Nobody ever replied?
Well, what model is your i5?
Like my i7 is a 3770k its the bit at the end i would need to know.
If it has a k at the end, it is much easier to overclock and less likely to case damage than if it doesn't have a k at the end.
Also, i would make sure you have a good fan, you wouldnt want to overclock to anything extreme if you're using a standard fan.