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The trend in processor development has been towards an ever-increasing number of cores, as processors with hundreds or even thousands of cores become theoretically possible.<ref>{{cite web|last1=Clark|first1=Jack|title=Intel: Why a 1,000-core chip is feasible|url=https://www.zdnet.com/article/intel-why-a-1000-core-chip-is-feasible/|website=ZDNet|access-date=6 August 2015|url-status=live|archive-url=https://web.archive.org/web/20150806181915/http://www.zdnet.com/article/intel-why-a-1000-core-chip-is-feasible/|archive-date=6 August 2015}}</ref> In addition, multi-core chips mixed with [[simultaneous multithreading]], memory-on-chip, and special-purpose [[heterogeneous computing|"heterogeneous"]] (or asymmetric) cores promise further performance and efficiency gains, especially in processing multimedia, recognition and networking applications. For example, a [[ARM big.LITTLE|big.LITTLE]] core includes a high-performance core (called 'big') and a low-power core (called 'LITTLE'). There is also a trend towards improving energy-efficiency by focusing on performance-per-watt with advanced fine-grain or ultra fine-grain [[power management]] and dynamic [[dynamic voltage scaling|voltage]] and [[dynamic frequency scaling|frequency scaling]] (i.e. [[laptop]] computers and [[portable media player]]s).
Chips designed from the outset for a large number of cores (rather than having evolved from single core designs) are sometimes referred to as [[Manycore processor|manycore]] designs, emphasising qualitative differences.
===Architecture===
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