If the processor of your laptop has a lot of cores, it can be easily used for multitasking. The cores of your processor essentially act as virtual processors on your laptop. This means that a 4 core processor acts quite similar to having 4 processors in your laptop. As a result, if you are a heavy user, it is recommended to get a laptop with 4 cores. A 4 core CPU allows you to easily multitask on your laptop. On the other hand, a 2 core processor is more than enough for all of your everyday tasks on your laptop.