blkspade and davidrbarnette, thank you for your assistance. Your clarification regarding RT and DLSS and what I should be looking for helped me fill in the gaps...
Given that I'm not interested in VR gaming at the moment and will be primarily utilizing a single 1440P monitor, I'm hopeful that my new rig will offer a degree of future-proofing beyond my current setup. Sure, I'd like to get me 4090, but the price in my country, hovering around 2400-2500 EUR, is a significant deterrent. However, I can procure an RX 7900 XTX or RTX 4080 Super for half that price (1100-1200 EUR). The prospect of spending significantly more for potentially marginal performance gains doesn't sit comfortably with me.
On another note, I'm curious about something. I've come across information suggesting that DCS tends to favor Nvidia over AMD GPUs. Could you confirm if this is indeed the case and provide insight into why? I've noticed that among my preferred streamers on YouTube, Nvidia GPUs are only GPUs in their setups, with no AMD card in sight. This puzzles me, especially since the 7900 XTX offers excellent value for money (IMHO). I've even encountered benchmark tests where the 7900 XTX outperforms all the highest-end 40XX GPUs (excluding the 4090, of course), but those tests didn't include DCS...