Over-clocking a computer's processor or memory causes it to go faster than its factory rated speed. A processor rated at 2.4GHz might be over-clocked to 2.5GHz
Risk of Over-Clocking
Over-clocking comes with many risks, such as overheating, so you should become familiar with all the pros and cons before you attempt it. Additionally, over-clocking isn't supported by the major chip manufacturers which means over-clocking your CPU will void your warranty. Over-clocking can also decrease the lifespan of the CPU, cause failure in critical components and may even result in some data corruption. You may also notice an increase in unexplainable crashes and freezes.
Pro and Cons of Over-locking
Pro:
Faster Computer
Cons: Over-Heating, Noise, Power
Helpful Tips on Over-locking
1. Never use a stock CPU Cooler
2. Make sure your Computer got good airflow
3. Buy a After market CPU Cooler when over-Clocking