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ACCIDENT!! HELP!! 3570K not stable anymore!!! - Page 4

post #31 of 74
Quote:
Originally Posted by AndyM95 View Post

Quote:
Originally Posted by Ukkooh View Post

-100 isn't near absolute zero. thumb.gif
That's not the point, the point is that too much voltage will kill a chip even if it's kept cool. High voltages overstress the transistors and cause them to fail. Every transistor has a maximum voltage that they can withstand between their source and drain, if you exceed that voltage they will fail. Most CPUs nowadays have low voltage transistors because they are more power efficient but also have a lower voltage threshold which means they will fail quicker. Put 2V through a 3770K under LN2 and it will die pretty quickly.

What happens is you breakdown the gate oxide.
post #32 of 74
Quote:
Originally Posted by dr/owned View Post

What happens is you breakdown the gate oxide.
Yup, resulting in leaky transistors which doesn't help anyone tongue.gif
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post #33 of 74
Thread Starter 
justanoldman I tried flashing using the 2 methods but still the same at 1.21V windows dont boot( before was stable for 1 hour) at 1.23V crashes as soon as I start the testing(Was before stable for 9 hours) any ideas please???
post #34 of 74
Quote:
Originally Posted by AndyM95 View Post

Are you being serious? When people do sub zero suicide runs their chips stay at below -100 but by the end of it their chip is dead because of the amount of voltage that has been put through it.
the properties of silicon at -200 degrees aren't the same as the properties at -278 degrees.
Quote:
Technically yes, if you had the entire chip at absolute zero then you could apply infinite voltage and it would be ok. But it's not possible to do this. a) It's impossible to reach true absolute zero b) it's impossible to do it for such a large object. c) impossible to maintain that temperature when you start running 10V through it.
Well, when we invent magic, my computer can run at 10GHz.
post #35 of 74
Quote:
Originally Posted by Ahmoody View Post

justanoldman I tried flashing using the 2 methods but still the same at 1.21V windows dont boot( before was stable for 1 hour) at 1.23V crashes as soon as I start the testing(Was before stable for 9 hours) any ideas please???
What happens if you try and go even higher with the voltage? Say 1.25V?
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post #36 of 74
Quote:
Originally Posted by srsparky32 View Post

voltage dosent kill chips, heat does. your chip's fine. do what andym95 said and reset the cmos (either pull battery from board for 30 seconds or hit cmos reset button)


Edit
no...electron migration only occurs if the electrons are moving around too fast (being too hot) ...if they are adequately cooled, then they move slower, hence lots of voltage can be pumped through the chip without hurting it. if you did 2v through a chip on air it would die/degrade very quickly due to the heat. but if you did 2v on liquid nitrogen, it would still be alive as the electrons are moving around extremely slow.

Quote:
Originally Posted by Tjj226 Angel View Post

Actually voltage has been shown to kill chips. The only reason I know that is because I thought the same thing until someone shoved a bunch of articles down my throat. I might be able to find them again if you want.

It is the combination of both. Running too high voltage speeds up electromigration, more heat does the same thing. More voltage usually makes more heat too.
Extreme cooling cut the heat way back, so using higher voltage does less damage.
Quote:
Originally Posted by Art Vanelay View Post

no, it's a combination of both.
You know that voltage is the delta potential energy of the electrons, right? Putting more voltage on them means that they dissipate more energy into the circuit.

A CPU on LN2 running 1.9V would be dead after a week of normal use.


That said, there is probably nothing wrong with the chip.

A week? Try years. It isn't the voltage alone that causes degradation. My 990x has had literally hundreds of hours running 1.8V +, 32nm was supposed to be pretty weak as far as degrading goes.
Quote:
Originally Posted by AndyM95 View Post

Are you being serious? When people do sub zero suicide runs their chips stay at below -100 but by the end of it their chip is dead because of the amount of voltage that has been put through it.

Suicide runs are for air & water cooling, extreme cooling wouldn't be too popular if chips died that easily. I freeze everything & have never killed a chip by running high vcore with extreme cooling, only chip I've ever killed from freezing was because I decided to see how it works with CLU on the die (it doesn't work).
    
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post #37 of 74
Thread Starter 
I'll try it but what's making me go crazy is that 1.23V was stable before why not now?? I'll test and post!
post #38 of 74
Quote:
Originally Posted by Ahmoody View Post

justanoldman I tried flashing using the 2 methods but still the same at 1.21V windows dont boot( before was stable for 1 hour) at 1.23V crashes as soon as I start the testing(Was before stable for 9 hours) any ideas please???
Like Andy said, try a little higher to see what happens.
To make sure everything is ok, go back to defaults, f5 in bios, then test with prime95 to see if there are any non oc problems.
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post #39 of 74
Quote:
Originally Posted by dr/owned View Post

As someone intimately familiar with Intel's process for testing die, I'm definitively telling you guys that voltage can kill a chip regardless of heat. To elaborate, you guys don't see all the chips that are thrown out because they work at 1.5V but die within a few minutes when pushed to 1.6V while being thermally controlled well beyond what a normal user does.

Just guessing but he probably put years worth of stress on the cpu with 5 seconds of 1.9V.

I completely agree with this. Heat is less of a concern. Just because the temps are low, it does not mean that the chip can run high voltages beyond normal limits without having a drastic effect.
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post #40 of 74
Thread Starter 
Im totally loosing my mind at 1.25V not stable and 1.27 not stable but this time instead of getting a blue screen and crashing the screen and mouse just freeze any ideas?? I used to get 1.21V stable!!!
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