Obviously such a practice may invalidate your warranty and you should seek clarification before you start. Not every PC component will overclock and your success rate of over clocking depends on many variables and is not guaranteed. This page will deal with the two most common, the cpu and the graphics card. As processor speeds increase, the byproduct of that speed is heat. Heat buildup begins at the core of the CPU, and spreads throughout the entire silicon package until the vulnerable core trace routes are overwhelmed and compromised.
Heat dissipation is the number one priority in order to successfully overclock any processor.
Once heat related issues are taken care of, operating an overclocked CPU on a daily basis becomes safe and relatively maintenance free. Make sure you get one of the models that supports dual fans or more as these are much more effective in dissipating heat than a single fan unit. Depending upon the Intel 440BX main board you own, you may have three different options when changing the settings to create an overclocked environment. First, you may have a main board that utilizes a BIOS utility to totally configure the setting for bus speeds and multiplier options. This is the most desired option, as it makes experimentation and changes extremely easy to accomplish.