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3. Installing CPU & Housing Fan
Plug in the CPU fan cable to the 3-pin CPUFAN connector. If you have chassis fan, you
can also plug it on SYSFAN1 or SYSFAN2 connector.
GND
+12V
SENSOR
SYSFAN2 Connector
4. JP21 K7 Host Clock Selection
This jumper is used to specify the relationship of PCI and FSB clock. Generally speaking, if
you are not an over-clocker, 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. If you fix the CPU FSB frequency by
JP21, the "1MHz Stepping Adjustment" range will be changed to 100MHz~248MHz.
SYSFAN1 Connector
GND
+12V
SENSOR
GND
+12V
SENSOR
CPUFAN Connector
Note: Some CPU fans do not have
sensor pin, so that cannot support
fan monitoring.
Pin 1
JP21 K7 Host Clock
1
Select Jumper
1
Auto detect
100MHz
(default)
5. Setting CPU Voltage & Frequency
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 5x to 18x step 0.5x
CPU FSB (By manual
100~248 by 1MHz stepping adjustment technology
Adjustment)
CPU
Core
CPU
Frequency
Athlon 1.33G
1.33GHz
Athlon 1.4G
1.4GHz
AthlonXP 1500+
1.3GHz
AthlonXP 1600+
1.4GHz
AthlonXP 1700+
1.46GHz
AthlonXP 1800+
1.53GHz
AthlonXP 1900+
1.6GHz
AthlonXP 2000+
1.667GHz
AthlonXP 2100+
1.73GHz
AthlonXP 2200+
1.80GHz
AthlonXP 2400+
2.0GHz
AthlonXP 2500+ (Barton)
1.833GHz
AthlonXP 2600+
2.13GHz
AthlonXP 2600+
2.08GHz
AthlonXP 2700+
2.16GHz
AthlonXP 2800+ (Barton)
2.083GHz
AthlonXP 3000+ (Barton)
2.167GHz
AthlonXP 3200+ (Barton)
2.2GHz
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.
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.
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 ABS" reset
the system in five seconds and system will auto-detect hardware again.
EV6 Bus Clock
Ratio
266MHz
10.0x
266MHz
10.5x
Warning:
266MHz
10.0x
Apollo
266MHz
10.5x
266MHz
11.0x
chipset
supports
266MHz
11.5x
200MHz FSB (with
266MHz
12.0x
266MHz
12.5x
performance
266MHz
13x
266MHz
13.5x
reaches maximum
266MHz
15x
400MHz
333MHz
11x
266MHz
16x
system bus) and
333MHz
12.5x
66MHz AGP clock,
333MHz
13x
333MHz
12.5x
higher clock setting
333MHz
13x
may cause serious
400MHz
11x
system damage.
®
VIA
KT600
EV6
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