big.LITTLE


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big.LITTLE

An ARM-based multicore CPU that uses one or more pairs of high-power and low-power "virtual cores" for greater battery life. Depending on the processing demand, either the big or little core is used. The big.LITTLE architecture was introduced in 2011 along with the first low-power Cortex A7 CPU that was designed to be paired with the high-power A15. The ARM 53-57 pair was announced subsequently.

Why Not BIG.little?
While the obvious upper/lower case designation for this would be BIG.little, somebody thought big.LITTLE would be more ingenious. Go figure. See ARM and Exynos 5 Octa.
References in periodicals archive ?
The 11.6-inch model of new Samsung Chromebook 2 is powered by Exynos 5 Octa based on four big cores (ARM Cortex-A15 processors at 1.9GHz) and four little cores (ARM Cortex-A7 processors at 1.3GHz) and the 13.3-inch model is also powered by Exynos 5 Octa, configured with big.LITTLE technology (ARM Cortex-A15 processors at 2.0GHz and ARM Cortex-A7 processors at 1.3GHz).
By developing big.LITTLE processing and the Cortex-A7 processor, ARM has addressed the challenge for technology that can deliver both high-performance, required for content creation and consumption, while also delivering extreme power efficiency for extended battery life.
The big.LITTLE is a configuration in which at any given time, either the A15 cores are functioning or the A7s.
One approach is the Big.LITTLE concept, of course, which East said "provides roughly two times the performance with half the power consumption."
The SoC will be using ARM's big.LITTLE concept, meaning that it'll be built with a 28 nanometer manufacturing process, making the 1.8GHz cluster tuned for sheer performance, while the 1.2GHz cluster will be optimized for battery life.