A free i7 5820K?! I'd use this processor as the centre of my first computer build in ten years. After being a poor teenager and student I've finally got a job and Linus Tech Tips has inspired me to get back into PC use after years of a bottlenecked i3 laptop. I'd pair this processor with an EVGA GeForce GTX 980 and a decent amount of fast DDR4 RAM so I can 3D model, write code and run fluid dynamics simulations for my own projects as well as finally running Kerbal Space Program at a decent frame rate. I'd package it all in that Enthoo Pro mid tower you guys reviewed as well, that thing looks ace.
Cheers guys, keep up the good work!