The smaller, the better. Computer nowadays don't need to be bulky. From heavy laptops, our mobile computers are smaller now than ever. We have netbooks, ultrabooks, and of course, Chromebooks. As for desktop computers, you don't need to get a CPU tower just to have a kick-ass system. You can either use your high-specced laptop, an all-in-one PC, or something as small as this: a Chromebit.