Has anyone fried an E8400/8500/8600 from overclocking?

[jaredpace]

Anyone successfully killed a wolfdale e8xxx? I've never actually seen anyone talk about it...


If you did, what were temps, volts?

[Ozzfest05]

I actually tried to kill my E8500 that I previously had and no go 1.9 volts benching on dry ice and 1.65 on air benching I put it though some torture and it just loved it this was C0 stepping aswell

[Bigred1]

I have ran my E8400 C0 at 1.65 volts air also and it still just keeps on going.

[metro.cl]

I actually tried to kill my E8500 that I previously had and no go 1.9 volts benching on dry ice and 1.65 on air benching I put it though some torture and it just loved it this was C0 stepping aswell

Same thing here done that on 3 E8XXX chips, one E8400 ES, one E8400 retail and one E8500 not a single problem :) (tested on high volts on air, water and Dry ice).

[mrcape]

I killed one this summer at 2.05V+

It was fun!

[ReverendMaynard]

I didn't actually kill it, but I put a good dent in an 8400's lifespan. First boot was 4.5ghz 1.6v 1.45v VTT. It didn't clock so well after that lol.

[dinos22]

i had two CPU s die on my in 790i boards
actually boards died and took CPUs with them
E8500 & E8600
LN2 OCs of course

[jaredpace]

so really, no fried chips at less than 1.7vcore? I'm going to run 24/7 at around 1.6 air cooling temps < 85C

[ReverendMaynard]

so really, no fried chips at less than 1.7vcore? I'm going to run 24/7 at around 1.6 air cooling temps < 85C

It's the VTT that roasts these badboys. If you stay under 80C 1.6v core and 1.35VTT it'll be fine.

[SNiiPE_DoGG]

It's the VTT that roasts these badboys. If you stay under 80C 1.6v core and 1.35VTT it'll be fine.

uhhh, not true. benchzoner ran two e8x00 cpus at some ridiculous vtt and neither one of them died running prime95 24/7

I run my q9650 at 1.5vtt and it only clocks higher every day I play with it :D

[jaredpace]

I really think all the "1.4v safe zone" bs is a low estimate. From posts here, i've only seen super high 1.9,2.0,2.1 vcore kill these cpus (or high vtt/pll). seeing this, i don't see a prob with ~1.65v if temps are okay...

[SNiiPE_DoGG]

I really think all the "1.4v safe zone" bs is a low estimate. From posts here, i've only seen super high 1.9,2.0,2.1 vcore kill these cpus (or high vtt/pll). seeing this, i don't see a prob with ~1.65v if temps are okay...

Spot on jared :). As long as you keep your temps under control nearly any voltage is a-O.K.

[GAR]

seems like only dead cpu's are from extreme overclocks, so as long as you keep volts below 1.55v with good temps, you should be ok.

[noinimod]

Spot on jared :). As long as you keep your temps under control nearly any voltage is a-O.K.
But is it true that while the temps are low, there can still be damage being done to the circuitry if the volts are high enough? There's been some people around here who claim to have had low temps while running their wolfies at high vcores but still found some 'damage' to the chip - permanent lowered FSBs after a suicide run :confused:

[SNiiPE_DoGG]

But is it true that while the temps are low, there can still be damage being done to the circuitry if the volts are high enough? There's been some people around here who claim to have had low temps while running their wolfies at high vcores but still found some 'damage' to the chip - permanent lowered FSBs after a suicide run :confused:

generally these people are a) lying and/or b) have not isolated the fault to the processor alone and as a result cannot be taken seriously.

I have said this in other threads that a processor is manufactured to a much higher standard of quality than for instance your run of the mill nvidia or gigabyte board. It is my educated belief that it is not the cpu that is hurt in these so called instances of "degradation" but rather it is the result of low quality power circuitry in the motherboard or other components on the motherboard being faulty, not the CPU.

When a chip dies from too much vtt (or so the assumption is that it died from that) it seems to me that it is an issue of poor voltage stability than anything else.

