3. Installing CPU & Housing Fan
5. Setting CPU Voltage & Frequency
Plug in the CPU fan cable to the 3-pin
CPUFAN1
connector. If you have chassis fan, you
can also plug it on
SYSFAN2
or
SYSFAN3
connector.
Setting CPU Core Voltage
This motherboard supports CPU VID function. The CPU core voltage will be automatically
detected and the range is from 1.1V to 1.85V. It is not necessary to set CPU Core Voltage.
Setting CPU Frequency
This motherboard is CPU jumper-less design, you can set CPU frequency through the
BIOS setup, and no jumpers or switches are needed.
BIOS Setup > Frequency / Voltage Control > CPU Speed Setup
Core Frequency = CPU FSB Clock * CPU Ratio
CPU Ratio
From 5.5x to 16.5x step 0.5x; 17x to 18x step 1x
CPU FSB (By manual
Adjustment)
FSB=100, 100~129 by 1MHz stepping adjustment technology
FSB=133, 130~160 by 1MHz stepping adjustment technology
FSB=166, 161~191 by 1MHz stepping adjustment technology
CPU
CPU Core Frequency
EV6 Bus Clock
Ratio
Athlon 1G
1GHz
200MHz
10.0x
Athlon 1.1G
1.1GHz
200MHz
11.0x
Athlon 1.2G
1.2GHz
200MHz
12.0x
Athlon 1.3G
1.3GHz
200MHz
13.0x
Athlon 1G
1GHz
266MHz
7.5x
Athlon 1.13G
1.13GHz
266MHz
8.5x
Athlon 1.2G
1.2GHz
266MHz
9.0x
Athlon 1.33G
1.33GHz
266MHz
10.0x
Athlon 1.4G
1.4GHz
266MHz
10.5x
AthlonXP 1500+
1.3GHz
266MHz
10.0x
AthlonXP 1600+
1.4GHz
266MHz
10.5x
AthlonXP 1700+
1.46GHz
266MHz
11.0x
AthlonXP 1800+
1.53GHz
266MHz
11.5x
AthlonXP 1900+
1.6GHz
266MHz
12.0x
AthlonXP 2000+
1.667GHz
266MHz
12.5x
AthlonXP 2100+
1.73GHz
266MHz
13x
AthlonXP 2200+
1.80GHz
266MHz
13.5x
AthlonXP 2400+
2.0GHz
266MHz
15x
AthlonXP 2600+
2.13GHz
266MHz
16x
AthlonXP 2700+
2.16GHz
333MHz
13x
AthlonXP 2800+
2.08GHz
333MHz
12.5x
Duron 800
800MHz
200MHz
8.0x
Duron 850
850MHz
200MHz
8.5x
Duron 900
900MHz
200MHz
9.0x
Duron 950
950MHz
200MHz
9.5x
Duron 1G
1GHz
200MHz
10.0x
Duron 1.1G
1.1GHz
200MHz
11.0x
Warning: VIA
®
Apollo KT400
chipset supports
166MHz FSB (with
performance
reaches maximum
333MHz EV6 system
bus) and 66MHz
AGP clock, higher
clock setting may
cause serious
system damage.
Note:
With CPU speed changing rapidly, there might be fastest CPU on the
market by the time you received this installation guide. This table is kindly for
your references only.
Tip: If your system hangs or fails to boot because of overclocking,
simply use <Home> key to restore the default setting or you can wait
the AOpen “Watch Dog Timer” reset the system in five seconds and
system will auto-detect hardware again.
Warning: Supposed you have had adjusted CPU ratio on your current CPU,
and you plan to replace a new CPU. Please use <Home> key or Clear CMOS
to restore the default setting when changing a new CPU, because the system
will still implement the previous CPU setting on the new one.
SYSFAN2 Connector
GND
+12V
Sensor
GND
+12V
Sensor
CPUFAN1 Connector
Note: Some CPU fans do not have
sensor pin, so that cannot support
fan monitoring.
GND
+12V
Sensor
SYSFAN3 Connector
4. JP20 CPU Host Clock Selection
This jumper is used to specify the relationship of PCI and FSB clock. Generally speaking, if
you are not overclockers, we recommend you to set it to the default setting. Additionally, this
motherboard also provides “
1MHz Stepping Adjustment
” feature for overclockers to adjust
CPU FSB frequency via BIOS setup program. Based on the CPU type, the adjustment range
has three levels: 100~129, 130~160 and 161~191MHz for your choosing. If you fix the CPU
FSB frequency by JP20, the “1MHz Stepping Adjustment” range will be changed and
following the JP20 setting.
Pin 1
JP20 CPU Host Clock
Select Jumper
1 2
FSB100
FSB133
FSB166
FSB200
