Video card degradation during mining and other dangers

Question

Video cards

Greetings. I turn to those who know: I heard something somewhere, but I would like to understand the issue exactly, once and for all.
Actually, subject, is the degradation of the chip during mining real? I read explanations that diffusion can occur from high temperature and sooner or later pn junctions will cease to exist with all the consequences. If this phenomenon exists, then what temperature can be considered safe, at what degradation will begin? Are there any other pitfalls?
I have a Radeon HD 7850, the average temperature is under max. mining load 65-75 degrees. It is interesting to join mining for a while, but the card is more expensive.

Answer 1

degradation occurs at any temperature. we can recall the rule from chemistry, which says: when the temperature rises by 10 degrees, the rate of a chemical reaction increases by 2-4 times. so the question is not "whether there is degradation", but how strong it is.

Answer 2

Chip degradation occurs under constant unstable operating conditions: overclocking, constant operation under heavy load. Of course, when mining, the card will fail faster, but this will not happen instantly.

Answer 3

Mainil himself and friends, never saw any degradation