That disco-box-flickering in the video is crazy!
Except for my very first desktop many, many years ago I have always assembled my PCs from scratch (there may be a post here somewhere about the last one) and got pretty much top-of-the-line hardware at the time to make it last a while. And I guess I got pretty lucky since I didn't have any real GPU issues. Thing is, at the moment I don't really use my desktop anymore - LOL