**Official e8400/e8500 Retail OC Thread

[fng77]

From those results, I'd say ram speed mean very little, if anything, in 3d06

I was quite supprised about how little the ram speed affected 3dmark06. But I´m sure that its a bigger difference between say 800 Mhz and 1200

[fng77]

There is a 50-50 chanse to get it right between yes and no,

not sufficient for me

[k0k0]

wich is the best motherboard to do 4Ghz ?? I had 8Gb OCZ Platinum XTC DDR2 8000, 8800 GTS 640Mb, and my old motherboard is a Abit IP35, is this a good motherboard or change the abit for asus ??

the cpu i want is a E8400 Q745/Q746, is the best week ??

[zoob]

Does anyone else have problems running SuperPi 32M in Vista x64? I can do all of the other ones - only 32M fails after 4-6 minutes, even at stock settings. I can also Prime95 for hours. :|

I saw this thread on OCForums: http://www.ocforums.com/showthread.php?t=543015

But also saw that many other people can run 32m in Vista... how odd

Maybe my chip really is better than I think it is since I switched over to SuperPi runs as a quick stability check before clocking higher.

[CrazyNutz]

FYI E8x00 degradation poll is up here:
http://www.xtremesystems.org/forums/...d.php?t=179965

[CrazyNutz]

Lap it. Mine needed 1.425 @ 4.0 Ghz. Now I'm running 4.1Ghz @ 1.39v orthos stable. Prolly shaped like a spoon.

What were/are your temps befor and after lapping?

[ROcHE]

Lap it. Mine needed 1.425 @ 4.0 Ghz. Now I'm running 4.1Ghz @ 1.39v orthos stable. Prolly shaped like a spoon.

Hmm.

Maybe.

[dnottis]

What were/are your temps befor and after lapping?

My sensor doesnt drop below 51, even though the bios shows 33. Core temp is always showing 65 loaded. Real temp shows 55 ish. Before I needed alot more voltage but the temps were identical. I dont think the sensor is calibrated / working right with mine as my q6600 would make my rad warm when priming. This doesnt even get it warm. So for temps I can't really say. For stability with less volts lapping made a huge diff.

[zoob]

Thanks. Finally got a winner of sorts!
More results from the same chip:

Even higher!



I can't get it stable at 500x9, but it was enough for Pi 4M and CPU-Z validation.
http://valid.x86-secret.com/show_oc.php?id=330430

[tranceaddict]

^^^

That has got to be one of the more impressive 45nm chips I have seen. Where did you get it from "zoob"? I'm from TO as well so if it is local maybe I can grab another one to play with my E8400 which only does 4.2Ghz @ 1.35V (15+ Prime stable).

[zoob]

From Intel

It is an RMA chip after my first E8500 randomly died.

[UnSeenSVK]

Hallo..i m looking on my box and there says

E8400

Q805A226 pack date 3.3.2008

does anybody have the same as my?...

[leffe]

Hallo..i m looking on my box and there says

E8400

Q805A226 pack date 3.3.2008

does anybody have the same as my?...

Yeah I had it, sucked ass though. Needed 1.40v for 4ghz and was barely even stable. Might be good for throwing at some duck or other waterbird.


Seriously, is not one time enough for asking?

Edit: Oh it seems to be a new code again, just dont spam too much. If anyone has them I'm sure they will report.

[kiwi]

4300Mhz 1.42V stable, Q746A485

[sofarfrome]

From Intel

It is an RMA chip after my first E8500 randomly died.

What is the batch code?

[UnSeenSVK]

Yeah I had it, sucked ass though. Needed 1.40v for 4ghz and was barely even stable. Might be good for throwing at some duck or other waterbird.


Seriously, is not one time enough for asking?

Edit: Oh it seems to be a new code again, just dont spam too much. If anyone has them I'm sure they will report.

sorry i did 3 times mistake in my post...

so whitch MB are you using_?...

i hope that my is not goona be like yours

i will see....i m ok with 4ghz ...but i m gonna buy water cooling so...a don t care about Voltage...but must be stable...

and what about temp?

[zoob]

What is the batch code?

Q740A479T



Woke up this morning and still hasn't failed Prime

[kiwi]

zoob, run new version occt custom test

Prime needs at least 12 hours in blend and large-fft modes each

[sofarfrome]

I have seen some good results from the chips that have the T at the end...that is a nice chip.

[CrazyNutz]

My sensor doesnt drop below 51, even though the bios shows 33. Core temp is always showing 65 loaded. Real temp shows 55 ish. Before I needed alot more voltage but the temps were identical. I dont think the sensor is calibrated / working right with mine as my q6600 would make my rad warm when priming. This doesnt even get it warm. So for temps I can't really say. For stability with less volts lapping made a huge diff.

Awesome thanks. I will be lapping my Q748A144 now, I think the IHS is
convex, it also runs a good +10c hotter than my Q747XXXX.

[Meaker]

Just recieved mine, will test mine when scan actually bother sending me my mobo replacement:

Pack date: 02/25/08
FPO #: Q748A401

[dnottis]

Just recieved mine, will test mine when scan actually bother sending me my mobo replacement:

Pack date: 02/25/08
FPO #: Q748A401

Here is my Q748A219 Pack 1/29/08

[Retro]

I have seen some good results from the chips that have the T at the end...that is a nice chip.

Another vote for the "T"

[jcniest5]

I have seen some good results from the chips that have the T at the end...that is a nice chip.

Never seen one. Is it a mysterious chip?

[cadaveca]

nope L740Axxx "T" 4.5ghz @ 1.5v seems good. I dunno spectacular, but I've hit 4690 bench stable @ 1.55v.