Jp29/Jp23 Fsb/Pci Clock Ratio - AOpen AX34 Easy Installation Manual

Installing CPU and Fan
Plug CPU to Socket 370 connector. Be careful of
CPU orientation. Plug in the fan cable to the 3-pin
CPUFAN or FAN connector.
Note: Some CPU fans do not have
sensor pin, so that cannot support
fan monitoring.
Setting CPU Frequency
The CPU frequency selection is set by going into:
BIOS Setup > Chipset Features Setup > CPU Voltage Setting
CPU Ratio 1.5x, 2x, 2.5x, 3x, 3.5x, 4x, 4.5x, 5x, 5.5x, 6x, 6.5x, 7x, 7.5x, and 8x
66.8, 75, 83.3, 100, 103, 105, 110, 112, 115, 120, 124, 133, 140,
CPU FSB
and 150 MHz.
Core Frequency = CPU FSB Clock * CPU Ratio
CPU CPU Core Frequency
CELERON 300A 300MHz
CELERON 533 533MHz
CELERON 600 600MHz
CELERON 667 667MHz
CELERON 700 700MHz
CELERON 733 733MHz
Pentium!!! 600E 600MHz
Pentium!!! 700E 700MHz
Pentium!!! 800E 800MHz
Pentium!!! 850E 850MHz
Pentium!!! 733EB 733MHz
Pentium!!! 866EB 866MHz
Pentium!!! 933EB 933MHz
Pentium!!! 1G 1000MHz
Pentium!!! 1.13G 1133MHz
Pentium!!! 1.2G 1200MHz
GND
+12V
SENSOR
FSB Clock Ratio
66MHz 4.5x
66MHz 8.0x
66MHz 9.0x
66MHz 10.0x
66MHz 10.5x
66MHz 11.0x
100MHZ 6.0x
100MHZ 7.0x
100MHZ 8.0x
100MHZ 8.5x
133MHZ 5.5x
133MHZ 6.5x
133MHz 7x
133MHz 7.5x
133MHz 8.5x
133MHz 9.0x

JP29/JP23 FSB/PCI Clock Ratio

This jumper is used to specify the relationship of PCI and
FSB clock. Generally speaking, we suggest you do not
change the default setting. But for overclocking, changing
these jumper settings becomes necessary. For example,
you must set JP29 to "5-6" and JP23 to "3-4" if you want to
overclock a 66MHz FSB clock CPU to 100MHz or higher.
JP29 JP23 JP29 JP23
1 2 1 2 1 2
1 2
5 6
5 6 5 6 5 6
Auto 4X
(default) (133~150MHz)
Clock Ratio CPU (Host) PCI
2X 66 33
3X 100 33
3X, overclocking 112 37.3
4X 133 33
4X, overclocking 150 37.5
Warning: VIA 694x chipset supports maximum 133MHz FSB and
66MHz AGP clock, higher clock setting may cause serious system
damage.
Tip: If your system hangs or fails to boot
because of overclocking, simply use
Home
<Home> key to restore the default setting
(233MHz).
JP29 JP23 JP29 JP23
1 2
1 2
1 2
1 2
5 6 5 6
5 6
5 6
3X 2X
(100~124MHz) (66~83MHz)
AGP Memory
66 PCI x2 or x3
66 PCI x2 or x3 or x4
74.6 PCI x2 or x3 or x4
66 PCI x3 or x4
75 PCI x3 or x4