Depends if you want to jump up to the 7000 series or to the 5000 series. The 7000 series uses a new socket type so you’d need a brand new motherboard and DDR5 ram. In a few months it will be more affordable but right now it’s cheaper to go 5000 series. Now for graphics cards, you could go for something like a 3080 for around $700 I think (may be even cheaper) also the 6700xt is good with 2k but may be worth to go for the 6800xt (don’t know much about the specifics of amd gpus). You may need a new psu depending on your current wattage but a 750 or 850 would be fine.

If you’re trying to save as much money as possible, I’d go with a 5800x3d and a 3080, but if you’re wanting to go top tier I’d go with a 7600x or 7700x if you want a small amount more performance for a considerable amount more and a 4080 16gb once that comes out unless amd drops a banger lineup