Yes, you read that right. Meditek has a 10-core processor called the Helio X20.
The Helio X20 is composed of four (4) ARM Cortex A53 running at 1.4GHz (for power efficiency), another set of four ARM Cortex A53 running at 2.0GHz (for balance of power and performance) and two (2) ARM Cortex A72 (for extreme performance).

The processor is paired with a Mali T800 GPU.
We should be seeing a few smartphones sporting the 10-core chip around June, or thereabouts.
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Does each core even have an efficient instruction set? Madalas pag naglilihim sila ng detalye ibig sabihin nun pangit ang spec, parang phone specs lang ng mga Cherry mobile leaflets .