**Official e8400/e8500 Retail OC Thread

[georgesod]

q807a510 watercooling

[KingOfToasty]

Very well then. Here's a pic after passing 1 hour orthos test


and heres another just after passing a 1 hr OCCT test

[Mumid]

Very well then. Here's a pic after passing 1 hour orthos test

Not a bad chip you got there. Dont forget to post your full batch number if you want to be added to the database.

[heikis]

E8400 Q813A518 @ 4GHz

under load 1,192V according to cpuz, at idle ~1,216V
http://i273.photobucket.com/albums/j...000mhz_15h.gif

will try to do 4050MHz 10h stable today at the same voltage

[Arbitr]

Increase to 4.0+ please and keep us (me) informed

[KingOfToasty]

Not a bad chip you got there. Dont forget to post your full batch number if you want to be added to the database.

Intel E8400 Batch Q815A418

I was considering going to 4200, but for some reason whenever I take the Vcore above 1.28 the board won't power on. Once I figure that out I might go higher on the OC

[C-N]

Intel E8400 Batch Q815A418

I was considering going to 4200, but for some reason whenever I take the Vcore above 1.28 the board won't power on. Once I figure that out I might go higher on the OC

Use the "CPU VID Special Add" to increase Vcore.

CN

[sofarfrome]

Intel E8400 Batch Q815A418

I was considering going to 4200, but for some reason whenever I take the Vcore above 1.28 the board won't power on. Once I figure that out I might go higher on the OC

Try using vid special add to raise vcore. That is what I have to do with my DFI UT LP P35. I can't go above 1.25vcore and have it power on.

EDIT: oops!!! C-N beat me to it.

[mskvorc1]

Is it OK to run E8500 @ 4,037 GHz @ 1.376V (Load), 1.38975V (BIOS) for 24/7. I heard everything under 1.4V is OK. My computer literally works 24/7...

[zfactor]

well mine is on its way back to intel.. hopefully ill get something better in return ... report back soon

[HDCHOPPER]

VERY nice heikis thats gotta be 1 of the best

[heikis]

E8400 Q813A518 @ 4GHz

under load 1,192V according to cpuz, at idle ~1,216V
http://i273.photobucket.com/albums/j...000mhz_15h.gif

will try to do 4050MHz 10h stable today at the same voltage

well it failed at 4050mhz. i raised the voltage one step and then it was 9h stable until error i will leave it on orthos overnight with some extra voltage. updates tomorrow if lucky

[Pisklink]

Could someone please tell me what the maximum allowed temperature and voltage is for an E8400? I tried find it on the Intel site and searched the forum but no succes. Thx in advance.

[AriciU]

1.45v, 1.45v VTT (you don't want to go over 1.4v on this though), ~100C.

[zlojack]

According to Unclewebb's tests, thermal throttling was kicking in around 93-94C

[unclewebb]

i43 has been doing some research into thermal throttling on his 45nm Quad. Very similar results to my Q6600 and E8400. Thermal throttling usually begins at about 93C but each core is unique.



In this pic, core0 has just started to thermal throttle while the rest of the cores are all still OK. Prime continued to run fine.

If you're overclocking the smart thing to do is to run these as cool as possible. When overclocking, Prime stability increases the cooler you can run them. I find a maximum of 60C is much better than 90C when over 4000 MHz on my E8400. You'll lose stability long before you'll hurt one though so as long as you're stable there isn't any need to worry about temps.

There have been a lot of features added to RealTemp in the last month so it would be a good idea for anyone using 2.60 or previous versions to upgrade to the latest beta version.
http://www.fileden.com/files/2008/3/...alTempBeta.zip

Download, unzip and copy the new RealTemp.exe into your present RealTemp folder.

[C-N]

Could someone please tell me what the maximum allowed temperature and voltage is for an E8400? I tried find it on the Intel site and searched the forum but no succes. Thx in advance.

http://processorfinder.intel.com/det...px?sSpec=SLAPL

CN

[KingOfToasty]

Good news for me. I thought that my E8400 was running at 68 under load. Turns out that OCCT is just reading the temps wrong. According to a IR thermometer I "borrowed" from work, my temps are actually closer to 58 under load. With that in mind and the VID special add trick from earlier in this thread, I think i'm good to go for a higher OC than 4000 MHz. Will keep posted

[dengyong]

My E8500 Q814A081 on a 680i-A2 @ 4ghz 1.30v.....temps are 10c lower with realtemp.

[Copenhagen69]

how are yall getting your systems bootable with 1.3v core and lower? .... i cant even get it to boot anything at 4GHz with anything less than like 1.36 ... and yet i see like 1.2 and all sorts of crazy low v cores ....


@C-N
when it says "Thermal Specification: 72.4°C" is that the max temp you can run at and be safe? or what ...

[Leeghoofd]

how are yall getting your systems bootable with 1.3v core and lower? .... i cant even get it to boot anything at 4GHz with anything less than like 1.36 ... and yet i see like 1.2 and all sorts of crazy low v cores ....


@C-N
when it says "Thermal Specification: 72.4°C" is that the max temp you can run at and be safe? or what ...

ANOTHER CPU batch MIGHT DO THE TRICK FOR YOU... you can be lucky and have a minus 1.3 volts from the start or hunt down one....

[C-N]

@C-N
when it says "Thermal Specification: 72.4°C" is that the max temp you can run at and be safe? or what ...

It's the max Intel want you to run I presume to ensure the CPU will last forever.

I have a 45nm that will prime quite happy at 90 ~ 100oC so 72oC is by no means the max they will run/prime although I don’t expect it would run for too long at 100oC.

The annoying thing is we are really all just guessing at the temps our CPU's are running at as just about every monitoring app tells it different.

CN

[Pisklink]

@ AriciU

Thanks for the info. But what does VTT actually mean? Is that de voltage for thermal throttling or what?

@ C-N

Thanks man, that was the page I was looking for on the intel site but couldn't find it anymore. Even after typing some search string on their website. Thanks anyway.

[Kilyin]

@ AriciU

Thanks for the info. But what does VTT actually mean?

FSB termination voltage.

[mr.tie]

E8400
DFI X48 DK TR2S
Koolance exos AL
Corsair ddr2 800 C4