore and Vio plane voltage
/
Core Plane Voltage:
ä
2.90v
：
For AMD K6/200 CPU.
ä
2.80v
：
For Intel Pentium MMX, Cyrix 6x86L and 6x86MX
CPU.
ä
2.70v
：
For future CPUs.
ä
2.50v
：
For future CPUs. (If hardware supports.)
ä
3.20v
：
For AMD K6/233 and future CPUs. (If hardware
supports.)
/
I/O Plane Voltage:
ä
3.52v
：
Reserved
ä
3.38v
：
Some CPUs from AMD need this I/O Plane Voltage.
ä
3.30v
：
For most of the dual voltage CPUs (default) currently
available.
The CPU voltage must be set according to voltage indications via CPU
Marking given by the manufacturer. Since the CPU voltage will decrease as
technology improves, we have reserved some options according to what we
can forecast from present documentation. We cannot give you detailed
information about the voltage required by each kind of CPU in this chapter.
For the correct values, refer to appendices B, C and D.
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Set up the voltage via CPU Marking:
If you consider using the Appendices to set up as too complicated, you
can use the CPU Marking: within the options under
“
CPU Marking
Is,
”
set up via CPU Marking on the CPU.