..........they would look like this!
5 x R9 Fury pulling 2.2kh @ 1050watts on Zcash. GPUs 60c @ 40% fan. Lovely. Really easy to make too - all you need to do is nock a few of the vertical struts out with a small hammer (they're glued down) to make way for the cards and I screwed a 1/2" square wood rear brace across the back to hold the back of the cards up. Job done. $30.
Guys and gals please don't buy $150 metal mining cases - go to ikea and spend $30!!! Can fit 7 cards easily if u want & can make them stackable.