I built my current PC in 2017.
It's a:
7600k i5
32g RAM
960 Evo 1tb SSD
Nvidia GTX 1070
Z270X motherboard
I feel like I got a very good chip. I'm not at all expert on overclocking, but I've been running this chip at 5ghz since I bought it. No special effort, when I set the system up I set voltage at 1.235 and chip at 5ghz.
I was messing with my set-up yesterday, repositioning my AIO liquid cpu cooler and I snapped one of the fittings. So I bought one of the cheapest air coolers I found in 30s of trying, a $36 cooler master hyper 212 black (could have saved $2 for non-black). My temps are MUCH lower (from mid 40s at idle to mid 30s, only getting to mid 80s during benchmarking) and at the same voltage I bumped my clock speed to 5.1ghz and I'm still running cooler than I ever did with my AIO water cooler.