Question

Difference between quad core and octa core in mobile

Answer 1

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Answer 2

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octa-core and quad-core denote the number of processor cores in a CPU. 
Octa is eight, quad is four.
the key difference between the two – at least when talking about mobile chips in 2015 – is how these processor cores are set up.

Modern octa-core chips, meanwhile, simply have two sets of quad-core processors, which split various tasks between them according to type. Most of the time, the lower-powered set of cores will be employed. When advanced tasks are needed, however, the faster set of four cores will kick in.

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