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Overclocking Explained (Technical)?

Last response: in Overclocking
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October 26, 2011 4:06:24 PM

Will someone please explain to me how overclocking works? At the very ground level. How does changing the multiplier and increasing the voltage result in more speed. Id like to understand it for both CPU and Memory, if its not the same. Again, Id like to understand how and why it works. Not how to do it.

Thanks in advance.
October 26, 2011 7:21:13 PM

Anyone?
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October 27, 2011 2:11:34 PM

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October 27, 2011 3:29:29 PM

Base clock times multiplier gives you total clock speed.

Increase base clock and/or multiplier will increase total clock speed.

Set base clock faster and higher multiplier until it no longer stable. Make small increments and test.

You can increase clock without increase voltage, but you need extra voltage to push the base clock up a fair amount. This increase heat and needs cooling.

We can overclock because while the cpu can run faster, it needs higher voltage which exceed factory electrical and thermal requirement. It cannot be binned into the next higher lot of cpu. Only the ones that can achieved higher clock with the factory voltage will be binned to higher lot.

Therefore, oc is a lottery. It depends how much headroom your cpu has to give you to work with and it varies between individual cpu.
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a b K Overclocking
October 27, 2011 4:44:10 PM

Every CPU has a speed... in which to allow input and output of Ones and Zero's to be looked at and processed... this is Clock Speed and can be measured in time... and thus be calculated as Frequency.
So if you increase that Frequency, you increase the flow of Ones and Zero's...

Now every CPU has electric connections and internal Transistors or switches... that allow, and direct those Ones and zero's, to where ever that CPU is told to send them.

Now... Ones and Zero's are really electrons... and thus current flow pushed by Voltage... if there is resistance to electron flow then you must increase the Voltage.

But... any resistance to current flow has the effect to produce Heat...

The Cpu's, and the transistors in them, are made of Silicon wafers and other elements, that create the internal electrical network and paths for current flow...

But... the purity of the materials used... and exacting process in which they are made... as with anything else... can vary from unit to unit... and electrical resistance in those internal networks can vary... So in other words some require more voltage than others and will produce more heat... to do the same work.

So... basically All CPU's of a certain Model, can be electrically the same design... But due to the Quality and Manufacturing Process... must be run at a different multipler of the CLock Speed ( frequency ), so as not to produce so much heat as to destroy it's self.

Thus... if you can dissipate the Heat produced, in the CPU, more effectively, you can increase the Muliplier or the Frequency of that unit, getting faster Ones and Zero's to be processed... Such as Bigger heatsinks and/or water cooling.

Think of the CPU Multiplier as a coarse adjustment and the Frequency as a Fine adjustment to the CPU processing Speed... and the Voltage must be high enough to keep all those Ones and Zero's ( electrons ) moving at those speeds, without an interruption.
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October 27, 2011 5:04:08 PM

thanks for the great answers!
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October 27, 2011 5:04:40 PM

Best answer selected by erenas4.
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a c 224 K Overclocking
October 28, 2011 3:58:41 PM

This topic has been closed by 4ryan6
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