**Official e8400/e8500 Retail OC Thread

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04-16-2008, 05:18 AM
kadir_slayer

hi,

ı have a e8400 q746a514 and it used to work at 4.05 at 1.432 voltage(load) 12 hours stable then a few days ago I run orthos again it gave an error half an hour later. I pissed off because ı had spent so many hours to make it stable for 12 hours orthos. there is already 10 c difference between cores at idle so I bought another e8400 . today I received but haven't tried it yet. it is a q802a570.. is there anyone knows anything about this batch??? and what is the highest vcore you recommend to avoid degredation?
04-16-2008, 05:59 AM
JCGhz

I stayed just under 1.4v.. i wont go over 1.375v and im @4.1 on Air my Chip is a Q745A731 1.9.08
04-16-2008, 06:15 AM
CrazyNutz

Quote:

Originally Posted by kadir_slayer

hi,

ı have a e8400 q746a514 and it used to work at 4.05 at 1.432 voltage(load) 12 hours stable then a few days ago I run orthos again it gave an error half an hour later. I pissed off because ı had spent so many hours to make it stable for 12 hours orthos. there is already 10 c difference between cores at idle so I bought another e8400 . today I received but haven't tried it yet. it is a q802a570.. is there anyone knows anything about this batch??? and what is the highest vcore you recommend to avoid degredation?

Ok, It's not degrading the 45nm cpus just need a small bump in vcore
after a few weeks of burn-in, to regain stability.

Here is a quote from me:
It is apparent now that the 45nm CPU's have a burn-in period of about
1 - 2 weeks, after this time the CPU's will need a small bump in vcore
(.024mv - .050mv) to regain initial prime stability.

My CPU's are rock solid stable now, and are not showing any other signs
of further degradation, I even had the vcore on one up close to 1.5v for
some suicide runs, and still did not hurt it

Read through my thread here:
http://www.xtremesystems.org/forums/...179965&page=13
04-16-2008, 10:03 AM
Krzychu

Hi there,
Anyone got experience / know something about e8400 batch 807?
Thanks!
04-16-2008, 10:17 AM
funkflix

If you still can get one, do it now! Best week for E8400. All cpus i saw until right now will do a min. of 4200MHz stable with less then 1.4V! :)

I recieved a Q807A269 today. Just a first boot/quick test, error after about 12 minutes, but this one has potential! :D

http://www.abload.de/img/prime_4500mhzpie.jpg
04-16-2008, 10:33 AM
Krzychu

Quote:

Originally Posted by funkflix

If you still can get one, do it now! Best week for E8400. All cpus i saw until right now will do a min. of 4200MHz stable with less then 1.4V! :)

I recieved a Q807A269 today. Just a first boot/quick test, error after about 12 minutes, but this one has potential! :D

Thanks! :) I'll buy it tomorrow n hope to get better results than on my crappy e8200 (4G @ 1,42V)
04-16-2008, 11:18 AM
Simsons2

2 Attachment(s)

Got my E8400 yesterday.
Batch FPO# Q807A261. @ 4,35 ghz v1.38 its Orthos stable ~2 hours.
Vid = 1.0875 :eek: :D
Error After 13 mins @ 4,45 ghz and v1.5 real ( max temp 100*).
All is under Air (Cpu under Termalright Big Typ)
04-16-2008, 11:26 AM
kadir_slayer

results of my brand new E8400 Q802A570
VID: 1.0375

EARLY RESULTS:

POSITIVES: Seems stable at 1.216v 3825mhz
and 1.296 4050mhz

NEGATIVES: There is 18 C difference between cores at idle and the temp goes to wild as ı rise the core voltage..

at 1.296 load 4.05mhz the cores reach 90s and cpu to 76.. It rises so much with smal core voltage increases...

ı am going to crazy with these stupid e8400 cpus. either they are bad mhz performers or the temperatures are weird. or ı just god really bad luck...

please comment
04-16-2008, 11:27 AM
Simsons2

Mine E8400
Core 1 temp = 58*
Core 2 temp = 49*
But under load temps are almost same on cores. (+/- 3 degrees)
04-16-2008, 11:29 AM
jaredpace

Quote:

Originally Posted by Simsons2

Got my E8400 yesterday.
Batch FPO# Q807A261. @ 4,35 ghz v1.38 its Orthos stable ~2 hours.
Vid = 1.0875 :eek: :D
Error After 13 mins @ 4,45 ghz and v1.5 real ( max temp 100*).
All is under Air (Cpu under Termalright Big Typ)

awesome!:up:

i primed at 4500mhz, but failed after 10 minutes. Never gave it another shot after that, and just ran at 4.2 24/7 on ultra-120.
04-16-2008, 11:32 AM
Simsons2

Quote:

Originally Posted by jaredpace

awesome!:up:

i primed at 4500mhz, but failed after 10 minutes. Never gave it another shot after that, and just ran at 4.2 24/7 on ultra-120.

