And in fact this card is like even more than 7 years old. It's the same GPU as the 290/290x, only a bit pushed, renamed and with more VRAM (8GB instead of 4GB but there is some 290X which already used 8GB). This GPU is completely on par with RX 580, plus has plenty of compute power for FP64.The 390x still holds up rather well in modern titles:
https://www.guru3d.com/articles_pages/radeon_rx_5500_xt_review,13.html
Not bad for a card that is basically 6 years old.
I have to chuckle at those that say the next gen consoles will get destroyed by PCs in a couple years. Hardware just doesn't advance that fast anymore.