RAM is random access memory the main memory of our device which execute each and every process perform. More our device ram more the speed of run time means Ram is only memory which took load of all the processes occur just like we run any application, music file, game all these things are run in temporary memory. RAM if you run number things at same time then you may face not responding problem just because RAM , Paging and cache memory is lesser that your current apps requirements. But not any easy part to upgrade your ram its also costly.
You don't worry here is a concept if Virtual memory means You can increase your RAM just by using any device as virtual Ram. This virtual not have same performance as compare to your actual device ram but this concept increase Paging memory and some other functioning which means your overall performance become good and Some application also easily smart running without any not responding issue.
Click here to Know how : Click Here