Cores are essentially the main brain of your computer, They are part of the Central Processing Unit or Cpu for short, They do a little bit of everything from converting the keys you use on your keyboard, to usable signals both you and the rest of your computer can interpret ether through the lcd screen into a notepad or in a game where you need to click stuff .
The more you have the more you can do in basic terms.. Many photo or video editing apps make use of multicore processors by using one or more core to draw lines while others make colors. That’s a very basic explanation of it but you get the idea of what a cpu core is and why you want more from it i hope.
