If you see in the bios an option to change the cpu bus speed, if you increase that, it will over clock your cpu, but it also raises the speed of the memory. Mine is for example
will use the AMD 6400+ as example
CPU Multiplier Bus Speed CPU Speed Memory speed
x16 x 200MHz = Stock 3.2GHZ 800MHz
x16 x 212MHz = OC 3.392GHZ 848Mhz
Bus Speed x 4 is what you use to get Mem speed
This is assuming your using DDR2 memory.
Now if you happen to be running a Black Edition processor (unlocked) you can actually up the speed of the memory with out really changing the cpu speed by changing the multiplier and doing some math. Example
X16 x 200Mhz = 3.200GHz @ 800MHz memory speed
X15 x 214Mhz = 3.210GHz @ 856MHz memory speed
So Cpu Multiplier X Bus = Cpu speed
Bus X 4 = Mem Speed
If your going to change the memory speeds like this you might have to apply a little more voltage to the ram to allow it to stay stable. you also need to watch the temps on the cpu when you start to over clock it. Hope this helps a little.
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