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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!!) 
 
 
 
 
 
 
 
16
 
 
 
 
 
 
 
AMD CPU 
CPU Core Freq. 
CPU Clock 
L2 Cache 
Ratio 
Athlon 64 2800+ 
1800MHz 
200MHz 
512KB 
9x 
Athlon 64 3000+ 
2000MHz 
200MHz 
512KB 
10x 
Athlon 64 3200+ 
2000MHz 
200MHz 
1024KB 
10x 
Athlon 64 3200+ 
2200MHz 
200MHz 
512KB 
11x 
Athlon 64 3400+ 
2200MHz 
200MHz 
1024KB 
11x 
Athlon 64 3400+ 
2400MHz 
200MHz 
512KB 
12x 
Athlon 64 3700+ 
2400MHz 
200MHz 
1024KB 
12x 
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 
 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. 
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 . 
CPU Ratio 
From 4x to 25x step 1x 
CPU FSB (Adjustment 
manually) 
FSB = 200 MHz-250 MHz by 1 MHz Stepping CPU Overclocking 
 Warning:
   
NVidia nForce3 250 
chipset supports 
maximum 200MHz 
system clock and 
66MHz AGP clock; 
higher clock setting 
may cause serious 
system damage.