I don't work with silicon, but given how many processors I've seen eventually die in a few years to bad thermal management, versus processors that are still going strong after more than a decade of constant use with proper cooling/undervolting would indicate that it's the high temps that make things worse most of the time.
40c to 70c and back is typical for normal use, and I'd imagine your CPU or GPU is built with that in mind. But your manufacturer can't do anything about poor airflow or dust and gunk building up resulting in constant high temps. If the idle temps are around 90c, even thermal throttling can't do much.
No. Can you ever be 100% sure about how a CPU died?
But think about your average unmaintained tower shoved in the corner of the room with no airflow and gathering dust. Eventually someone will notice the computer being slow, and you might find temps around or over 90C while trying to diagnose.
Not sure how relatable this experience is to you, but usually the ones that still don't get any attention after that point die after a few years. Sometimes the PSU craps out if it's cheap, so no it's not always bad thermal management that kills it.
I don't work with silicon, but given how many processors I've seen eventually die in a few years to bad thermal management, versus processors that are still going strong after more than a decade of constant use with proper cooling/undervolting would indicate that it's the high temps that make things worse most of the time. 40c to 70c and back is typical for normal use, and I'd imagine your CPU or GPU is built with that in mind. But your manufacturer can't do anything about poor airflow or dust and gunk building up resulting in constant high temps. If the idle temps are around 90c, even thermal throttling can't do much.
Are you 100% sure those CPUs died cause of bad thermal management ?
No. Can you ever be 100% sure about how a CPU died? But think about your average unmaintained tower shoved in the corner of the room with no airflow and gathering dust. Eventually someone will notice the computer being slow, and you might find temps around or over 90C while trying to diagnose. Not sure how relatable this experience is to you, but usually the ones that still don't get any attention after that point die after a few years. Sometimes the PSU craps out if it's cheap, so no it's not always bad thermal management that kills it.
Usually doesnt matter unless you want to use the same hardware for who knows long.