Originally Posted by [CyGnus]
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