The X30 will also offer a 10-core processor, but it will come with a new 4-cluster architecture. One of those features 4 powerful Cortex-A72 cores - two more than what the X20 offers. The complete breakdown goes like this: 2x Cortex-A53 at 1.0GHz, 2x Cortex-A53 at 1.5GHz, 2x Cortex-A53 at 2.0GHz and 4x Cortex-A72 at 2.5GHz
http://www.gizchina.com/2015/08/01/mediatek-helio-x30-specs-revealed-another-snapdragon-killer/
http://www.gizchina.com/2015/08/01/mediatek-helio-x30-specs-revealed-another-snapdragon-killer/