This jumper is used to specify the relationship of PCI and FSB clock. Generally speaking, i
you are not an overclocker, we recommend you to set at the default setting.
Plug in the CPU fan cable to the 3-pin CPUFAN connector. If you have a housing fan,
you can also plug it on FAN2 connector.
1 2
1 2
1 2
JP23 FSB Select Jumper
CPU Core Voltage Auto-Detection
This motherboard supports CPU VID function. 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 Host Clock (CPU/PCI)
Core Frequency = CPU FSB Clock * CPU Ratio
CPU Ratio
3x, 3.5x, 4x, 4.5x, …16x
CPU FSB
66.8, 75, 83.3, 100, 103, 105, 110, 112, 115, 120, 124, 133, and 150MHz
CPU CPU Core Frequency FSB Clock Ratio
Celeron 533 533MHz 66MHz 8x
Celeron 566 566MHz 66MHz 8.5x
Celeron 600 600MHz 66MHz 9x
Celeron 667 667MHz 66MHz 10x
Celeron 700 700MHz 66MHz 10.5x
Celeron 800 800MHz 100MHz 8x
Celeron 900 900MHz 100MHz 9x
Celeron 1.2G 1.2GHz 100MHz 12x
Pentium III 800E 800MHz 100MHz 8x
Pentium III 850E 850MHz 100MHz 8.5x
Pentium III 533EB 533MHz 133MHz 4x
Pentium III 600EB 600MHz 133MHz 4.5x
Pentium III 667EB 667MHz 133MHz 5x
Pentium III 733EB 733MHz 133MHz 5.5
Pentium III 800EB 800MHz 133MHz 6x
Pentium III 866EB 866MHz 133MHz 6.5
Pentium III 933EB 933MHz 133MHz 7x
Pentium III 1G 1000MHz 133MHz 7.5x
Pentium III 1.13G 1.13GHz 133MHz 8.5x
Pentium III 1.2G 1.2GHz 133MHz 9x
Pentium III 1.3G 1.3GHz 133MHz 10x
5. Setting CPU Voltage & Frequency
4. JP23 Adjust FSB/PCI Clock
3. Installing CPU & Housing Fan
Home
Tip: If your system hangs or fails to boot because of overclocking,
simply use <Home> key to restore the default setting.
Warning: VIA PLE133 chipset supports maximum
133MHz FSB, higher clock setting may cause
serious system damage.
Note: Some CPU fans do not have
sensor pin, so that they cannot
support fan monitoring.
CPUFAN
FAN2
FSB=66MHz
FSB=100MHz
FSB=133MHz
Auto
Detection
(Default)
1 2
GND
+12V
SENSOR