Dell laptop Service Jaipur igoods Laptop Repair & Jaipur Customer Care 964-998-9999 CPU processor. The central processing unit (CPU) is the brains of your computer. This is where all of the calculations and processes are carried out. A laptop’s CPU can be very difficult to upgrade, so it’s important to choose the right one when you’re buying a new laptop. The two main types of CPUs are Intel and AMD.