Multi-core is one of the most important enhancements to increase the speed of processor in mobile devices to get a boost in performance. Multi-core processors are the new dimension manufacturers are focusing these days. A multi-core processor has many advantages especially for those looking to boost their multitasking computing power of smartphones.
Each core has its own cache, so the only one operating system which has sufficient resources and provides a noticeable improvement to multitasking can handle intensive tasks in parallel directions.
Multi-core processor is a single computing component with two or more independent actual central processing units, which can read and execute program instructions. The instructions are basic CPU instructions such as add, move data, and branch, so multiple cores can execute multiple instructions at the same time, increasing overall speed for programs by parallel computing.
Manufacturers normally integrate the cores onto a single integrated circuit die, or onto multiple dies in a single chip package.
A dual-core processor has two cores, a quad-core processor contains four cores, a hexa-core processor contains six cores, an octo-core processor or octa-core processor contains eight cores and deca-core processor contains ten cores.
Improvement in performance gained by the use of a multi-core processor depends heavily on the software algorithms or mobile apps and their implementation.
Possible gains are limited by the fraction of the software that can be run in parallel simultaneously on multiple cores.
Most android applications are not accelerated much unless programmers invest a dedicated effort in designing the solution.
Multithreading or other parallel processing techniques provides most performance out of the multi-core processor. It allows to user to switch betwewn multiple apps without getting device hanged.
Intel and AMD are the major manufacturers of microprocessors. Multi-core chips also allow higher performance at lower energy and it is a basic factor in mobile devices that operate on batteries.
Since each core in multi-core is mainly more energy-efficient, the chip becomes more efficient than having a single large monolithic core. Multiple cores on a single chip give rise to few problems and challenges. Power and temperature management are two concerns that can increase exponentially with the addition of multiple cores in smartphones.