For better performance you need to select the fast processor & good amount of RAM that leads to faster Apps open time, higher frame rates in games, quick photo editing, and smoother web-browsing. Buying a phone with the newest processor means you’ll recover performance year-on-year than the previous generation while consuming even less power.
Important factors comes into picture while selecting mobile processors:
Number of cores: Few faster cores are better than more slower cores, more cores do mean better multitasking. The cores are often divided into performance clusters and power-saving clusters, with the high performing cores kicking in once when you need it, and the power-saving cores handling the regular tasks.
Clock speed: Higher clock speed means more operation can be done in short time period.
Faster & premium processors are going to overflow from 2GHz.
Core type: Not all cores are same, a quick set of dual cores will outperform a slow set of quad cores. Brands, like Apple, Samsung, and Huawei, prefer to build their own inhouse mobile processors instead of using from processor manufacturers like Qualcomm Snapdragon & Mediatek. Apple has been a leading Mediatek in this space for a while now, while Samsung and Huawei are the simplest of the bunch for premium Android processors. Qualcomm’s high end Snapdragon 800 series a benchmark of premium performance.
Always remember smaller processor design leads to better power efficiency.
RAM:
RAM (Random Access Memory) also refers to phone memory. RAM is used to store the operating system (OS) & apps currently in use.
The more RAM size your phone has, the more number of operations it will be able to perform concurrently without facing any lag. 4GB RAM is good enough. However, as the modern smartphones comes with 6GB, 8GB upto 12GB of RAM