Other Installation For Your Reference; Setting Cpu Voltage And Frequency - AOpen n250a-FR Manual

3.3 Other Installation for Your Reference

Setting CPU Voltage and Frequency

Setting CPU Core Voltage
This motherboard supports Voltage ID (VID) function to detect CPU voltage
automatically during power-on. However, if users are willing to do overclocking,
we also provide a range from 0.80V to 1.55V in the BIOS. Sometimes increasing
the original core voltage a little bit will make CPU overclock more properly.
Setting CPU Frequency
This motherboard is of CPU jumper-less design; you can set CPU frequency by
1MHz stepping CPU Overclocking in the BIOS. CPU Core Frequency = CPU FSB
clock x CPU Ratio. However, all CPU now sold in market belong to "Fixed
Multiplier". That means users can not adjust the CPU Ratio but change CPU FSB
clock to achieve overclocking only.
BIOS Setup > Frequency / Voltage Control > CPU Speed Setup
(Users will do the overclocking at their own risks!!)
AMD CPU
Athlon 64 2800+
Athlon 64 3000+
Athlon 64 3200+
Athlon 64 3200+
Athlon 64 3400+
Athlon 64 3400+
Athlon 64 3700+
Note: With CPU speed changing rapidly, there might be faster CPU on the
market by the time you received this installation guide. This table is kindly
for your references only, please contact with your distributor for more
information
Note:
If your system hangs or fails to boot because of overclocking, simply use
<Home> key to restore the default setting or you can wait the AOpen "Watch Dog
ABS" reset the system in five seconds and system will auto-detect hardware again .
Warning:
Supposed you have had adjusted CPU ratio on your current CPU,
and you plan to replace a new CPU. Please use <Home> key or Clear CMOS to
restore the default setting when changing a new CPU, because the system will still
implement the previous CPU setting on the new one.
CPU Ratio
CPU FSB (Adjustment
manually)
CPU Core Freq. CPU Clock
1800MHz
2000MHz
2000MHz
2200MHz
2200MHz
2400MHz
2400MHz
From 4x to 25x step 1x
FSB = 200 MHz-250 MHz by 1 MHz Stepping CPU Overclocking
L2 Cache
200MHz 512KB
200MHz 512KB
200MHz 1024KB
200MHz 512KB
200MHz 1024KB
200MHz 512KB
200MHz 1024KB
16
Warning:
Ratio
NVidia nForce3 250
chipset supports
9x
maximum 200MHz
10x
system clock and
10x
66MHz AGP clock;
11x
higher clock setting
may cause serious
11x
system damage.
12x
12x