Update Oct 7th:
Ive upgraded a few more parts and replaced both of my RX 580 since I got around 120€ for each of them. So it's basically a good discount for a brand new RX 5700 xt. PSU and cables hav ealso been replaced to make sure I can properly power all components + cablemod cables pure for esthethics ofcourse.
I am constantly upgrading my desktpop PC over and over. Starting with a new graphics card, to some visual and cooling upgrades up to generall mainboard, CPU and memory upgrade.
One or two years ago, I upgraded my old HD4850 graphics card due to compatibility / driver issues. Win10 wasn't able to properly display anything as soon as I upgraded my drivers so I just bought an RX 580 since it just came it, was super cheap and boosted my PC's performance by a lot.
A year later, my PC became slower again and I thought It'd be a good idea to just get a 2nd RX 580. It was much cheaper than buying a new 1080 or similar and boosted my performance by almost the same factor. In the end I payed basically half of a new 1080 and was able to play games on 1440p high details.
In the past months I realized my setup became slow again and the bottleneck was my CPU + memory. I was still runing on an i5 with 8 GB memory. I managed to overclock it to like 4.5 GHz, but loading times for several games were bad. So were FPS in general.
Thanks to the Ryzen 3000 release, I just thought an upgrade would be a great idea and it was. My setup it not on the high end level but I'm quite happy right now.