I use a snapdragon 820 with 4 GB RAM and 32 GB internal, with 128 GB for my media needs. A 2K screen, with a pretty quick fingerprint sensor and a 12MP/5MP combo camera.
This device is used for web browsing, casual gaming, some blogging, youtube, music. Most people I know use their phones for less if not the same. Everything is smooth but I always wonder, what amount of processor juice would I need to get these tasks done. I am sure that a SD820 is capable of doing much more complex and demanding tasks than these. A SD430 series too is able to do these things.
One area where I felt this power is needed is the operating system itself. Yes, I use split screen on my recently “Nougat’d” phone and running youtube and Whatsapp in parallel takes up some processor power. What if I didnt have the split screen functionality? What if I had to IM when I am IMing and YouTube when I am YouTubeing?