The purpose of overclocking
The overclocking is done to increase the clock speed of your processor (CPU) which increases the overall speed of your computer. 
We must be careful because it represents a danger to your computer components that may not withstand the blast and burn.
There are two ways to change the speed; by changing the multiplier or directly to the system bus.
For information on the processor, you can use CPU-Z .
It does not change the frequency but can give you accurate information about your components.
Changing the multiplier for overclocking
To calculate the speed of a processor system bus is multiplied by a multiplier, it is this that must change.
For example: a processor with 500 MHz system bus and a multiplier of 5 will work at the speed of 2500 Mhz (500 * 5 = 2500). If we change the multiplier a notch above, well the speed is increased to 500 Mhz because 500 * 6 = 3000.
This method no longer works on older processors because their coefficients were blocked lately. If you do not know if you can change yours, go into your BIOS and see for yourself if it can be increased.
Change the system bus frequency for overclocking
This method works by overclocking the system bus. It can be costly to your computer if it is poorly done because it can damage parts by making them work at an excessive speed.
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For a processor that runs at 2400 MHz (400 MHz system bus, multiplier of 6), if we change the system bus speed by passing 400 to 500 this will result in an increase of 6 * 100 or 600 Mhz and so on.
Cool the processor if you are overclocking a processor
For these two methods are successful, we must cool the processor. Why there are several ways through the cooling water to the experts and a good Cooler (heatsink + fan) for beginners.
If ever after overclocking your computer does not boot, try removing the CMOS battery for about 2 minutes which will give your BIOS default or made clear CMOS by moving a jumper specified in the manual for your motherboard.
Overclocking should be done on your processor if you have a great need and preferably by an expert because again if it is done badly it can destroy the very important components of your PC.
To summarize
- To improve the speed of the processor overclocking can either act on the system bus or on the multiplier.
- We must think for more cool the CPU speed is greater the more it will tend to heat up.
- You may have to throw his PC after mishandling, so be careful.
