**Official e8400/e8500 Retail OC Thread

[icywater]

It's bizarre how these chips differ so much with volts and temps. Icywater that's great 5 hours small fft. It's getting hot man! But I'm like you, more concerned with voltage on this chip.

Can I ask what is your FPO / Board / NBvolts / Pll ?

i am also worry about the temp. for some reason my chip run hot even with 1.20 volt, it is like 45 degree C idle.

You see i run this chip in an ancient board P5B-D with 1219 bios (hated the 1226 bios)/ FPO Q745A551/ set to 1.55v in bios = 1.59v multimeter reading.

[Grnfinger]

Hey Grnfinger,

No 4.5 stable but I have been there with 1.44vcore to creep around. I'm doing same as you now, finally Prime and Occt stable at 4.2ghz vcore = 1.43 - High!! But I have yet to back it off or fine tune.

What about a table or a template with voltages etc., so we can all compare results?

There's a thread doing just that at ocxtreme which might interest you -

http://www.ocxtreme.org/forumenus/showthread.php?t=2453

What are your voltages for 4.3 stable? What stability test method did you use?

I use prime95 small ffts to get the cpu stable then a combination of prime blend test and OCCT to get my ram running smooth.
For 4.3GHz I need 1.36V, hope to have headroom for 4.5GHz
Temps are great at 28-30c idle and 49c load compared to the quad
The Maximus thread has a settings template to share/compare perhaps a template for this would prove helpful for all

[lowfat]

up to 2 hours stable so far.


Temps are very nice I must say to boot.

[Grnfinger]

my bad n/m

[GOESA]

My temps are also very good, but its lots of volt, can bench 32m at 4400mhz @ 1.55v set in bios on air.

/Grau

[icecpu]

Here is my , with 55C load should I pump more voltage to go beyond 4ghz for 24/7 usage ??

[CERO]

worth a shot eh?

[Retrolock]

i am also worry about the temp. for some reason my chip run hot even with 1.20 volt, it is like 45 degree C idle.

You see i run this chip in an ancient board P5B-D with 1219 bios (hated the 1226 bios)/ FPO Q745A551/ set to 1.55v in bios = 1.59v multimeter reading.

the bios 1219 has support for the wolfdale? Im running 1226 atm

[lowfat]

My temps are also very good, but its lots of volt, can bench 32m at 4400mhz @ 1.55v set in bios on air.

/Grau

you don't think 1.55V is way too much for a 45nm CPU?

[icywater]

the bios 1219 has support for the wolfdale? Im running 1226 atm

yeah it works, only doesn't have the 0.5 multi, i think any bios from 1212 and above can run wolfdale

[avrionis]

Got This today http://valid.x86-secret.com/show_oc.php?id=303613

running with windows 2003 server and no mods.

What are some of your Bios settings?

[BlueAqua]

I posted these in the DFI P35 thread but I don't want you guys to miss them.

Had some more fun tonight, didn't break any records, need better cooling for that.


Q745A372
Max FSB, boot from bios.


Nice and stable 595Mhz FSB.


Max Mhz.


Setup:

[GOESA]

you don't think 1.55V is way too much for a 45nm CPU?

1.55v is way to much, just for testing, I prime at 4050mh <- 1.45v

/Grau

[RedBull78]

I'm very NEW when comes to overclocking on an Intel platform but how important is it to raise the voltage on the NB? Mine is at 1.25v(I THINK)

[basco]

hi all !
can someone confirm this:
on p5k3dx bios 1001 only with 45nm chips can&#180;t disable C1E ?

thanks for tipps!

[eva2000]

E8500 Q740A493T

E8500 @5282Mhz at 1.704v idle / 1.696v load





Max 1M @5104Mhz at 1.704v idle / 1.696v load



Max 32M @5033Mhz at 1.704v idle / 1.696v load

[cadaveca]

Hey Eva..do you know what the "T" is for?

I got L740A525T, still testing, but currently @ 4275mhz @ 1.425.

[Retro]

Hey Eva..do you know what the "T" is for?

I got L740A525T, still testing, but currently @ 4275mhz @ 1.425.

Did you buy it in Canada, eg.: at NCIX?
My E8400 also has the "T", it's a Q740A555T, purchased at NCIX.
I haven't seen the "T" on the batch codes posted from the U.S., Europe, Asia, Australia, etc. so I also wondered about that

[cadaveca]

Picked it up locally, not NCIX. Their shipping department sucks since new years...I won't order from them until after the end of Feb.

[eva2000]

no idea what the T is.. all Aussie batches have it too

[Retro]

Picked it up locally, NCIX. Their shipping department sucks since new years...I won't order from them until after the end of Feb.

Heh! Xmas and Boxing Day sale backlog. I had to wait a few extra days back in early Jan. for my orders but their shipping seems to be back to normal now. They sent my E8400 in one day, very fast. Except the Purolator truck had mechanical problems so it was delayed a few hours


eva2000: Good to see it's also on Aussie batches, your results give me a lot to strive for

So, the letter "T" is on Canadian and Australian-shipped Intel 8000 series processors. Any other reports of this mysterious letter "T" on the batch codes

[Grnfinger]

I have "T" in my FPO as well

Q740A553T

I did not buy at NCIX and never would
so far it is an excellent chip

478x9 @1.368volts 15 hours prime stable
testing 500x9 @1.42volts

[cstkl1]

Q746A332

[Retro]

I have "T" in my FPO as well

Q740A553T

I did not buy at NCIX and never would
so far it is an excellent chip

478x9 @1.368volts 15 hours prime stable
testing 500x9 @1.42volts

Thanks, great chip!
Saw a letter "T" on lowfat's batch code as well, again, it seems to be on all Canuck and Aussie chips

[Supertim0r]

I have 2 E8400
Q740A473T
Q740A553T

I don't know if I'm doing something wreong but they both sux
4.25ghz need 1.488v
4.0ghz need 1.36v

Tried the on 2 P5K Premium (1 old "dead now" and a brand new one)

maybe i'm missing something