Temps and longevity

[zenyxia]

Hello!

Is it true that as long as a CPU runs below its TJMax even by a celsius degrees, its longevity won't be affected?

What I'm trying to say is that, is there truly no difference between a CPU running at 70C and 99C in terms of longevity? (100C is TJMax for example)

I think both statements don't make sense to me, however I wonder your opinions on this matter as well.

Thanks!

[strange13930]

15 minutes ago, zenyxia said:

Hello!

Is it true that as long as a CPU runs below its TJMax even by a celsius degrees, its longevity won't be affected?

What I'm trying to say is that, is there truly no difference between a CPU running at 70C and 99C in terms of longevity? (100C is TJMax for example)

I think both statements don't make sense to me, however I wonder your opinions on this matter as well.

Thanks!

 think of it like running the TJMax is your max speed (10mph)and your distance is your longevity if your running 9.8 Mph your going to run out of stamina faster than if you where running at 8 Mph even though the difference between the two numbers isn't a lot the difference in the distance you can run can be a lot bigger. sorry if my explanation doesn't make sense.

[PDifolco]

35 minutes ago, zenyxia said:

Hello!

Is it true that as long as a CPU runs below its TJMax even by a celsius degrees, its longevity won't be affected?

What I'm trying to say is that, is there truly no difference between a CPU running at 70C and 99C in terms of longevity? (100C is TJMax for example)

I think both statements don't make sense to me, however I wonder your opinions on this matter as well.

Thanks!

No, higher temp means faster degradation (past a certain point at least, maybe 70C). But the chip should still last for years even running at TJMax

[Electronics Wizardy]

Generally most systems in my experience are replaced as there too slow or old, not due to failure. CPUs seen to be pretty reliable, even in systems not treated well, so I woudln't worry about life span at different temps. 

 

The chips should degrade faster with high temps, and its far from linear typically, but again this generallyd oesn't matter in the real world.

[Hinjima]

42 minutes ago, zenyxia said:

Hello!

Is it true that as long as a CPU runs below its TJMax even by a celsius degrees, its longevity won't be affected?

What I'm trying to say is that, is there truly no difference between a CPU running at 70C and 99C in terms of longevity? (100C is TJMax for example)

I think both statements don't make sense to me, however I wonder your opinions on this matter as well.

Thanks!

I have never had a CPU fail on me in over 25 years of building and messing with PC's.

I have always overclocked my CPU's and ran them at the limit of stability and temperatures.

Upping voltage beyond what is considered safe limits and been rocking rather high temperatures, but never high enough to thermal throttle or be considered dangerous.

 

as pointed out by@Electronics Wizardy You will swap out your CPU due to it being too old and slow for modern tasks before you will notice any signs failure.

 

We'll see with AM5 CPU's and see how they are affected in longevity as they tend to run quite warm, AMD even says that running them at TJmax ( 95c ) is safe for 24/7 workloads.

[YoungBlade]

When it comes to longevity, TJMax tells you the max temperature for the CPU that is considered "normal" operation. The CPU is allowed to run at that temperature all day and Intel or AMD says that's fine. If your CPU has a 5 year warranty, then Intel or AMD is saying that you can rush home, throw it in a system, and run Prime95 for 5 years with the CPU sitting at TJMax the entire time and, if it fails before the 5 year mark, they will still honor the warranty. If the TJMax is 100C, then the CPU is allowed to run at 100C 24/7 365, and that's considered "fine" by the company.

 

TJMax is not a magic temperature that suddenly causes degradation to happen.  In theory, the hotter the chip runs, the faster it will degrade. Running at 95C is worse than 85C is worse than 75C is worse than 65C etc. But in practice, it doesn't really matter. Most CPUs will last well past their useful lifespan regardless of how they are run.

[zenyxia]

Tysm all!!! My CPU is already more than ten years old. I'd like it to last a few more years. I've been using it with turbo boost off mostly until this year. Considering the replies, there seems to be a good chance for it not to die all of a sudden soon, even if it runs with turbo on from now on.

[Dedayog]

10 minutes ago, zenyxia said:

Tysm all!!! My CPU is already more than ten years old. I'd like it to last a few more years. I've been using it with turbo boost off mostly until this year. Considering the replies, there seems to be a good chance for it not to die all of a sudden soon, even if it runs with turbo on from now on.

Turbo boost it.

 

Won't hurt a thing, as others have said 

 

My 9900k oveclocked has been running that way since release, some 7 years now?

 

 

[freeagent]

Your board will die long before your CPU will.