Still rocking my i7-950, air-cooled overclocked to almost 4 Ghz for the last 14 years without a single major hiccup. Bi-annual cleaning and a re-paste every 2-3 years has probably helped.
It finally showed its age though about 2 years ago when some new games required new instruction sets and couldn't launch at all. A new build is finally in the works.
My i7 2700k is still my Plex server/sometimes gaming rig (mostly game on the switch nowadays). With a 6650xt I was playing Spiderman at 1440p pretty well. I'll update it someday but I honestly don't really have a need to.
It finally showed its age though about 2 years ago when some new games required new instruction sets and couldn't launch at all. A new build is finally in the works.