Plug in the CPU fan cable to the 3-pin
CPU FAN
connector. If you have chassis fan, you
can also plug it on
System Fan
(FAN2) or
FAN3
(AUX Fan)
connector.
CPU Ratio
8x, 9x, 10x… 21x, 22x, 23x, 24x
CPU FSB
100~248MHz
Northwood CPU
CPU Core Frequency
FSB Clock
System Bus
Ratio
Pentium 4 1.6G
1600MHz
100MHz
400MHz
16x
Pentium 4 1.6G
1600MHz
133MHz
533MHz
12x
Pentium 4 1.7G
1700MHz
133MHz
533MHz
13x
Pentium 4 1.8G
1800MHz
100MHz
400MHz
18x
Pentium 4 2.0G
2000MHz
100MHz
400MHz
20x
Pentium 4 2.2G
2200MHz
100MHz
400MHz
22x
Pentium 4 2.4G
2400MHz
100MHz
400MHz
24x
Pentium 4 2.4G
2400MHz
133MHz
533MHz
18x
Willamette CPU
CPU Core Frequency
FSB Clock
System Bus
Ratio
Pentium 4 1.5G
1500MHz
100MHz
400MHz
15x
Pentium 4 1.6G
1600MHz
100MHz
400MHz
16x
Pentium 4 1.7G
1700MHz
100MHz
400MHz
17x
Pentium 4 1.8G
1800MHz
100MHz
400MHz
18x
Pentium 4 1.9G
1900MHz
100MHz
400MHz
19x
Pentium 4 2.0G
2000MHz
100MHz
400MHz
20x
5. Setting CPU Voltage & Frequency
CPU Core Voltage Auto Detectable
The CPU core voltage will be automatically detected. 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 Setting
Core Frequency = CPU FSB Clock * CPU Ratio
Note: Some CPU fans do not
have sensor pin so they cannot
support fan monitoring.
CPU Fan Connector
Warning: Intel
®
845 G chipset
supports maximum 400/533MHz
(100/133MHz*4) system bus and
66MHz AGP clock; higher clock
setting may cause serious
system damage.
3. Installing CPU & System Fan
FAN2 Connector
GND
+12V
SENSOR
FAN3 Connector
GND
+12V
SENSOR
4. Connecting Front Panel Cable
Attach the power LED, speaker, and reset switch connectors to
the corresponding pins. If you enable “Suspend Mode” item in
BIOS Setup, the ACPI & Power LED will keep flashing while the
system is in suspend mode.
Locate the power switch cable from your ATX housing. It is
2-pin female connector from the housing front panel. Plug this
connector to the soft-power switch connector marked
SPWR
.
1
Speaker
IDE LED
SPWR
ACPI & PWR
LED
Reset
1
5VSB
SPWR
ACPI LED-
GND
ACPILED
NC
NC
GND
RESET
GND
NC
NC
+5V
IDE LED
IDE LED
+5V
+5V
GND
NC
SPEAKER
Note: Since the latest processor,
Northwood, would detect the
clock ratio automatically, you
may not be able to adjust the
clock ratio in BIOS manually.
FAN3 Connector
SENSOR
+12V
GND
Pin 1
