Increasing the frequency of the CPU will burn more power as the dynamic power of a cpu is directly related to the frequency with which it is run.
The dynamic power of a circuit is P=ACV^2F. So the power is a function of the A=activity factor (how much of the cpu is switching), C=capacitive load, V=voltage squared, this is why voltage matters so much, and F=frequency at which it is running. So the power consumption will increase linearly with the increase in frequency. A 20% overclocking will consume 20% more power.
For more details google "dynamic power equation"
Quote:
Originally Posted by nayr1482
Everyone keeps talking about saving battery - I dont think underclocking and/or overclocking in this case really affect the battery life. We are not changing voltage applied to the CPU (yet  ) so should not make much of a difference... |