Ah the r9 390, still a nice mid range card to this day, same with the 4790k.
There is something nostalgic about older PC builds, probably because back in these days you either chose looks function or price with a lot of people choosing the ladder two because looks were a lot more expensive to prioritize back then.
and the luxury of changing colors on command (rgb) was merely a concept back then so you really had to stick to a theme
this computer can stil play all games on the market just fine. even red dead 2 will run on this if you watch your settings