conroes degrading?

I can not think of another way to describe this...

setup 1:
p5b
2*512 5300 crucial
6600
big typhoon

At first I was running 3.7ghz 1.65v 24/7 for a week or two then it started BSODing

Set 3.6 and I was fine

Switch to water and I still can't run 3.7

setup 2:
xbx2
2*1024 6400 2gbhz and the crucials from setup 1
3060 xeon
big typhoon

When I got the chip I could:

orthos 3.75 1.5v
3946mhz 3d 1.55v
4ghz 8m 1.55v 1333 strap

I ran 3.75ghz for a while then one day it rebooted so I just stuck with 3.6

Without changing anything I vmch modded my board so I could run 4ghz on 1066 strap.

4ghz won't post.

Try 2507 bios, same thing.

Try 3946mhz again and it crashes 3dmark. 1.575v and 3946mhz works.

Try 4ghz and it black screens after post flash screen.

Previously, 4ghz would boot fine on 1333 strap and 1066 strap would hang at the windows loading screen, not it just goes to a black screen.

I remounted the typhoon twice with the same amount of pressure, same TIM (ceramique), same ambient, same CPU load temps, same BIOS settings, same EVERYTHING, and no go with my old settings. What is going on?

3.7ghz 1.65v 24/7 for a week or two could have been the issue with the 6600, as for the xeon, I am not sure unless there is an issue with your mch mod.

When you run an overclock that high any number of things can contribute to instability. It could be your RAM, the motherboards, the power from the wall, anything. I wouldn't instantly assume it was the CPU based on such minimal evidence.

Minimal evidence?

I've used

2 boards
2 cpus
3 sets of ram

Same thing happens

Well, any piece of silicon will degrade if its pushed beyond its comfortable limits for extended periods. Perhaps you've found that limit for your chip. Cant take that much voltage I guess, and the Xenon maybe can since its a heartier tested chip.

This is pretty disconcerting for sure.

Quote:

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Originally Posted by Gautam

This is pretty disconcerting for sure.

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Ya really! What the hell:( . I guess im staying @ 1.45Vcore for now on.

Quote:

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Originally Posted by newls1

Ya really! What the hell:( . I guess im staying @ 1.45Vcore for now on.

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Huh..first report after 6-7mo with conroes???

who is to say the 2x 1gb ram and 2x 512 ram is not playing as happy with time....

also how long were they orthos stable? small fft, large fft, blend?

I would think that if these chips were degrading we would be hearing alot more about this here at XS...many are running 1.55v+....

maybe air cooling is part of the issues as ambients maybe are changing too...

also vmodded mobo..any chance you could a mobo problem from this..not really getting stable and consistent vcore?

1.325 vcore---1.55v =17%
1.525=15%
1.5v=13%
those values are not considered extreme....

It was an mch mod, stable vcore isn't a concern with that.

What do you mean 2gb vs 1gb, I used both.

2:30 hour orthos small ftt, then 24/7 WCG stable for weeks until it just crapped out.

Ambients were the same.

Now that I think of it, maybe I was running 1.565v and not 1.55, 1.565 almost completed 3dmark and the fan I'm using now is slightly weaker than the m1a @ 12v.

I really can't even tell at this point, this board is totally fkd. xbx2 is the worst board I've ever touched, hands down.

Electromigration and Sudden Northwood Death Syndrome returns

Don't the voltage mods put extra strain on the motherboard power components? Maybe they are failing? NFI really, just came to mind.

Quote:

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Originally Posted by afireinside

It was an mch mod, stable vcore isn't a concern with that.

What do you mean 2gb vs 1gb, I used both.

2:30 hour orthos small ftt, then 24/7 WCG stable for weeks until it just crapped out.

Ambients were the same.

Now that I think of it, maybe I was running 1.565v and not 1.55, 1.565 almost completed 3dmark and the fan I'm using now is slightly weaker than the m1a @ 12v.

I really can't even tell at this point, this board is totally fkd. xbx2 is the worst board I've ever touched, hands down.

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I thought you were running...all 4 sticks together??

I was questioning whether the mods affect the mobo long term....

I really doubt 1.55 vs 1.565 is that big an issue..esp. on water

I just question whether this is a real issue or isolated(Electromigration and Sudden Northwood Death Syndrome returns..I sure hope not!!!)..I have seen no other reports, am I wrong

Quote:

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Originally Posted by afireinside

Minimal evidence?

I've used

2 boards
2 cpus
3 sets of ram

Same thing happens

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Yeah, and "a week or two". Not enough time to blame the chip unless those high voltages fried them.

You guys gotta remember that as CMOS processes that are used to produce these chips shrink they become more and more sensitive to voltage, perhaps by the last process' standards 17-20% more voltage wasn't a major issue but its not unreasonable to think that with their current 65nm that it might be. Remember how it was with the P4 2.4C when everyone started OC'ing them and pushing the volts up and several months later we started getting reports of them spontaneously dying and/or getting degraded overclocks? Personally I won't go over 1.5v with my E6300 no matter what the cooling as its really the volts that will end up severely degrading the life of your chip (heat does have an impact to mind you, but you have to run the chip at or over the recommended limit for extended periods of time before it really becomes an issue).

