The Sony Xperia X is powered by a Snapdragon 650 - Qualcomm's new and highly popular mid-range chipset. To be honest, we tend to prefer its 652 sibling. Don't be fooled by their name, these are the true successors to the Snapdragon 810. They use the Cortex-A72 CPU core, faster and more powerful than the A57 it replaces. The Snapdragon 650 has two of them, the 652 has four, both add four Cortex-A53 cores for low-power needs. Better still, the GPU is part of the Adreno 5 series, a 510 to be exact. It's miles ahead of the Adreno 405 that's used in lower-end Snapdragon 6-series chipsets. It...
Source: http://www.gsmarena.com/benchmarking_the_sony_xperia_x_starring_snapdragon_650-news-18219.php