Dual Core

What Does Dual Core Mean?

Dual core is a CPU that has two distinct processors that work simultaneously in the same integrated circuit. This type of processor can function as efficiently as a single processor but can perform operations up to twice as quickly. Because each core has its own cache, the operating system is able to handle most tasks in parallel.


Techopedia Explains Dual Core

IBM introduced dual-core chips in its Power 4 microprocessors in 2000. Dual core CPUs were introduced in 2004. Because of the continual increase in single core clock speeds, CPUs were generating more heat and using more power. Dual cores were introduced to improve performance without generating more heat as dual core systems use about the same amount of energy. Processors with triple and quad cores have since been introduced.

While a dual-core system has twice the processing power of a machine with a single processor, this doesn’t mean it will always perform twice as fast. This is because some operating systems and programs are not optimized for multiprocessing.


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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…