E 8400 owners

Buntz

Limp Gawd
Joined
Apr 18, 2006
Messages
375
I am thinking of getting one of these. I would like to know what is your max overclock, at what voltage and your idle & load temperatures. Also how stable is it. Did you run Orthos and for how long? I am building a new computer soon and I would like it to be stable and able to run 24/7.
 
E8400 @ 4127MHz with 1.42v on Air
Temps are around 48/55C idle/load
Orthos stable around 4hrs.
 
8400 @ 4300 (9 x 478) at 1.45v vcore. idle temp 37c (seems high) but load temp is only 62c. this is almost 40c below the tmaxj for a wolfdale chip. q746a, pack date 1/10, from neweggs nj warehouse.
ultima 90 w/ tt 92mm smartfan. ran occt in cpu mode for 2 hours , and ran 3dmark 05 and 06 while occt was running. it hasnt hung or crashed since i got it a few days ago, and it has been on 24/7 since then. played crysis for 3 or 4 hours last night. my kid played tf2 for around 6 hours the day before. seems pretty stable to me, because thats about as hard as its going to be run.
 
e8400-1.jpg
e8400
VID: 1.1125v (stock)

OC'd currently testing: (I haven't had time to really test /tweak higher YET)
9x434 = 3906Ghz

vcore in BIOS: 1.3875v

vcore in windows: 1.272v (major vdrop, and nearly no vdroop)

load temp: 64-65C

idle temp: 45C - not really "idle", but just me surfing, music, about 10 minutes after Priming for a few hours.

room temp: 25C

Edit: Well the chip doesn't seem to want to do 4Ghz, at least not with the voltage that I feel safe giving it.
 
Hey, what are you guys using/what version to test temps?

My box is outside, currently -3C outside.

At stock, 3ghz:

Coretemp .96.1 = 35C no matter what
Speedfan 4,33 = -2C idle, 7C load
Everest = doesn't show idle, 7C load

Is it actually running this cold? My old E4400 would run at 17C idle... I have a hard time believing the CPU is that close to ambient.

Going to post in OC/Cooling...
 
In all of the posts I've read on multiple sites it seems that this chip just doesn't report temps correctly. I've just got a feeling that Intel is going to fix this, and that's what's keeping me from getting one right now. We'll see how that goes, great thread so far.
 
VID 1.0375. TankGuys has some still left in stock with the pack date 1/4/08. I just got this today (on water, ambient room is 20.3C)

Thermistor under chip is reporting consistent temps with onboard software (about 10 lower than coretemp). This is in-line with the 6850 difference in coretemp and the thermistor. Coretemp might be a tad over in my experience. My chip is probably running between 47 and 54c from my experience with my setup. This chip is a few degrees cooler than my 6850 and takes a much lower vcore to reach oc's. This pretty nice. I couldn't get past 5 minutes orthos at 1.58 4ghz on the 6850.

vcore (load) = 1.414 actual (measured by DMM)
vid2.jpg
 
Thanks everybody. Keep them coming. I will be on water when I build this computer so I should have no problem hitting over 4.0 with this CPU. Also let me know what motherboard and memory you are running if you do not already have it in your sig. Thanks again.
 
See, I don't know if you can trust the coretemp reading. For example, CPUZ say my VID is 1.088, which sounds about right, while coretemp says its 0.98.
 
E8400 4.35GHz at 1.5V but as Intel say over 1.45V can cause rapid deterioration of the chip I reduced to 4.275GHz at 1.45V.

Supporting hardware
Thermalright Ultra-120 Extreme cooler
120mm 68CFM 22dB fan
MX2 paste
Gigabyte GA-X38-DS4
 
Batch Q745A553 Packed 12/27/07

I'm at 8.5 x 500 4.25 GHz and stable on a quick 30 min OCCT at 1.39v

I'll do a better stress test tonight when I leave it running overnight.

Rest of rig in sig.
 
Luder[PAK9];1032008147 said:
See, I don't know if you can trust the coretemp reading. For example, CPUZ say my VID is 1.088, which sounds about right, while coretemp says its 0.98.

cpuz doesnt give vid, just whatever your vcore is set at.


q746a, pack date 1/10, fro m newegg nj warehouse. vid 1.0375 .if its anything like a quad, low vid usually means a not very good overclocker, and that it will run hotter than a chip with high vid at a given vcore. but not enough chips out to know if 1.0375 is low or high.

2233177473_82a5853f98_b.jpg
 
My VID = 1.1125V, coretemp 0.96.1

Something worth knowing...
There have been a few reports of E8xx series chips deteriorating quite a lot after only a week of use.
The blame is being put on chips that are overclocked but it is happening to some that are not hugely overclocked and using voltages much lower than 1.45V.

