i would like to play at 4k - My case is hyte y70 PSU is 700w
then to get anything meaningful from a 3080ti you're fairly limited to a 4080super or 4090 i reckon...4090 being the real 4k master..or a 7900xtx, but at these price levels I'd want the extra raytracing and dlss. The 5000 series gpu's s/b coming out in q4 of this year by what I'm reading too, so I'd hold out for those if splashing big cash
At 4k, most games are gpu limited so really to be the gpu that's going to give you the big boost...
as a guide, I'd go with sa 7800x3d/6000c30 ram kit..the tuf mobo is good enough..next step up for me would be something like the Asus strix B650e-f gaming which give better vrm's, and alsompcie5 on the gpu as well. not necessary now, and who know's in future, prob not that relevant for 5000 series gpu's but you never konw and if am5 still supported might be relevant by time high end 6000 series comes out..can't see future but there you go. Up from that would be the B650e-e gaming board which gives you 5 nmve slots, slightly diff vrms again and a digital error code display