I've been watching a lot of YouTube videos on computer building, and I've seen that one among others. You know you can use two of those in crossfire/SLI mode (with games that support that sort of thing). In fact if you're careful you can build a truly righteous PC for as little as $26,000.
https://www.cdw.com/product/HP-Z840-...g!341014954975!
Of course they do make much cheaper models ($4,000 range), but this one comes with Linux pre-installed!