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Signs that your Overclock is killing your processor?

post #1 of 12
Thread Starter 
Hey guys,

I told a friend I was interested in trying overclocks as high as possible, even past manufacturer-recommended voltage specs, and he happened to have (most) of his old gaming computer lying around. I need to get my old PSU and HDD in to check the CPU exactly, but I believe the Mobo was an Nvidia 680 iLT or something, which narrows it down a bit.

Anyways, I was wondering if there are specific signs that let you know you are about to fry something, as on my newer, more expensive hardware I've kept my overclock well within limits (i5-2500k at 4.5 GHz 1.35 VCore). Obviously the method of overclocking is a bit different, so it is a learning experience too - catch is I'd prefer to avoid frying things as I have another friend who has only Macs in his house (and none of them have GPUs!), so he can't game on PC games with me, and after messing with it a bit I may give it to him so he can at least play games like StarCraft 2.

Second question: if I DO go past manufacturer-recommended voltage specs (I will stop if I have to regarding temps, as I don't have a bunch of money to spend on additional cooling), is the CPU going to die really quick? Should I back down the overclock for normal gaming usage?

Thanks!
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post #2 of 12
It either works, or it doesn't. That's the only sign.
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post #3 of 12
a hole melts into your cpu socket?
 
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post #4 of 12
Thread Starter 
So at some point you go from it just BSODing or not booting into Windows... to it just not turning on...ever again? tongue.gif

Should I have a fire extinguisher ready? Haha.
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post #5 of 12
Quote:
Originally Posted by cdrinkh20 View Post

So at some point you go from it just BSODing or not booting into Windows... to it just not turning on...ever again? tongue.gif
Should I have a fire extinguisher ready? Haha.

here is a super basic rundown:

1. set vcore to stock
2. increase bclk by just a little bit.
3. boot into windows, short stress test. if pass, repeat. if fail, see next steps. if overheat, drop everything back to stock and investigate cooling.

failed stress test or wouldnt boot?
4. increase vcore 1 tick
5. increase bclk just a little bit.
6. boot into windows, short stress test.

if pass, repeat steps 5+6. if fail, repeat from step 4. continue until temperatures approach manufacturer recommended max, or until you are happy with overclock, whichever comes first.

basically, you shouldn't get to the point where you destroy the chip, because you will see the signs of instability/overheat before then. if you see these signs, and continue oc'ing without taking the necessary steps (increase vcore for instability, or stop/upgrade cooling if overheat), then you have asked for hardware damage.

i don't think i've seen any chips killed doing basic oc'ing. i've certainly see more die from failure to protect from esd.
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post #6 of 12
Quote:
Originally Posted by macsters View Post

here is a super basic rundown:
1. set vcore to stock
2. increase bclk by just a little bit.
3. boot into windows, short stress test. if pass, repeat. if fail, see next steps. if overheat, drop everything back to stock and investigate cooling.
failed stress test or wouldnt boot?
4. increase vcore 1 tick
5. increase bclk just a little bit.
6. boot into windows, short stress test.
if pass, repeat steps 5+6. if fail, repeat from step 4. continue until temperatures approach manufacturer recommended max, or until you are happy with overclock, whichever comes first.
basically, you shouldn't get to the point where you destroy the chip, because you will see the signs of instability/overheat before then. if you see these signs, and continue oc'ing without taking the necessary steps (increase vcore for instability, or stop/upgrade cooling if overheat), then you have asked for hardware damage.
i don't think i've seen any chips killed doing basic oc'ing. i've certainly see more die from failure to protect from esd.

Nope not for sandybridge.

You dont want to touch the blck with sandybridge atall. only the multiplier there are hundreds of how to guides on this forum pop over to the cpu section where all the help you need is written in detail.

As for your cpu failing due to overclocking, Unlikely unless your really silly and pump 1.6v+ into it, with a mid range 4.5 - 4.8ghz overclock with no more than 1.45v with adequate cooling you will be fine for years to come thumb.gif
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post #7 of 12
Well I wouldn't use the term "killing"- that you could do from an LN2 run pushing 2v into the CPU or whatever. Degradation on the other hand can occur over a period of time. Signs your chip is degrading might be it no longer is stable at settings previously known to be 100% stable, or even failing at stock. On Sandy Bridge (since it's 32nm), prolonged exposure to high voltages (1.5v+ I'd imagine) can degrade the processor.
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post #8 of 12
Thread Starter 
Sorry if there was any confusion, I got an older computer I wanted to experiment with - I am happy with my SB 24/7 overclock. I now know I have a Pentium D processor to play with, so the previous advice should apply.

My question was more directed at overclocking not limited by temperatures - from what I can tell, it will just become unstable as it degrades, or if you push it too far, will fry.

Thanks for the tips!
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post #9 of 12
Quote:
Originally Posted by Chewy View Post

Nope not for sandybridge.
You dont want to touch the blck with sandybridge atall. only the multiplier there are hundreds of how to guides on this forum pop over to the cpu section where all the help you need is written in detail.
As for your cpu failing due to overclocking, Unlikely unless your really silly and pump 1.6v+ into it, with a mid range 4.5 - 4.8ghz overclock with no more than 1.45v with adequate cooling you will be fine for years to come thumb.gif

he did not say he had sandy bridge. he said he had an older processor, and i assumed that it would lack a multi.

my assumptions were clearly justified.

i'll say again, though, that overclocking really is not that dangerous as long as you keep an eye on temps and make small jumps. dont move settings too quickly and you should be fine.
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post #10 of 12
As long as you're within 5C of recommended temps you should be fine; unless you're doing an LN2 run or something heat will usually damage the processor before the voltage has a chance to.
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