User Guide

3-4 Chapter 3
CPU Operating Speed:
This option sets the CPU speed.
In this field, the CPU speed is indicated like this:
CPU speed = External clock * Multiplier factor, select the CPU speed according
the type and the speed of your CPU.
<Note 1> For Intel Pentium
®
II and Pentium
®
III MMX processors, you can
choose the following settings:
³ 233 (66*3.5) ³ 266 (66*4) ³300 (66*4.5)
³ 333 (66*5) ³ 350 (100*3.5) ³400 (100*4)
³ 450 (100*4.5) ³ 500 (100*5.0) …………
For Intel Celeron
™
MMX processors, you can choose the following
settings:
³266(66*4) ³300(66*4.5) ³300A(66*4.5)
³333(66*5.0) ³366(66*5.5) ³400(66*6)
³433(66*6.5) ……
<Note 2> User define external clock and multiplier factor:
³ User Define
î
îî
î External Clock:
³ 66MHz ³ 75MHz* ³ 83MHz* ³ 100MHz
³ 112MHz* ³ 124MHz* ³ 133MHz* …………
Note:
*Above 66MHz/100MHz bus speed supported but not guaranteed
due to the PCI and chipset specs.
î
îî
î Multiplier Factor:
You can choose the following multiplier factors:
³ 2.0 ³ 2.5 ³ 3.0 ³ 3.5 ³ 4.0
³ 4.5 ³ 5.0 ³ 5.5 ³ 6.0 ³6.5
³ 7.0 ³ 7.5 ³ 8.0 …………
However, differences will exist because of the various brands and
types available.
<Note 3> SEL100/66# Signal:
This default setting is “High” at 100MHz, and “Low” at 66MHz.
When you want to try a higher multiplier factor at 100MHz and
cannot chose it in “High” state, then you can set it to “Low” state.
Note:
According to Pentium
®
II/III processor types, some Pentium
®
II/III
processors will have locked up the multiplier factor and disable this
signal. In this situation, there is no way to choose the higher multiplier
factor.
<Note 4> AGPCLK/CPUCLK: