Unlike gaming consoles, or smart TVs, we buy our personal computers to do a variety of things rather than a small set of related jobs. Perhaps most importantly, we expect our PCs to do many of these things at the same time! If you need a computer that can handle lots of applications and tasks at the same time, there are some key things you need to consider when it comes to buying the right CPU.
Source : What Makes a Processor Great for Running Multiple Applications?