The thing is I've never worn out a piece of equipment in 25 years of computer enthusiasm. I've had some DOAs and infamous equipment (say Deathstar) but never failures even second hand equipment. Is that different for 24/7 max power draw or is it just YMMV (and usually will still work)?
Eh, I mined on some GPUs for ~a year. They're all still running today in various family members' PCs. Admittedly I was mining Ethereum where the main goal was to undervolt and underclock as much as possible while maximizing the memory clock.