Quote:

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Originally Posted by mesyn191

You guys gotta remember that as CMOS processes that are used to produce these chips shrink they become more and more sensitive to voltage, perhaps by the last process' standards 17-20% more voltage wasn't a major issue but its not unreasonable to think that with their current 65nm that it might be. Remember how it was with the P4 2.4C when everyone started OC'ing them and pushing the volts up and several months later we started getting reports of them spontaneously dying and/or getting degraded overclocks? Personally I won't go over 1.5v with my E6300 no matter what the cooling as its really the volts that will end up severely degrading the life of your chip (heat does have an impact to mind you, but you have to run the chip at or over the recommended limit for extended periods of time before it really becomes an issue).

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Exactly. 1.3525v is the stated limit of the chip. Running 1.65v through it and expecting no repercussions is rather short-sighted.

Personally, I need my system to last so I shy away from extreme voltages.

Hmm, I'm running 3.73GHz, 1.5v now. Maybe I should notch it back down to 3.6GHz, 1.45v.

Quote:

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Originally Posted by afireinside

What is going on?

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See below.

Quote:

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Originally Posted by afireinside

I was running 3.7ghz 1.65v 24/7 for a week

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Mystery Solved!

Quote:

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Originally Posted by Anonymous

See below.


Mystery Solved!

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Thanks for the brilliant observation Mr. Anonymous. It was more like 1.55v because my p5b wasn't vdroop modded.

Quote:

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I thought you were running...all 4 sticks together??

I was questioning whether the mods affect the mobo long term....

I really doubt 1.55 vs 1.565 is that big an issue..esp. on water

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no, not running 4

The mod was on for all of 2 minutes and voltages were not changed with it

1.55 vs 1.565 wasn't on water

can we get a mod to move this into main Intel section

I am finding it hard to believe that 1.55v is causing an issue...way too many around here running that vcore with no reported issues

My 4 months old E6700 is running 24/7 at 1.75V in BIOS with watercooling, still at 3.9GHz, no degrading, no unstability ... i changed only many mobos, cpu is the same ...

Quote:

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Originally Posted by Cracker

When you run an overclock that high any number of things can contribute to instability. It could be your RAM, the motherboards, the power from the wall, anything. I wouldn't instantly assume it was the CPU based on such minimal evidence.

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100% agreed, Conroe does not degrade Sean.

Quote:

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Originally Posted by Anonymous

See below.


Mystery Solved!

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Ive run 1.67v measured for a week(only owned X6800 for a week :D), 24-7 and all was great :)
I should have about a year of 24-7 at over 1.63v between my last three cpus, all are 100% functional.

Quote:

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Personally I won't go over 1.5v with my E6300 no matter what the cooling as its really the volts that will end up severely degrading the life of your chip (heat does have an impact to mind you, but you have to run the chip at or over the recommended limit for extended periods of time before it really becomes an issue).

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Heat degrades electronics, voltage also can, but a simple 25% increase or so in voltage wont hurt anything long-term. (unless you expect to be 80 years old and still using it, or your grand children to be using it!)

I have been running 1.61v through my cpu for 6 months on phase. No problems whatsoever. Still has stable as the day I got it.

Quote:

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Originally Posted by nealh

can we get a mod to move this into main Intel section

I am finding it hard to believe that 1.55v is causing an issue...way too many around here running that vcore with no reported issues

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It WAS in Intel section until it got moved...

Quote:

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Originally Posted by fhpchris

Ive run 1.67v measured for a week(only owned X6800 for a week :D), 24-7 and all was great :)
I should have about a year of 24-7 at over 1.63v between my last three cpus, all are 100% functional.

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Quote:

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Originally Posted by Yoxxy

I have been running 1.61v through my cpu for 6 months on phase. No problems whatsoever. Still has stable as the day I got it.

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Quote:

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Originally Posted by OBR

My 4 months old E6700 is running 24/7 at 1.75V in BIOS with watercooling, still at 3.9GHz, no degrading, no unstability ... i changed only many mobos, cpu is the same ...

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Quote:

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Originally Posted by nealh

I am finding it hard to believe that 1.55v is causing an issue...way too many around here running that vcore with no reported issues

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There is no consistent and reliable way to measure how these chips will degrade past the manufacturer's specs nor is there anything that suggests that they will all degrade in the same fashion/time period, only Intel would know and they don't exactly give that info. away. Not all of those P4C's started having issues at the same time you know, and there those who never had issues at all seemingly no matter what voltage they put their chips at.

Quote:

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Originally Posted by fhpchris

Heat degrades electronics, voltage also can, but a simple 25% increase or so in voltage wont hurt anything long-term. (unless you expect to be 80 years old and still using it, or your grand children to be using it!)

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There is no way for you to know this without NDA'd process info. from Intel, you wouldn't mind posting though if you do have it right?

the problem I see is this..it maybe that xs voltage does cause an issue
but heat is a killer as well...and we all have seen stock cpu with stock HSF..have crazy temps..which even at normal vcore would and could be as bad....those concave IHS..are bad

I am guessing the safety margin is pretty high or we would be seeing much higher failures rates here and around the net

BTW phase(sub-zero temps) does not prevent xs voltage damage...but lower temps make it more tolerable and slow the effects

concave IHS can lead to extreme temps...and the average user does not even check..if the system does not crash..they pay no attention

Heat and increased voltage are bad..together this is a horrible combination

I am not concerned at shortening like of my cpu from 10 yrs to 7 yrs or even 5yrs...C2D will be not even exist...my 2-3 yrs is a fair life