I think it would be more useful to survey what motherboards and full system specs of the dead processors and "degraded" processors than to just sample what voltage people are running at when they kill chips.

[PolRoger]

My first E8600 died while testing on my UT P45-T2RS. When it happened I was surprised and quite disappointed because it had been a good chip.

I was running MemTest off a floppy disk at 500x9.5 with 5/6 divider. DDR was 2.3v and MCH/VTT were probably both less than 1.4v. Vdroop was enabled and I was bumping up the vcore in the BIOS and then checking MemTest for errors. I was in the 1.475v range and had moved up around 1.500+v. Then after saving a setting I tried to reboot and nothing happened. I tried to clear CMOS and still nothing. At first I thought the problem might be with my board but I swapped in my E8400-C0 and it booted right up. I then tried my E8600 in two other boards and I still had a no boot with both of them.

[MarcusFoX]

killed 2 of these... e8400 c0's

whats killed them... by far the biggest killer is Vtt about 1.65v and pll above 2.4v

[Leeghoofd]

I wish ya good luck with ya experiment... what do you think to gain with a wolfdale at 1.6 ? do you think more volts means stability ? you think you can run these babies at 5ghz on air daily because you pump more volts... good luck I would say... don't come crying afterwards when you damaged ya E8600 or co... each CPU has it's sweetspot, so does each mobo and at a certain point it gets harder and harder to stabilise it... more volts maybe... but not solely on air...

Imagine you get a hothead (if you can trust the readouts of 45nm at all)... end of ya dreams... be realistic 4.5Ghz is already pretty nice and you don't need 1.6vcore fo that

[jaredpace]

leeghoofd- imo between 1.400v - 1.600v lies a sweet spot for north of 4.6ghz on air (stable). I'm going to give it a try - will let you guys know if it goes boom.

[Leeghoofd]

I had several E8400/E8500/E8600 EO CO whatever you want and not even with added volts would some be stable at just 4.5... (I'm talking all 500FSB and more here) and those were all on watercooling... Oc'ing is not just about pumping volts, it's a mix of hardware/cooling setup... some cpu's do +600FSB some cap out even lower...

Looking forward to ya results...but I think you are setting ya goals to high and just want to spare you from dissapointment...

Next up which mobo , ram and PSU will you be using ?

[gurusan]

Put my current E8500 through hell (1.6Vcore) and clocks just as well as it did when I got it. 4.6ghz 1.408V stable 24/7....still can't manage to get 500fsb stable enough for a 3dmark run though. Quite annoying, I dunno if it's my memory settings or what. I've not tried over 1.34VTT as i didn't think it was necessary...

Also been through 17 other wolfdales and not once seen a single sign of any sort of degradation.

[Leeghoofd]

That's the instability I'm talking about... it can be prime stable linpack stable yet cap out even under messenger... more volts don't think so... 4.5Ghz is already nice (but not guaranteed) but I would never run it at 1.6 on air to get from 4.5 to 4.6 sort of stable... we are not talking about a 10 minute benchmark here... he wants to pump them volts 24/7...

I want to know on which board, PSU, cooler combo he want's to give it a go on

[chris.y2k.r1]

I've been running my E8400 in a Maximus Extreme with 1.60 Vcore, 1.78 PLL, 1.68 FSB AND 1.76 Vnb. This is 24/7 on some pretty extreme water and I've never had any issues due to volts. My CPU's max stays under 67c, my NB is under 44c. I did just have to RMA the mobo and it might have taken out the CPU when it exited this world but it had absolutely nothing to do with volts. It simply just decided to die when I put new memory in. The board has always been weird that way.

[jaredpace]

well i had 500 x 9 - 4500mhz on an abit ip35e, supertalent 2x1gb ddr2 800 - 1000mhz @ 2.3v, CO E8400 @ 4.5g 1.44v actual (1.51v bios) air cooled lapped true/ihs. plan is to get an E0 E8400/8500. edit: psu was Antec earthwatts EA-500