It has Snapdragon 410 msm8916 1.2 Ghz cortex A53 64 bit processor. Newer architecture, with serious power and great power efficiency (much lower battery consumption).
Android Lollipop for G530H is released now in Russia and you can install it manually. Lollipop makes it even better and faster!
This phone is a lot better than S3, what do you say?