The speed and the memory of your computer are only relevant to what you use it for. The computer I use for work is capable of rendering 3d models using a software called Pro E and sending models to customers and suppliers via the net, yet the computer I have at home is simply used for email and browsing the net. Obviously for simple tasks as the computer at home performs I don’t need a high performance computer. It’s all in what you need, if you buy what you want you may spend more than you would like to.