Many gamers, engineers and designers prefer custom computers, as they can ensure that they will have a computer that can handle their activity. Video games are known for how much power and strength they need from the computer, if you want them to look and play nicely. As for engineers and designers, they use programs that need a lot of power too. That’s why, for these people, the GPU is the most important component in the whole computer. GPU stands for Graphics Processing Unit. It handles tasks like video editing, rendering and 3D modeling.