The speed and power of a processor (aka the 'brain' of your computer) determines how well and how fast your computer can do things like create spreadsheets, play games, browse the internet, run software, and more. The more cores a processor has, the better it will be at doing multiple things at once.

The operating system (or OS) manages the computer's programs, files, and devices or its hardware and software. Windows, Android, and Chrome are common operating systems in Lenovo products. The higher the version number, the more recently it was released.