Since Android OS was released, it has undergone innumerable changes. Right from it’s earlier versions to the latest Jelly Bean OS, many differences are seen, not only from the OS point of view but even with respect to processors, GPU, etc. Initially only single core processors were used and now even smartphones with 8 cores are manufactured. With the increase in the cores, a better speed is obtained but along with it the battery consumption also increases.
Android, being an open source OS, allows many modifications which can help to reduce the power consumption by the processor. There are several apps which will help in saving the battery life and one such app is Quad Core Manager.