**Official e8400/e8500 Retail OC Thread

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06-06-2008, 02:04 PM
bonzo_catalin

Q807A253 anyone ?
06-06-2008, 02:28 PM
Jupiler

The Q807A241 / A269 and A276 have been proven to be great clockers, so the A253 like you have might perform as good.
Buy it and test it, I'd say.
06-07-2008, 12:21 AM
bonzo_catalin

It's here , also SS , but Commando it's on the way. Thx for your answer ;)

Hope to work better then my Q749 , 56xx on LN2 with 1,9x v .
06-08-2008, 03:43 AM
Mungri

My new maximum clock:

http://i118.photobucket.com/albums/o...vvv/4325-1.jpg

4325 Mhz, 1.4v in bios, temperature under maximum strain is 67-70 degrees.

Do you think this is safe for 24/7? I still have orthos going and will try and reach a couple of hours.
06-08-2008, 05:36 AM
giorgos th.

R410A instead of R507 in the SS and the cpu went straight up.....
http://www.imageshack.gr/files/6ttpj1oe79jv0v86m8um.jpg

max mhz with 1.68Vcore.
http://www.imageshack.gr/files/30krggkd9gqbri3xypy1.jpg
06-08-2008, 10:44 AM
DoObs

My hands are freezing, been overclocking with my window open here, Durban tonights air temps are 10 degrees. How wonderful is that.

So overclocking time with basically my window open and trying to superPI.

I did try for 5ghz, but i think watercooling not gonna cut it. Maybe ICE water, but definitely DICE.

Will have two loops going, two separate watercooling systems on the board, two for the Chipset and PWR chip and then my cpu and gfx card. See if that helps.

Anyway here are some pics.

.............................Hmmm my hands are thorning out

http://i161.photobucket.com/albums/t..._018/49ghz.jpg

http://i161.photobucket.com/albums/t...75sec47ghz.jpg

http://i161.photobucket.com/albums/t...ewFolder-2.jpg

http://i161.photobucket.com/albums/t...ture001-38.jpg

http://i161.photobucket.com/albums/t...ture002-37.jpg

http://i161.photobucket.com/albums/t...ture003-30.jpg

hehehe Will have some 3D benches soon
06-09-2008, 03:12 PM
Mungri

Wow!!!

To actually freeze your whole room and your poor hands just to overclock ...

Xtreme!!! :up:
06-09-2008, 03:31 PM
Alex-Ro

For the sake of the art!Well done :)
06-09-2008, 08:33 PM
Zifko

lol thats great stuff, nice try for 5ghz ;)
06-09-2008, 09:41 PM
DoObs

Lol thanks guys, yea im going to be trying for 5ghz, this whole week its going to be cold. Winter, gotta love it. I hope to at least use less volts to my North Bridge.

I find that the vtt doesnt help at all, all it does it make the overclock unstable. so i leave it at stock or just below 1.2v. I was able to run cas4 aswell which is great, having a hard time figuring out the right settings for high FSB. my ram i know can do cas4 at 1200mhz.

Would the GTL's help with a higher overclock. How would i set them at say 556FSB for 5004mhz overclock?
06-09-2008, 11:19 PM
Spitphire

This might have already been asked here, but how do some of you get up to 4 GHz on so low voltage??? I have to get up around 1.45 just to stay stable at 4 and anything above that I have to hit almost 1.5. I know every chip is different, but come on. What gives?
06-09-2008, 11:24 PM
Leeghoofd

Quote:

Originally Posted by Spitphire

This might have already been asked here, but how do some of you get up to 4 GHz on so low voltage??? I have to get up around 1.45 just to stay stable at 4 and anything above that I have to hit almost 1.5. I know every chip is different, but come on. What gives?

First up is ya mobo, yours is known for bad droop/drop (never had the EP35 but in everything I read it's about the same as the predecessor)... so if you opt first for a higher specced model (PWM's) than you will need for sure less voltage... second up is the batch ( plz look in my list to compare results) : there are golden, good, average and really bad CPU's out there... try to find your batch plz...

I have had 4 different E8400's and one E8500 now... it's all about testing, some or much luck involved and good setup in bios, mobo design and good cooling and ambients...
06-09-2008, 11:33 PM
Spitphire

Quote:

Originally Posted by Leeghoofd

First up is ya mobo, yours is known for bad droop/drop (never had the EP35 but in everything I read it's about the same as the predecessor)... so if you opt first for a higher specced model (PWM's) than you will need for sure less voltage... second up is the batch ( plz look in my list to compare results) : there are golden, good, average and really bad CPU's out there... try to find your batch plz...

I have had 4 different E8400's and one E8500 now... it's all about testing, some or much luck involved and good setup in bios, mobo design and good cooling and ambients...

Thanks for the info. Good stuff. I have noticed that when I select 1.45V its actually 1.44V according to CPU-Z. Would raising the FSB or NB voltage allow me to run a lower VCore?
06-10-2008, 01:03 AM
Bullet92

Quote:

Originally Posted by Spitphire

Thanks for the info. Good stuff. I have noticed that when I select 1.45V its actually 1.44V according to CPU-Z. Would raising the FSB or NB voltage allow me to run a lower VCore?

