Alternative perspective: build a solid mid-range PC and keep it updated. Over those same 8 years, you’ll spend like half and have a PC that keeps up w/ the latest games, just upgrade when it’s getting poor performance.

I’ve been slowly upgrading my PC since 2010 and have spent about $3k, though I didn’t do any gaming the first 5 years. I just upgrade one or two components as they become bottlenecks, and today I’m running a 6650XT w/ Ryzen 5600 CPU, and performance is pretty good for everything I care about (roughly PS5/XBox Series X perf I think).