30 centimetres, by 30 centimetres, by 10 centimetres. That's how big this 4K-friendly, Intel Core i7-toting, dual SSD-booting, Nvidia GeForce GTX 1080 SLI-ing gaming rig is. The only problem? The case itself cost more than the $US3500 of high-end PC components inside. Built for an Australian hardcore PC enthusiast and engineer, it's a prototype for what could well be the smallest 4K gaming PC that money can buy.