https://www.techradar.com/news/computing/pc/10-of-the-best-desktop-pcs-of-2015-1304391

Desktop computers aren’t what they once were. Instead, they’re cheaper, faster and more compact than ever. They’ve also diversified beyond their boxy designs. Nowadays you can still purchase a PC tower detached from a keyboard, mouse and accompanying display. But you can also buy more a practical all-in-one computer featuring only one power cable, a built-in high-quality screen and a mouse and keyboard that were designed to complement the external framework rather than distract from it. 

We won’t see significant advancements in computing for quite some time. Despite being conceptualized in the early 80s, quantum computers are still not a viable reality beyond for those who can easily part with $10 million (about £7 million, AU$12 million). And although Intel has recently managed to produce a quantum processor that resembles the silicon of today, for now we’re going to have to stick with computers that adhere to classical physics.