**Official e8400/e8500 Retail OC Thread

[Zeus]

Got mine today.

E8400 SLAPL FPO# Q748A102 pack date 01/04/2008

It's not one of the best, needs 1.36V for 4Ghz orthos stable but i reached my goal of sub 10 seconds:



Unfortunately it took a lot of voltage, above 1.6V didn't help much though.

My cpu is on watercooling but gets even warmer than my E6600 B2.

[SIOUX]

I just want people to know that i have been running an E8400ES chip for 4 months now. And prime would fail this chip at 4ghz 1.45v after 11 minutes. no matter what voltage was set, it was just not stable at 4ghz Prime. BUT...i can play all newer game for a hole day without a crash at 4ghz 1.38v, wich would fail prime instantly. Actely i never had a crash at 4 ghz 1.38v no matter what i did.

So i think we must look into this. i think i remember that this happend with some AMD chips in the past??anybody remember that? it would also fail prime, but be rock stable for 24/7 use??

Also i see these new E8400 retails doing 4700mhz on air, and 5ghz on Vapo LS. now my ES would only go to 4200mhz stable, but it did the same as newer chips on VAPO (about 5ghz)


I also got a retail today. This schip runs so hot. 70c on both cores at only 1.35v on WATER reseated the cooler 3 times...no luck

[CERO]

Got mine today.

E8400 SLAPL FPO# Q748A102 pack date 01/04/2008

It's not one of the best, needs 1.36V for 4Ghz orthos stable but i reached my goal of sub 10 seconds:

Judging from other results( altho I havent seen any 8 hours+ prime95 results so far ) this isnt idd a satisfying result. I will have mine 2morrow with exact same PFO....

[Praz]

Unfortunately I don't believe there is no one benchmark that will show stability 100%. I saw the same thing on the ICFX3200. Could run any stress test program there was with 3dMark looping at the same time for hours on end. But Prime would fail in under 3 hours.

I think the days of Prime stability ended quite a while ago. Not only is it no longer the definitive test of stability any longer but its extremely hard on the board and components to constantly be hammered like that.

[Plaicd]

Got a E8400 today purchased from zzf.
Core temp shows-vid=1.1000v-TjMax 105c
Box is marked,s-spec,SLAPL,fpo/batch-Q746A381
Pack date-01/04/08

Letting it prime at stock for now to let the tm paste settle in.
Will oc it later.

[AriciU]

I just want people to know that i have been running an E8400ES chip for 4 months now. And prime would fail this chip at 4ghz 1.45v after 11 minutes. no matter what voltage was set, it was just not stable at 4ghz Prime. BUT...i can play all newer game for a hole day without a crash at 4ghz 1.38v, wich would fail prime instantly. Actely i never had a crash at 4 ghz 1.38v no matter what i did.

So i think we must look into this. i think i remember that this happend with some AMD chips in the past??anybody remember that? it would also fail prime, but be rock stable for 24/7 use??

Also i see these new E8400 retails doing 4700mhz on air, and 5ghz on Vapo LS. now my ES would only go to 4200mhz stable, but it did the same as newer chips on VAPO (about 5ghz)


I also got a retail today. This schip runs so hot. 70c on both cores at only 1.35v on WATER reseated the cooler 3 times...no luck

That's exactly what happened to me and my E6750. I could do anything at 3760Mhz at 1.57v. It would pass 1 hour of OCCT, run any game for hours without any glitches, compiled hundreds of programs, including the kernel (on my linux OS) and my max uptime was about 3 weeks or so. Prime/Orthos would fail after 40 minutes though. The hell with Prime/orthos as far as i'm concerned

[bonzo_catalin]

how stable was that?

If you mean Prime95 , Orthos or OCCT , i do not know , i never kept my cpu other than default with C1E enable for 24/7, and i have a few ( E6600ES , E6600 , E2160 , E2140 , E6850 ) . I go higher as i can for SPI 1MB and 3DMarks .