Until this is resolved, I have clocked mine back to 4GHz at 1.35V to be safe(r).
I lost 0.5fps in Crysis lol.
 
on a Gigabyte P35-DS3L bios F8a

VID: 1.1125
Currently at 4050mhz
450x9
1.312v BIOS, 1.264v CPUZ idle, 1.248v load

with ambient temp of 1C outside, Coretemp .96.1:
idle temp: 30C
load temp: 47C
 
on a Gigabyte P35-DS3L bios F8a

VID: 1.1125
Currently at 4050mhz
450x9
1.312v BIOS, 1.264v CPUZ idle, 1.248v load

with ambient temp of 1C outside, Coretemp .96.1:
idle temp: 30C
load temp: 47C

Very nice, I'm on the same motherboard, bios, and VID:

4050mhz
450x9
1.35v BIOS, 1.31v CPUZ idle, 1.28v load

Temps are reading 45 idle/58 load in Speedfan, 50 idle/63 load in core temp with a Zerotherm Nirvana. Of course I'm at room temperature, not a 1C icebox.
 
Whoa..An average overclock of 4Ghz...That is pretty damn amazing.. Now i'm begining to think if I should buy an E8400........
 
Very nice, I'm on the same motherboard, bios, and VID:

4050mhz
450x9
1.35v BIOS, 1.31v CPUZ idle, 1.28v load

Temps are reading 45 idle/58 load in Speedfan, 50 idle/63 load in core temp with a Zerotherm Nirvana. Of course I'm at room temperature, not a 1C icebox.

Yeah I know, I'm a cheater... I am actually at 49C now, after running Orthos Small FFT for an hour and 5 minutes. I expect a few degrees drop when the weather cools down again.
What ram do you have? I'm using a 2x multi so I have a 1:1 FSB:RAM ratio, but I think I'll have to loosen up the timings to overclock it much more. Then again I'm also using a 4x1gb setup and I've read all over the place that motherboards don't really like having all 4 slots full.
 
My VID = 1.1125V, coretemp 0.96.1

Something worth knowing...
There have been a few reports of E8xx series chips deteriorating quite a lot after only a week of use.
The blame is being put on chips that are overclocked but it is happening to some that are not hugely overclocked and using voltages much lower than 1.45V.

Until this is resolved, I have clocked mine back to 4GHz at 1.35V to be safe(r).
I lost 0.5fps in Crysis lol.

Have you got any linkage for those reports? I'm planning on getting one of the new c2d cpus and would like to avoid frying my CPU in a week lol
 
What ram do you have? I'm using a 2x multi so I have a 1:1 FSB:RAM ratio, but I think I'll have to loosen up the timings to overclock it much more. Then again I'm also using a 4x1gb setup and I've read all over the place that motherboards don't really like having all 4 slots full.

I'm running Corsair XMS2 at a 2x multiplier. At DDR800 was at 4-4-4-12 timings, but had to add another .1v for DDR900 and drop down to 5-5-5-15. Anything lower and I had no stability. 2 Sticks of 1GB each.
 
Anybody running on a Gigabyte P35-DS4? I've got mine at 4.0 with a nice low 1.25 volts, but I'm getting suspiciously high temp readings - 53/54 idle and 72/73 load with an Ultra-120. The heatsink is plenty cool to the touch, as is the air blowing through it, so I'm thinking those temps might be bogus. My VID is either 1.0625 (coretemp) or 1.175 (BIOS) so I'm not pushing too many volts through it - so I find it hard to believe that it idles at 50+C. I tried reseating the HSF and even lapped the processor (my Ultra-120 was already lapped) - no difference at all.

Anybody else getting high temps on a DS4?
 
Anybody running on a Gigabyte P35-DS4? I've got mine at 4.0 with a nice low 1.25 volts, but I'm getting suspiciously high temp readings - 53/54 idle and 72/73 load with an Ultra-120. The heatsink is plenty cool to the touch, as is the air blowing through it, so I'm thinking those temps might be bogus. My VID is either 1.0625 (coretemp) or 1.175 (BIOS) so I'm not pushing too many volts through it - so I find it hard to believe that it idles at 50+C. I tried reseating the HSF and even lapped the processor (my Ultra-120 was already lapped) - no difference at all.

Anybody else getting high temps on a DS4?

I do. But its not the DS4 making the high temps. If you look through other 8400 threads, you will see some of the 8400 have problems with their diodes so it doesn't read out the correct temp..

My 8400 shifts maybe 1C on one core and doesn't change what so ever on the other when I put 400FSB off the bat. I had a 6750 before me 8400 and it ran at 17C on both cores IDLE and didn't hit 45C on load. Core temp says I'm hitting in the 60s on load. So know 100% the temps aren't right.

I reseated my TRUE 5 times.
 
I do. But its not the DS4 making the high temps. If you look through other 8400 threads, you will see some of the 8400 have problems with their diodes so it doesn't read out the correct temp..

My 8400 shifts maybe 1C on one core and doesn't change what so ever on the other when I put 400FSB off the bat. I had a 6750 before me 8400 and it ran at 17C on both cores IDLE and didn't hit 45C on load. Core temp says I'm hitting in the 60s on load. So know 100% the temps aren't right.

I reseated my TRUE 5 times.

Yeah, I've been following those threads, and my previous IP35 Pro was all jacked up, but I was looking for some confirmation that others were showing high temps on the DS4 - my temps track okay, they don't freeze at a certain point or anything, they just seem about 15C too high.
 
