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Hardware Installation
2.2 Jumpers
With the help of Pentium II / Pentium III / Celeron VID signal and SMbus, this
motherboard is jumper-less design.
2.2.1 Selecting the CPU Frequency
Pentium II / Pentium III / Celeron VID signal and the SMbus clock generator
provide CPU voltage auto-detection and allow the user to set CPU frequency
through the CMOS setup, no jumpers or switches are needed. The correct CPU
information is saved into the EEPROM. With these technologies, the
disadvantages of the Pentium based jumper-less design are eliminated. There
will be no worry of wrong CPU voltage detection and no need to re-open the
housing if the CMOS battery is lost.
The CPU frequency selection is set by going into:
BOIS Setup à Chipset Features Setup à CPU Clock Frequency
(The possible setting is 66.8, 68.5, 75, 83.3, 100, 103, 112, 117, 124, 129,
133.3, 138, 143, 148 and 153 MHz)
BOIS Setup à Chipset Features Setup à CPU Clock Ratio
(The possible setting is 1.5x, 2x, 2.5x, 3x, 3.5x, 4x, 4.5x, 5x, 5.5x, 6x, 6.5x, 7x,
7.5x, and 8x)
Core frequency = Ratio * External bus clock
INTEL Pentium II
CPU Core Frequency
Pentium II - 233
233MHz =
Pentium II - 266
266MHz =
Pentium II - 300
300MHz =
Pentium II - 333
333MHz =
Pentium II - 350
350MHz =
Pentium II - 400
400MHz =
Pentium II - 450
450MHz =
Pentium III - 450
450MHz =
Pentium III - 500
500MHz =
Pentium III - 550
550MHz =
Celeron 266
266MHz =
Celeron 300
300MHz =
Celeron 300A
300MHz =
2-4
Ratio
External Bus Clock
3.5x
66MHz
4x
66MHz
4.5x
66MHz
5x
66MHz
3.5x
100MHz
4x
100MHz
4.5x
100MHz
4.5x
100MHz
5x
100MHz
5.5x
100MHz
4x
66MHz
4.5x
66MHz
4.5x
66MHz
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