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Stress Testing Warning - Page 7

post #61 of 113
I was against long stress testing, but since I have oc'd properly, and took the patience to fine tune and test with prime (small fft & blend) and ibt, not only did I achieve a higher overclock but a much more stable system. And remember kids an unstable system isn't just much slower it’s also much more uncool, imagine your geeky friends coming over to see your beast of a pc, and it crashes whilst doing a gta IV mission or even worse, on youtube.
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post #62 of 113
Quote:
Originally Posted by B!0HaZard;13149501 
Frequency has something to do with it, because higher frequency = higher power consumption = more A = more heat. It's not frequency itself, though, if that's what you meant.

Exactly. If that heat is kept under control, and it's a "golden" chip that doesn't need the volts, then that particular CPU will last just as long as a lesser clocked chip that tops out at a lower frequency at the same voltage and kept at the same temp, provided neither have a dud transistor somewhere.
Quote:
Originally Posted by kromar 
you forgot to ask one important question... will a unstable overclocked cpu that runs normal tasks over a long time shorten the lifespan more than several long stress test that ensure the cpu is stable?

By a huge margin, yes. I've observed it myself, twice. Sad to see those chips go. One was an old P3, a 250nm 2.3v beast that i'd overclocked to 903 MHz. It went unstable at stock speeds in a week, although I continued to use it and put up with the blue screens until I could afford my next system. Before this it had run at 800 MHz running seti@home for about 4 years and was always stable until I got foolish.
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post #63 of 113
Quote:
Originally Posted by Iroh;13150138 
Exactly. If that heat is kept under control, and it's a "golden" chip that doesn't need the volts, then that particular CPU will last just as long as a lesser clocked chip that tops out at a lower frequency at the same voltage and kept at the same temp, provided neither have a dud transistor somewhere.

Oh, if that's how you look at it, yes. An average Joe's CPU running stock @ 70C will die faster than an identical CPU running with a 200% OC with low volts @ 40C.
Of course, there's still the increase in amperes, but I don't know how that'll affect the CPU when it's cooled well.

Anyway, my point with the first post I made in this thread was that increasing frequency will increase power consumption which will increase heat and that will kill the chip faster than a stock chip even if they're using the same VCore. This means that refusing to overvolt because you don't want your chip to degrade faster, is stupid, 'cause a mere frequency increase will mean that your chip dies faster than if it had been stock.
Edited by B!0HaZard - 4/16/11 at 10:08am
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post #64 of 113
I test all my CPUs for 48 hours with Prime95 and LinX... Never hurt a single one. Transistor death is, I think, largely a process related exponentially to heat. I'm not worried, and I've OC'd many processors.

The thing that'll screw up your computer much more is having an unstable overclock, which I do have experience with also.
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post #65 of 113
I`m not shure if i`m allowed to post here since i might be seen as an enemy. So sry for that!
OT: If you need your PC for 3D rendering and make an overnight render or overweekend render the the CPU will be used for a very long time and very intensive.
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post #66 of 113
Quote:
Originally Posted by Mr.Eiht;13152978 
I`m not shure if i`m allowed to post here since i might be seen as an enemy. So sry for that!
OT: If you need your PC for 3D rendering and make an overnight render or overweekend render the the CPU will be used for a very long time and very intensive.

Good point - I did this many times at university. We tried to use backburner but everyone elses pc was so on-edge with overclocks I'd probably have ended up with polys sticking out everywhere biggrin.gif
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post #67 of 113
I really don't see the use of it at all, these programs are designed to load a CPU above any normal use, me personally, I don't load mine under normal use for longer than 4 hours.

I find if my OC is unstable, it will show up within 2 hours of OCCT, or 50 passes of IBT. If I really wanna make sure my OC is rock stable, I'll do 2 hours OCCT, 2 hours Prime, then 50 High passes of IBT. But I can honestly say the OCs I've had that I've only done 2 hours OCCT on haven't crashed on me once, ever. Touchwood.

Each to their own I guess. tongue.gif
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post #68 of 113
My 1055T with stock cooling would probably hit 50+oC and last long enough till my next upgrade. My 1055T @ 4.2Ghz @1.52v hits 44oC max running both Prime95 and 95(64bit) for 16hrs straight. Should last just as long.
post #69 of 113
24 hours causes unecessary stress on the CPU imo.

If you wanna kill it and reduce the lifespan, go ahead.
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post #70 of 113
Quote:
Originally Posted by Stefy;13156614 
24 hours causes unecessary stress on the CPU imo.

If you wanna kill it and reduce the lifespan, go ahead.

Um, I think that's why they call it stress testing? wink.gif I think that 24 hours is a bit much, but I'm not against it. I usually run 50 runs of LinX with max RAM, and then 8-12 hours of Prime95 to ensure stability. So far though, with my SB setup, I've only done the 50 runs of LinX and I've been playing a lot of games with no issues at all. Do I consider my OC rock solid stable? Maybe not rock solid stable, but pretty stable for me. The life of these chips will be degraded the more stress we put them through, but for the most part we will be upgrading our hardware long before these 'lifetimes' are met/exceeded.

The amount of time one runs stress tests is up to them. Some people are happy with a few hours, some want longer times. In the end it's the user of the hardware that it matters to. In the end, as always, it's really up to the person how much stress they want to put on their hardware.
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