Mobile chips keep getting more powerful. Which begs the question: What makes a PC, a PC? Is it the chips inside, the OS it runs, or what you can do with it? If it's the latter, then the Remix Mini Android PC is as much a "personal computer" as any vanilla Windows box. Powered by a 1.2GHz quad-core 64-bit chipset, it runs a version of Android Lollipop called Remix OS that's been customized to provide a more desktop-like experience. That includes a Windows-like taskbar, multiple overlapping Windows for multitasking, and mouse and keyboard support. It has Wi-Fi, Bluetooth, an Ethernet port, dual USB ports, and an HDMI port, supports 4K output, has either 1 or 2GB of RAM and 8 or 16GB of internal storage, and yet uses only 10 watts of energy. Oh, and it starts at only $20.