Quick Installation Guide
~2~
2
Setting CPU Frequency
The CPU frequency selection is set by going into:
BOIS Setup
à
Chipset Features Setup
à
CPU Clock Frequency
(The possible setting is 66, 68.5, 75, 83.3, 100, 103, 112 and 133.3 MHz)
BOIS Setup
à
Chipset Features Setup
à
CPU Clock Ratio
(The possible setting is 1.5x, 2x, 2.5x, 3x, 3.5x, 4x, 4.5x, 5x, 5.5x, 6x, 6.5x, 7x, 7.5x, and 8x)
Core frequency = Ratio * External bus clock
INTEL Pentium II
CPU Core Frequency
Ratio
External Bus Clock
Pentium II 233
233MHz =
3.5x
66MHz
Pentium II 266
266MHz =
4x
66MHz
Pentium II 300
300MHz =
4.5x
66MHz
Pentium II 333
333MHz =
5x
66MHz
Pentium II 350
350MHz =
3.5x
100MHz
Pentium II 400
400MHz =
4x
100MHz
Pentium II 450
450MHz =
4.5x
100MHz
Use <Home> Key to Clear CPU Frequency Setting
If your system hangs or fails to boot because of over-clocking, simply use <Home> key to
restore to the default setting (233MHz). By this smart design, it would be more convenient to
clear CPU frequency setting. For using this function, you just need to press <Home> key first
and then press Power button at the same time. Note that do not release <Home> key until
POST sreen appearing
.
Connecting CPU Fan
Plug in the fan cable to the 3-pin
CPU FAN
or
FAN
connector. Both of these two fan connectors support
hardware monitoring function, however, you can only use
the CPU FAN connector to control the fan power ON/OFF.
Battery-less Motherboard
To preserve the earth, AOpen AX6B implements the world first battery-less motherboard
design. There is no need to have battery for RTC (real time clock) and CMOS Setup as long
as ATX power cable is plugged. In case of the AC power is shutdown or power cord is
removed by accident, the CMOS Setup and system configuration can be restored from
EEPROM, only the system clock needed to be re-set to current date/time.
AGP Turbo
Although the specification of AGP is maximum 66Mhz
clock, you still could set JP23 to Enabled to force it
synchronize with bus clock. However, doing so may
probably cause your system unstable.