Don't trust CPU-Z for voltage. If you have DMM it'll be usefull. I don't think that your mobo doesn't droop more (or if you had luck like me and have 0 dro(o)p out of the box on my vanilla than it's ok).

For the second, I don't think so. NB Voltage allows you better memory stability (sometimes) and for low FSB (freq) you don't have to raising the FSB Voltage.
06-10-2008, 06:51 AM
zaone

Hello it seems like i`ve ended up with a not so overclock`able cpu, it seems that i can only get it stable at 4ghz with 1.41 voltage, the question i have is , is it safe for daily use gaming and all that or not? the temps hang around 56-60 degrees under strain. oh yea and it seems it`s default voltage is 1.225.
06-10-2008, 09:46 AM
Hor$eman

You will need a bios setting of 1.6v or higher to attain 4500 MHz. You will also need a very good cooling system, water preferably, or a very good heatsink/fan. Stock heatsink/fan is insufficient.

To get there, increase your voltage by 0.250v each time you have upped the CPU clock. If it is too low, it will:
1) Not load to the windows screen, add more
2) Not fully load to windows, add more
3) Load to windows, but bsod very quickly
4) load to windows, bsod when running a program
5) Load to windows, runs program, reduce volts in smallest increments until stability is decreased.

You will also have to control PLL and VTT settings if available on your MB.
Start with a PLL of 1.60v, and increase it very little.
Start with a VTT of 1.20v, and increase it slowly.
06-10-2008, 09:46 AM
prime81

Here's the highest I've gone thus far, it's reaching 100F here regularly now... so itll be a while before I push higher clocks. Running a Maximus "Rampage" Formula, with latest Rampage BIOS.

http://www.its-inev.com/downloads/pics/4500_superpi.JPG

Here's what I run daily 24/7 when not benching.
http://www.its-inev.com/downloads/pics/temps_e8500.JPG
http://www.its-inev.com/downloads/pics/500fsbperf.JPG
06-10-2008, 11:50 AM
NupSiHoVa

E8400 Q807A276 :p:

4GHz
http://www.abload.de/thumb/4000_276_1184mj7.jpg

4,2 Ghz
http://www.abload.de/thumb/4200_276_stable5jz.jpg

4,4GHz
http://www.abload.de/thumb/4400_276_stable49t.jpg

I'm still fighting to hit 4,5 Ghz stable

Heres my Rig:

DFI DK P35
2GB G.Skill GBHZ ( D9GMH) 1:1 with FSB
CPU cooled by NexXxos XP
06-10-2008, 12:44 PM
Leeghoofd

All results added to the list... we want more !!!

And Prime81 plz go lower on ya FSB Term voltage plz 1.5 is not healty for a 45nm CPU !
06-10-2008, 01:20 PM
NupSiHoVa

How do the results have to be posted?
06-10-2008, 01:30 PM
Darkatom

Quote:

Originally Posted by zaone

Hello it seems like i`ve ended up with a not so overclock`able cpu, it seems that i can only get it stable at 4ghz with 1.41 voltage, the question i have is , is it safe for daily use gaming and all that or not? the temps hang around 56-60 degrees under strain. oh yea and it seems it`s default voltage is 1.225.

Is that vcore 1.41 idle or load ?
06-10-2008, 01:52 PM
Leeghoofd

Quote:

Originally Posted by Darkatom

Is that vcore 1.41 idle or load ?

First ya CPU eg E8400 then batch nr eg Q807A243... and a screenie of some prime blend or small FFT action plz with a CPU-Z screen or Everest readout or sortlike to verify the CPU voltage...

And if not in ya signature the mobo (and bios) and cooling used...

result in the list :

E8200

Q740A621 4Ghz@1.21 Vcore user : Jupiler mobo: DFI Lanparty P35 TR2S watercooling

Good example on top of this page is KoasX report

List is up for grabs here : http://users.pandora.be/OAP/wolfdaleOClist.xls
06-10-2008, 03:30 PM
NupSiHoVa

E8400

Q807A276 4Ghz@1.184 Vcore user : NupSiHoVa mobo: DFI Lanparty DK P35 TR2S watercooling

4GHz
http://www.abload.de/thumb/4000_276_1184mj7.jpg

Q807A276 4,2Ghz@1.248 Vcore user : NupSiHoVa mobo: DFI Lanparty DK P35 TR2S watercooling

4,2 Ghz
http://www.abload.de/thumb/4200_276_stable5jz.jpg

Q807A276 4,4Ghz@1.344 Vcore user : NupSiHoVa mobo: DFI Lanparty DK P35 TR2S watercooling

4,4GHz
http://www.abload.de/thumb/4400_276_stable49t.jpg

All needed as proof should be provided in the screenshot ;) Dont get confused, my username "JHoVa" wasnt available her anymore....here its NupSiHoVa ;)
06-10-2008, 08:58 PM
prime81

Quote:

Originally Posted by Leeghoofd

All results added to the list... we want more !!!

And Prime81 plz go lower on ya FSB Term voltage plz 1.5 is not healty for a 45nm CPU !

First I've ever heard of that, it's on auto anyway ^
06-10-2008, 10:08 PM
monza1412

Quote:

Originally Posted by prime81

First I've ever heard of that, it's on auto anyway ^

You should adjust your motherboard voltages manually, Asus motherboards sometimes give way too much voltage when their values are set in AUTO.

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