[SOLVED] What does it do?

Solution
This is a bit of a loaded question. Chips have a "clock speed" which they run at. In each clock, a chip performs an instruction. Overclocking pushes this clock speed even higher than usual. This allows it to perform more instructions per second, meaning more performance. However, pushing it too high can cause instability and crashes. Increasing voltage increases stability. However it also increases temperature, since the power draw of the chip is higher (power = current * voltage). Higher temperatures can also cause instability. Too high voltages or temperatures (rather, fluctuations in temperature) can degrade a chip.
This is a bit of a loaded question. Chips have a "clock speed" which they run at. In each clock, a chip performs an instruction. Overclocking pushes this clock speed even higher than usual. This allows it to perform more instructions per second, meaning more performance. However, pushing it too high can cause instability and crashes. Increasing voltage increases stability. However it also increases temperature, since the power draw of the chip is higher (power = current * voltage). Higher temperatures can also cause instability. Too high voltages or temperatures (rather, fluctuations in temperature) can degrade a chip.
 
Solution