I've not upgraded since 2016 I believe - I still run a pre-overclocked Gigabyte windforce 980Ti with an i7 6700k - 16gb of ddr4 and a Samsung nvme m.2.
While my current monitor is a 27" 144hz 1080p Iiyama; I would like to make a little return to gaming after around a years hiatus, maybe with a 1440p monitor and possibly one of these new 30 series RTX cards everyone is talking about - apparently the performance with the current Battlefield games at 1440p with the 3080 is pretty damn good.. even quite playable at 4k.
Because I skipped two core generations of GPUs (the 1080/ti and then the RTX 20 series), I imagine the jump in performance between the 980Ti and 3080 would be significant. Would love to go back and play BF4 at 1440p maxed out with a constant fps at a minimum of 144, tearing free - though maybe that's still wishful thinking?. Even so, with Gsync and Freesync I don't think the constant fps above the 144hz mark is actually necessary.
Funnily enough my brother is helping my 11 year old nephew build his first PC, I offered to donate some pieces I have lying around, in the form of my old GTX590 which was a beast of a card when it came out; it was 2 GPU chips on one card, effectively making it an onboard SLI solution for two GTX580s. But After doing a bit of research it turns out, this top of the line card which I bought for 6 or 7 hundred quid back in 2010/2011 wont be able to compete with a mid/bottom of the line 1660 contemporary card in the game 'fortnight' which is what he wants it for. Also, apparently SLI has gone the way of the dodo, so If you did want to run this card on a modern game, it would not be as a 590 but a single 580 GPU. To top it off, Nvidia stopped supporting it in 2018 for driver updates so it may only be a matter of time until the card doesn't even switch on in a modern windows 10 machine - feels kinda sad really.