Intel's new SoC's reduce what you need for a basic end-user computer to a motherboard the size of a stick of gum. And that's not an exaggeration.
Oh yes it most certainly IS an exaggeration, it's 10cm by 4cm, much larger than a gum stick at 8.5cm by 2cm. Plus the Intel needs a fairly large power brick. Now some of the Android sticks are as small as a pack of gum and are low enough power that they can run off the USB port built into some TV's (if they're made for charging a phone it will work, if they're only for running a flash drive then it won't) so they really are tiny.