The fastest processor can be analyzed based on its inner cores, for example in the case of a single core processor, it appears that Motorola RAZR i includes the fastest processor, an Intel version, Z240 Atom
On the other hand, in the case of duo core processors, Samsung Galaxy series are remarkable, based on versions of Snapdragon processors
In the case of quad-core, I appreciated HTC One X+, that I used for several months. Its extremely fast, either you play a video or simply browse on the internet
