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-   -   how long before cpu damages from overheating (https://www.overclock.net/forum/5-intel-cpus/1726456-how-long-before-cpu-damages-overheating.html)

empl 05-25-2019 10:11 AM

how long before cpu damages from overheating
 
My cpu fan molex cable once disconnected and i left cpu running without fan like 1-2 minute. I have i7 3770k, which has max operating temperature 69 if i remember correctly. Just hypotetically, how long it takes for cpu to damage itself, after exceeding maximum temperature.
About Gpu i was pushing it even to the 95C, because i read 95 is maximum temperature for 780. Because thermal throttling, it won't allow higher frequency and i needed to overclock it. I even read some article i think it was on nvidia that it likes hot and 90-93 even increase perfomance. Now i read it should not exceed 85C. Even max can be up to 105C for some cards.

LesPaulLover 05-25-2019 10:35 AM

lespaullover
 
Quote:

Originally Posted by empl (Post 27978812)
My cpu fan molex cable once disconnected and i left cpu running without fan like 1-2 minute. I have i7 3770k, which has max operating temperature 69 if i remember correctly. Just hypotetically, how long it takes for cpu to damage itself, after exceeding maximum temperature.
About Gpu i was pushing it even to the 95C, because i read 95 is maximum temperature for 780. Because thermal throttling, it won't allow higher frequency and i needed to overclock it. I even read some article i think it was on nvidia that it likes hot and 90-93 even increase perfomance. Now i read it should not exceed 85C. Even max can be up to 105C for some cards.

Generally speaking, your components will:
1) Under-clock and/or under-volt themselves when they detect an over-temperature operation.
2) Shut the system down entirely if the reduction in clocks/voltages haven't resulted in sustainable safe temperatures

Your CPU, more-than-likely, is completely fine. The throttling temp for the 3770k looks to be around 100c (69c is a VERY safe operating temperature). If your CPU reached that temperature it would have then automatically downclocked itself. If temps went even higher still, the CPU would have ordered your PC to shutdown entirely.

Unfortunately I cannot be entirely sure about your GTX780. As you stated, 95c is indeed the maximum safe operating temperature for that GPU and (also as you said) when it reaches that temperature it thermally throttles - this is INTEDED and by manually overclocking and bypassing that thermal throttling you MAY have damaged the card.

Are you experiencing any artifacting in games? Crashing of games? Monitor randomly going black for short periods of time? If not your GPU is PROBABLY fine, but bro, you need to do something about your cases airflow. A GTX780 should not be running @ 95c sustained for any long periods of time if your case has sufficient airflow!

Hopefully this was helpful!

Etyl 05-25-2019 10:41 AM

It's 67C for tCase, tJunction is obviously higher.

CPU degrades with use due to, among other things, diffusion. The higher the temp the faster the degradation. Same with voltage.
Unless you disabled protections it will shut down/throttle down after reaching max allowed temp and straight shut down once it reaches temperature that could result in quick catastrophic failure.

I wouldn't run this CPU for daily use with more than 1.35V and max core (not case) temperature of 80C under stress test load (and less for regular use)

empl 05-25-2019 11:51 AM

Quote:

Originally Posted by LesPaulLover (Post 27978842)
Generally speaking, your components will:
1) Under-clock and/or under-volt themselves when they detect an over-temperature operation.
2) Shut the system down entirely if the reduction in clocks/voltages haven't resulted in sustainable safe temperatures

Your CPU, more-than-likely, is completely fine. The throttling temp for the 3770k looks to be around 100c (69c is a VERY safe operating temperature). If your CPU reached that temperature it would have then automatically downclocked itself. If temps went even higher still, the CPU would have ordered your PC to shutdown entirely.

Unfortunately I cannot be entirely sure about your GTX780. As you stated, 95c is indeed the maximum safe operating temperature for that GPU and (also as you said) when it reaches that temperature it thermally throttles - this is INTEDED and by manually overclocking and bypassing that thermal throttling you MAY have damaged the card.

Are you experiencing any artifacting in games? Crashing of games? Monitor randomly going black for short periods of time? If not your GPU is PROBABLY fine, but bro, you need to do something about your cases airflow. A GTX780 should not be running @ 95c sustained for any long periods of time if your case has sufficient airflow!

Hopefully this was helpful!

No i didn't bypassed thermal throttling, i don't experience any problems like that. I don't know how long i was on 90-95 couple days maybe, because i had no idea for gpu is it is different than for cpu and i even read temps over 90 increases performance. Don't know which phrase i used, now i found 85C max for long term usage. And airflow is fine. It is probably fine than.

wingman99 05-25-2019 12:19 PM

So long as all the safety's are not disabled the components will be fine.


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