[sambir]

Well i got my e8400 and i will post some results but i cannot boot at 9x500 not even 6x500 it hangs at ram check i have the maximus formula. My ram runs fine at 1066 5-5-5-15 but i cant boot at 1000mhz ram. I know for sure it has to do with the divider or some sort. Maybe transaction or static read control. Anyone have an idea? Ooh and 1 core is hotter then the other when stressed they are same around 50 degrees

[doom_st]

Q740A519
pack date 01/04/08
vid 1.05
cooling custom phase

24/7


Spi 1m

[mrcape]

Doom_St yes! That's what I like to see man. Now to open mine up and check it out.

[Forsaken1]

Off to a decent start?Or maybe the end .

Q745A372
Vid:1.0375
12/20/07
Water cooled

[AriciU]

These 745 batches are really kicking ass it seems. You could squeeze more for sure @ 1.55-1.65v (if you got the heart for it ). Too bad my E8500 is probably gonna be a Q740

[barzi]

Hope my e8400, that comes friday, is 745 .
Which are the better batches(beside 745)? I get two e8400, and i may choose the best one, but before i actually test them

[Zeus]

Hope my e8400, that comes friday, is 745 .
Which are the better batches(beside 745)? I get two e8400, and i may choose the best one, but before i actually test them

I bet you're gonna get a 0748 like mine.

[mrcape]

I got Q748A115

Will see what it does in a few hours...

[Sniper]

Just an hour or so, but still going:

Q745A533 watercooling PA120.3, Fuzion, DCC.

[bonzo_catalin]

It's summer in Norway ? . A little bit hot , don't you think ?

[Battle_Rattle]

I am still learning the ins and outs of my CPU here.
it OC's insanely, but getting stable is the hard part so far.
these are very jittery little processors.
alittle voltage off, and you will be unstable. yet they boot at almost any speed you set them at.

Kunaak... do some "user stressing" and see if you can corroborate what Sioux is talking about below... Interesting observations from both of you.

...And prime would fail this chip at 4ghz 1.45v after 11 minutes. no matter what voltage was set, it was just not stable at 4ghz Prime. BUT...i can play all newer game for a hole day without a crash at 4ghz 1.38v, wich would fail prime instantly. Actely i never had a crash at 4 ghz 1.38v no matter what i did.

So i think we must look into this. i think i remember that this happend with some AMD chips in the past??anybody remember that? it would also fail prime, but be rock stable for 24/7 use??

Also i see these new E8400 retails doing 4700mhz on air, and 5ghz on Vapo LS. now my ES would only go to 4200mhz stable, but it did the same as newer chips on VAPO (about 5ghz)

Sioux... I can affirm that multi instances of prime95 would bork my e6400 in a heart beat, but Prime 95_25.3 (worker threads imbedded) and occt would run all day.

I'm being an optimist here... Maybe the programs are the problem? Doesnt seem to make sense... as it stands though, usability trumps priming


Watching intently...


Danmoody.... take 20 minutes and learn Excel .... lol

[Sniper]

It's summer in Norway ? . A little bit hot , don't you think ?

Ambient is about 23.

[darcon]

Anyone with a DS3R tested one of these yet?

I'm thinking about picking up an E8400 and 2 more gigs of RAM...will having 4x1GB hinder my OC ability?

[davemelb]

Dave could you please give some more info about your 748A cpu regarding clocks-volts required (4ghz and up)? I need to choose between 2 of them...
thanks

Hi mate,

Going by memory, the Q744A needed less voltage than Q748A. But Q748A hit higher FSB and was easier to overclock on P5B-D motherboard.

Had very limited time with them, so I cannot give you anymore useful information than that.

I hope you get a good one.

[dccmadams]

just fired mine up tonight...almost 2 hrs priming so far...i had to bump the vcore up to 1.29 instead of 1.28 in screen shot..air cooled....50-56 load temps

[=[PULSAR]=]

what air cooling setup?

[icywater]

here is my

[Legion455]

Noob question, .. but, which is better a "retail" E8400/E8500 or "OEM"?

Also, ... any preference for which chip E8400 / E8500 s the better choice? I would think teh E8400 because of price.

thanks