Jp29/Jp23 Fsb/Pci Clock Ratio - AOpen MX34 Easy Installation Manual

3. Installing CPU and Fan
Plug CPU to Socket370 connector. Be careful of
CPU orientation. Plug in the fan cable to the 3-pin
CPUFAN or FAN connector.
Auto-Dectect CPU Core Voltage
This motherboard supports Celeron / Pentium III CPU VID function. The CPU
core voltage will be automatically detected and the range is from 1.3V to 3.5V.
Setting CPU Frequency
The CPU frequency selection is set by going into:
BIOS Setup > Chipset Features Setup > CPU Clock Ratio
1.5x, 2x, 2.5x, 3x, 3.5x, 4x, 4.5x, 5x, 5.5x, 6x, 6.5x, 7x, 7.5x, and 8x
CPU Ratio
66.8, 75, 83.3, 100, 103, 105, 110, 112, 115, 120, 124, 133,
CPU FSB
140, and 150 MHz.
Core Frequency = CPU FSB Clock * CPU Ratio
CPU CPU Core Frequency
CELERON 300A 300MHz
CELERON 600 600MHz
CELERON 700 700MHz
CELERON 800 800MHz
CELERON 850 850MHz
Pentium!!! 700E 700MHz
Pentium!!! 750E 750MHz
Pentium!!! 800E 800MHz
Pentium!!! 850E 850MHz
Pentium!!! 733EB 733MHz
Pentium!!! 866EB 866MHz
Pentium!!! 933EB 866MHz
Pentium!!! 1G 1GHz
Pentium!!! 1.13G 1.13GHz
GND
+12V
SENSOR
Note: Some CPU fans do not have
sensor pin, so that cannot support
fan monitoring.
FSB Clock Ratio
66MHz 4.5x
66MHz 9x
66MHz 10.5x
100MHz 8x
100MHz 8.5x
100MHZ 7x
100MHZ 7.5x
100MHZ 8x
100MHZ 8.5x
133MHZ 5.5x
133MHZ 6.5x
133MHZ 7x
133MHZ 7.5x
133MHz 8.5

4. 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
JP29 JP23
JP29 JP23
5
1
6
2
Auto 4X
(default) (133~150MHz)
Clock Ratio CPU (Host)
2X 66
3X 100
3X, overclocking 112
4X 133
4X, overclocking 150
Warning: VIA 694x chipset supports maximum 133MHz FSB and
66MHz AGP clock, higher clock setting may cause serious system
damage.
Home
JP23
JP29 JP23 JP29 JP23
3X
(100~124MHz) (66~83MHz)
PCI AGP Memory
33 66 PCI x2 or x3
33 66 PCI x2 or x3 or x4
37.3 74.6 PCI x2 or x3 or x4
33 66 PCI x3 or x4
37.5 75 PCI x3 or x4
Tip: If your system hangs or fails to boot
because of overclocking, simply use
<Home> key to restore the default setting
(233MHz).
2X