Powering high end flagship phones like Galaxy s4, LG G Pro etc in the year 2013, Snapdragon 600 was the fastest at that period. However, 2015 till date, Snapdragon 615 have become so popular albeit in mostly midrange phones like Galaxy A7 (2016), Galaxy A5 (2016) but then I've been a bit confused as to which of these chipsets provides the fastest and most reliable processing experience.
All those guys here that normally shout I'm techy, I'm geeky, I'm tech sarvy etc, now is the time for you to come and prove how techy, geeky or whatever you call yourself you are. Pls I want detailed explanation if you can provide it.