24/7 clock on my E8400 is 4.05Ghz (450x9) @ 1.33v using my MSI Neo2-FR mobo. Load temp of 49-50c via coretemp while running Orthos. 4.2Ghz is stable as well, but needs 1.425v to do it and full load temps jump up to 58-60c via coretemp when running Orthos.
 
Have you got any linkage for those reports? I'm planning on getting one of the new c2d cpus and would like to avoid frying my CPU in a week lol

I knew this would bite me as I didnt take note of where I read about it.
I'm pretty sure it was www.xtremesystems.org but I cannot search their site as the picture with the authorisation code you need to type in never appears.

After searching with google and reading everything for about 2 hours, the following make reference to the problem:

http://www.xtremesystems.org/forums/showthread.php?t=175584&page=2
Post 26 mentions it and post 47 a guy has experienced it

http://www.xtremesystems.org/forums/showthread.php?p=2747129
A discussion on the topic.

http://www.xtremesystems.org/forums/showthread.php?t=173999&page=24
post 591 and 592 reference 8 to 9 CPUs that are degrading
The last links to a Greek site about the problem but I dunno what it says.

http://www.xtremesystems.org/forums/showthread.php?t=173999&page=32
Post 794, this guy can only run at stock speed now.

http://www.xtremesystems.org/forums/showthread.php?t=154898&page=141
post 3512 talks about 2 that died.

I'll keep my eye open for the thread that alerted me to the problem, soz I cant find it.
 
Wow, this dedragation thing is starting to build some validity. I did a lot of searching and reading and found the same as the info in the above links. It looks like mostly hardcore overclockers are affected, and that's the current OC favorite.

So it shouldn't take much longer to see some proof and how intel responds.

Here's my prediction:

INTEL: We have seen no evidence to reflect that our processor series x8xxx have any signs of dedragation whatsoever, or any processor line for that matter.

CUSTOMER: But my Q6600 doesn't do it, nor does my 6750, or my old pentium D, and I OC'd the hellsorz out of them too, why only the x8xxx series???? wtfsaucesorz???

INTEL: Please see our first response, thank you.
 
hmm, well I had my E8400 orthos stable last week 4127Mhz at 1.42v, and all of the sudden became unstable.

Now I'm at 3986Mhz at 1.34v, and back stable again. I sure hope I didn't "degrade" the chip. If I do, I'll just RMA it with newegg.

But makes ya wonder... :eek:
 
Intel lists 1.3625V as the max safe voltage for these chips, so it's no surprise people are seeing some frying action at 1.4V and higher.
 
Luder[PAK9];1032019362 said:
Intel lists 1.3625V as the max safe voltage for these chips, so it's no surprise people are seeing some frying action at 1.4V and higher.

For me it is hard to determine what voltage I'm actually at. CPUZ, Speedfan, and CPUID HW Monitor all say my CPU Core voltage is 1.25v, but in BIOS I've set it to 1.318. If this is the case, I still have a ways to go before 1.3625. But if we're going by the BIOS setting, I'm nearly at my max with extremely low temps. It seems other people have quite a large vdrop/droop with the DS3L though. It was the same with my E4400, I had approximately .06v decrease from BIOS to software reading. Maybe it's time to borrow a voltmeter and check for myself.
 
Luder[PAK9];1032019362 said:
Intel lists 1.3625V as the max safe voltage for these chips, so it's no surprise people are seeing some frying action at 1.4V and higher.

Interesting, can you tell us where you saw that?
 
According to the Intel website, VID voltage range for the E8400 is 0.85v - 1.3625v.

Keep in mindd that this is the VID range, and not necessarily the max safe voltage. If I limited my OCs to the VID on my Q6600, I'd never have gotten past 3.2 GHz.
 
According to the Intel website, VID voltage range for the E8400 is 0.85v - 1.3625v.

Keep in mindd that this is the VID range, and not necessarily the max safe voltage. If I limited my OCs to the VID on my Q6600, I'd never have gotten past 3.2 GHz.

Actually Im under my VID for my chip which is 1.5 to get my 3.3 OC. I wouldnt want to go higher than that. I think its a good reference to stick to.
 
mine's run 1.36v in bios on stock hsf @ 446fsb/4005mhz since about jan 20... no issues whatsoever, 11.4 second 1M PI
 
Damn it. I was just getting ready to buy one. Now with degradation problem I do not know if I should take the chance. I was just thinking if this problem is real what about the other 45nm CPU that are getting ready to come out . Will they have the same problem. I was also thinking of buying a 9450, If it has this problem too, and with the low multiplier you will not be able to overclock it worth a damn.
 
I just picked up an E8400 from a local Microcenter (it's still $189)
Installed it and o/ced to 4005mhz right away (9x445) on P5E. First strange thing I noticed was that the idle temperature is quite higher than others reported. Mine hovers around 45C:eek:, and the max load temperature running OCCP for 2 hours was 67C.
I tried lowering the voltage and 1.31V (actual) is the lowest to sustain 4005mhz without errors on OCCP, and it still reached upto 67C. I also reseated the HSF couple of times which didn't change anything. What else can I try? Can this be a reason for an exchange?
 
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