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E8400 Degradation 4.5 -> 3.6 Ghz - Page 9

post #81 of 91
Try not to bump threads older than a month, it pisses a lot of people off. It's ok if theres something new to add which hasn't really been said yet though.

Don't worry about it, you're new. Just a heads-up

And this is why I try to stay below 1.3625v. It has gotten me 4.25 ghz at 1.3v, and I need 1.45v to get a very unstable 4.5 ghz. Simply put, there's no performance gain you'll notice, and 1.45v isn't murdering the chip like some of you guys are, but still is higher than I am comfortable with.
    
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post #82 of 91
Yeah mines a bad overclocker.... Even to get 4.0 i need 1.41v.

I had a feeling I was thread digging but I didnt see where the last post date was lol my bad.

I actually googled CPU degredation to see if i could get an idea of what I'm in for... And stumbled accross this thread. So far its still running fine, but it seems if i lower the OC and volts it doesnt run very well.



EDIT: >< Now i see where the post date is.... Sorry guys.
Edited by AphexTwin - 3/27/09 at 5:28pm
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post #83 of 91
Intel's 45nm process is pretty fragile. It can't take volts that high, even for short times as you've found out

I haven't heard the same stories from people w/ 45nm AMD quads yet tho. they seem to be able to take 1.5v+ OK as long as it's cooled. However they OC better cooler, rather than w/ more voltage.
post #84 of 91
Quote:
Originally Posted by The_Parrot View Post
Ok all i can do is laugh at this guy lol.
WHAT DID YOU EXPECT it to do idiot. sorry 1.6v are you mad that chip should have never been allowed in his hands let alone his comp and after all the threads on the wolfies!!! come on
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post #85 of 91
Yeah I dont know.... This 8400 is the first chip ive done any major overclocking on.... Its my guinea pig.. I bought it with full intentions of cooking it basically. For now though it's still insanly fast. I love it. But I'd like to get my hands on one of those e8600's and see what one of them could do... Theyre so expensive though!
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post #86 of 91
I have my E8400 for 10months now 24/7 at 1.48v with no issues run it for 3weeks at 1.6v @ 4600MHz no problem, i bench with it at 1.68v at 4900MHz. Still Fine on air cooling.... If it dies lets get a Q9550 E0
post #87 of 91
Congrats on the resurrection!

Já agora, és o primeiro tuga que vejo aqui!
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post #88 of 91
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Originally Posted by PanicProne View Post
Congrats on the resurrection!

Já agora, és o primeiro tuga que vejo aqui!
Me gusta tacos y burritos! Ay ay ay! Mi nombre es cesto de papeles de la noche.
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post #89 of 91
Quote:
Originally Posted by [CyGnus] View Post
I have my E8400 for 10months now 24/7 at 1.48v with no issues run it for 3weeks at 1.6v @ 4600MHz no problem, i bench with it at 1.68v at 4900MHz. Still Fine on air cooling.... If it dies lets get a Q9550 E0
Do a barrel roll!

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post #90 of 91
Quote:
Originally Posted by [CyGnus] View Post
I have my E8400 for 10months now 24/7 at 1.48v with no issues run it for 3weeks at 1.6v @ 4600MHz no problem, i bench with it at 1.68v at 4900MHz. Still Fine on air cooling.... If it dies lets get a Q9550 E0
That is actually not surprising. Intel has stated, as had many other researchers, that variable quality in interconnects etc. was one of the biggest obstacles in early 45nm and would lead to larger percentages of less than perfect cpus at the outset. However, they also stated this would quickly get better.

If you look at first run of 45nm chips like E8400, in OCing forums with people giving them high vcore and/or vtt, roughly 1 in 3 reporting, said they had some issue of degrading, ie needing .03 to .05 more vcore for same OC or having to reduce OC, and smaller percentage had severe near death degradation, including a couple run at stock vcore. Also intel wrote absolute max 1.45 vcore on these chips.

Later when i7s came out, obviously as predicted technology improved, absolute vcore increased to 1.55.

I have no doubt some cpus that suffered abuse had no degradation, some had mild and some severe degradation.

And now that process has improved, along with probably less severe voltages, not getting degradation threads anymore, except few still posting with early 45nm cpus.

And my E8400 only had mild degradation, despite my benching at 1.6vcore in 10C ambient (outside temps for hours and hours). And drilling a hole through IHS, and later into core (just little ways) for temp testing. Then decided to kill chip or get 5ghz (had gotten 4.9ghz before) but failed at both. roughly 5 hours at 1.9 to 2.0 vcore, max vtt, but no 5ghz, computer popped off 20x. And that cpu still works, though now running stock, but still at stock vcore, although last checked would still run 4ghz at same .05V more vcore than when first got it.
Edited by opt33 - 1/12/10 at 12:35pm
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