If any one if looking on how to overclock look no further. It has Core i3 i5 and i7 how to, and what is safe and what is not.

http://www.overclockers.com/3-step-guide-overclock-core-i3-i5-i7/

Some other tools you may need while overclocking

http://www.alcpu.com/CoreTemp/

This tool is good for monitoring you CPU temps, and it also has a G15 function so that you are able to watch temps while you are in game.

http://files.extremeoverclocking.com/file.php?f=205

Now while you have you Core temp running stress you overclock to see if it is stable or not, there should be no errors while you are doing this MIN run time an hour.

http://downloads.guru3d.com/IntelBurnTest-v2.3-download-2047.html

Once you have found the sweet spot with you overclock, run burn test to see if it meets Intels standard

Note might only work on INTEL CPUS have not tried it my self.

If any one has something constructive to add, Plz do it will be greatly appreciated.