Your cpu is nice as well :up: , i got error after 1 min priming @ 4,5 ghz. Tomorrow shall try bigger vPLL / Vcore.
04-16-2008, 11:47 AM
TEDY

new batches q80x roxors.
04-16-2008, 11:47 AM
jaredpace

2 Attachment(s)

Quote:

Originally Posted by Simsons2

Your cpu is nice as well :up: , i got error after 1 min priming @ 4,5 ghz. Tomorrow shall try bigger vPLL / Vcore.

similar to your sig, i also had a 8800gt (from bfg) i ran at 734/1890/1920.

How in the hell did you get over 2000 on your shader? NICE!:up:

edit: trying prime at 4500:
04-16-2008, 11:53 AM
Simsons2

Quote:

Originally Posted by jaredpace

similar to your sig, i also had a 8800gt (from bfg) i ran at 734/1890/1920.

How in the hell did you get over 2000 on your shader? NICE!:up:

Its memory , but going for vmod soon :) My friend got 8800GTS 512mb on LN2 = 3000 shader :)
04-16-2008, 11:57 AM
zlojack

Quote:

Originally Posted by TEDY

new batches q80x roxors.

My new one hasn't been great so far...

Needs 1.38v for 8x500.

I'm still testing. I will post the full batch number later.
04-16-2008, 12:14 PM
TEDY

zlojack Q807/809 heard they're great.
04-16-2008, 12:22 PM
zlojack

Quote:

Originally Posted by TEDY

zlojack Q807/809 heard they're great.

I'll have to check which mine is... I don't think it's one of those.

Maybe Q803A or something...
04-16-2008, 12:25 PM
Jupiler

Quote:

Originally Posted by TEDY

zlojack Q807/809 heard they're great.

Q808xxx seems to be crap.
What about a Q809A009? seems new and haven't heard from it yet.
04-16-2008, 03:13 PM
Hughyhunter

Quote:

Originally Posted by CrazyNutz

Ok, It's not degrading the 45nm cpus just need a small bump in vcore
after a few weeks of burn-in, to regain stability.

Agreed... I had to bump up about .015v for mine. Probably even more. I did a 1.6v suicide run too! These buggers rock!

Quote:

Originally Posted by kadir_slayer

results of my brand new E8400 Q802A570
VID: 1.0375
at 1.296 load 4.05mhz the cores reach 90s and cpu to 76.. It rises so much with smal core voltage increases...
ı am going to crazy with these stupid e8400 cpus. either they are bad mhz performers or the temperatures are weird. or ı just got really bad luck...
please comment

They have temp sensor problems. What does it idle at with stock settings?

Quote:

Originally Posted by zlojack

My new one hasn't been great so far...

Needs 1.38v for 8x500.

I'm still testing. I will post the full batch number later.

This is great IMO! Dont be fooled by all these people that are 1.2v at 4+ Ghz. I have a good batch IMO and need 1.38v for 450mhz X 9multi. :up:
04-16-2008, 06:35 PM
jaredpace

500 x 9 with 1.424v Load.
04-16-2008, 06:42 PM
zlojack

Quote:

Originally Posted by jaredpace

500 x 9 with 1.424v Load.

WOW!!!! Congrats on a sweet chip!

Mine is Q802A489

VID is 1.112 :down:

Stable so far at 8x500 1.38v load

I think this will go into my brother's rig at a slightly lower clock and he can keep it for the next 3 years...
04-16-2008, 06:43 PM
ThatGuy16

I guess I'll post here.

Can bad ram cause your screen to look completely artifacted? my video cards seem stable. but this has happened a few times, most being when i try to run 3dmark, the computer doesn't freeze but everything looks artifacted.

All my games run fine :hm:

I'm going to snatch a picture of it next time it does it.

EDIT: this happens without any load on the graphic cards, so its not video related..
04-16-2008, 07:15 PM
Big Lar

Quote:

Originally Posted by ThatGuy16

I guess I'll post here.

Can bad ram cause your screen to look completely artifacted? my video cards seem stable. but this has happened a few times, most being when i try to run 3dmark, the computer doesn't freeze but everything looks artifacted.

All my games run fine :hm:

I'm going to snatch a picture of it next time it does it.

EDIT: this happens without any load on the graphic cards, so its not video related..

What drivers are you using for the vid? It actually is possible for it to be the vid card, as with ATI, at some times, the card runs 2d at 3d speeds. Go figure.

Larry
04-16-2008, 07:22 PM
ThatGuy16

That might be it, i just installed the 8.4 cats, I'll see if i have the problem again.

I should be getting new ram pretty soon, this stuff i have now is holding back my OC. With new ram, can't wait to see what i can bench :up:
04-16-2008, 09:09 PM
kadir_slayer

Quote:

Originally Posted by Hughyhunter

Agreed... I had to bump up about .015v for mine. Probably even more. I did a 1.6v suicide run too! These buggers rock!

They have temp sensor problems. What does it idle at with stock settings?

This is great IMO! Dont be fooled by all these people that are 1.2v at 4+ Ghz. I have a good batch IMO and need 1.38v for 450mhz X 9multi. :up:

it idles: 39-59 at stock settings. it seems that second core is stuck at 59. it never goes below 59

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