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Hardware Installation
2-4
2.2  Jumpers
With  the  help  of  Celeron  PPGA  VID  signal  and  SMbus,  this  motherboard  is
jumper-less design.
2.2.1 Selecting the CPU Frequency
Celeron  PPGA  VID  signal  and  SMbus  clock  generator  provide  CPU  voltage
auto-detection and allow user to  set  CPU  frequency through  CMOS  setup,  no
jumper  or  switch  is  needed.  The  correct  CPU  information  is  saved  into
EEPROM, with these technologies, the disadvantages of Pentium base jumper-
less  design  are  eliminated.  There  will  be  no  worry  of  wrong  CPU  voltage
detection and no need to re-open the housing if CMOS battery loss.
The CPU frequency selection is set by going into:
BOIS Setup à Frequency/Voltage Control à CPU FSB
(The possible setting is 66.8, 72, 75, 83.3, 90, 95, 100.2, 105, 107, 110, 112,
114, 117, 119, 121, 124, 125, 127, 129, 130, 133.6, 136, 138, 140, 145, 150,
and 155 MHz.)
BOIS Setup à Frequency/Voltage Control à CPU Ratio
(The possible setting is 3.0x, 3.5x, 4x, 4.5x, 5x, 5.5x, 6x, 6.5x, 7x, 7.5x, and 8x)
Core frequency = CPU Ratio * CPU FSB
INTEL Celeron PPGA
CPU Core Frequency
CPU Ratio
CPU FSB
Celeron PPGA 300A
300MHz=
4.5x
66MHz
Celeron PPGA 333
333MHz=
5x
66MHz
Celeron PPGA 350
350MHz=
3.5x
100MHz
Celeron PPGA 366
366MHz=
5.5x
66MHz
Celeron PPGA 400
400MHz=
6x
66MHz
Celeron PPGA 433
433MHz=
6.5x
66MHz
Warning: INTEL  810  chipset  supports  a  maximum  of  100MHz
CPU  FSB,  the  higher  clock  settings  are  for  internal  test  only.
These settings exceed the specification of the chipset, which
may cause serious system damage
.