**Official e8400/e8500 Retail OC Thread

**So3oL4Nu** · 07-09-2008, 03:36 AM

Originally Posted by Leeghoofd

Mmmm so3o4nu try to lower the vcore in small steps... if you can run 8 x 500 with the same Vcore setting then at 9 x 450 it would prolly needs a tiny bit less... and try small FFT's for CPU test... my rig is stable with small and Blend... but sometimes caps out at large FFT's... yet it is folding all the time, gamed upon , benched upon and it's rock stable there...

What PLL and FSB Term do you use ?

I tryed that before, i lowered the vcore in small stepts...only with those vcore's the sistem is stable ...anyway...the CPU seems to be not so good i wanna change with batch Q813A190...you don't answer me...it's this batch better ?

I have PLL and FSB Term on auto...i don't know so good that those settings do...now i run x8 / 500 / Vcore 1.47 / DDR 1000mhz 5-5-5-15 2.1 / , what PLL and FSB termination i need for those settings ?

**Leeghoofd** · 07-09-2008, 03:50 AM

On Xs there's noone recorded here with that batch... these are the only 813's listed

Q813A199 4Ghz 1.32 Vcore
Q813A499 4Ghz 1.28 Vcore
Q813A518 4.3Ghz 1.33 Vcore

Try PLL at 1.5 and FSB Term at 1.2... if not stable try PLL 1.6 and FSB Term 1.2, if not stable 1.6 and 1.3

**So3oL4Nu** · 07-09-2008, 04:36 AM

Originally Posted by Leeghoofd

On Xs there's noone recorded here with that batch... these are the only 813's listed

Q813A199 4Ghz 1.32 Vcore
Q813A499 4Ghz 1.28 Vcore
Q813A518 4.3Ghz 1.33 Vcore

Try PLL at 1.5 and FSB Term at 1.2... if not stable try PLL 1.6 and FSB Term 1.2, if not stable 1.6 and 1.3

I hope i have time to try those settings because tonight i buy the Q813A190...hope that this batch is better ...thanks a lot !

**mskvorc1** · 07-09-2008, 10:44 AM

Recently buyed EVGA nForce 750i FTW motherboard and E8400 (SLAPL MALAY Q815A451 - I think it's his batch). After installing and setting up I manged at 1.38125V in BIOS and 1.344V at load to get to 3.825 GHz (9x425 Mhz), memory linked at 5-5-5-15 at 2.1V (I've got OCZ XTC SLI Ready Memory 1066 MHz which runs at 5-5-5-15 at 2.1V on 1066 MHz). At 1.4V my load was only 1.36V, so decided to do pencil mod. At 1.4125V, my load was 1.400V. As I understand it's not good for 45 nm processors to go over 1.4V under load for 24/7 overclock, but still Prime95 failed after 40 mintues even with raising CPU FSB to 1.35V, and SPP voltage to 1.45V. My max temperatures were 60 C, but usually around 55-60 C. Why can't I get 4.0 GHz. Do I just have little less overclockable E8400?

Plese help, tried everything

**LagunaX** · 07-09-2008, 10:55 AM

Maybe mediocre e8400 but there are other things you didn't mention like locking the pci-e to 100, disabling eist and array spectrums, etc.

**mskvorc1** · 07-09-2008, 11:02 AM

Originally Posted by LagunaX

Maybe mediocre e8400 but there are other things you didn't mention like locking the pci-e to 100, disabling eist and array spectrums, etc.

Disabled everthing in BIOS, all slow down functions, CPU spread spectrum, PCI-E locked at 100 MHz... Also disabled Virtualization Technology and Execute Disable Bit although not so on the picture... My BIOS settings:

Code:

http://max-save.org/img.php?file=qh5051d.jpg

http://max-save.org/img.php?file=bewzsuj.jpg

http://max-save.org/img.php?file=d811emi.jpg

http://max-save.org/img.php?file=clea6b6.jpeg

**genec57** · 07-09-2008, 01:18 PM

My E8500 system has started blue screening. It is OCCT and small fft stable. It is as likely to crash at idle as under load. My Asus P5k deluxe has been working away for about a year now. I am thinking it is either that or a memory problem. The dominator chips are new and have not shown any errors. I did bump vdimm to 2.15 just for grins.
Love to hear any ideas before I start making expensive decisions. Sig is current.
Thanks

edit: Ran memtest - no errors

**Rickpatbrown** · 07-09-2008, 03:14 PM

So what's the consensus on applying a little bit a voltage to these suckers? It took a BIOS setting of 1.5175v on my Rampage Forumla to get this stable at 4.0Ghz. CPU-z says 1.48v. Do we have confirmation of early death due to these higher voltages? I think I'll leave it here and see if I can donate my chip to the name of science. I have a feeling it won't be a problem for the six months to a year that I keep a chip.

**shimmishim** · 07-09-2008, 04:03 PM

Anyone else get a Q816? I only saw one in the database from leeghofd but was wondering if anyone else has one!

**Mumid** · 07-09-2008, 04:10 PM

Originally Posted by Rickpatbrown

So what's the consensus on applying a little bit a voltage to these suckers? It took a BIOS setting of 1.5175v on my Rampage Forumla to get this stable at 4.0Ghz. CPU-z says 1.48v. Do we have confirmation of early death due to these higher voltages? I think I'll leave it here and see if I can donate my chip to the name of science. I have a feeling it won't be a problem for the six months to a year that I keep a chip.

Thats a pretty high voltage mate to be running 24/7! Not sure if many have died from running high volts but I would'nt be comfortable running mine that high... What kind of temps do you get?

Why dont you just ebay that one off and get another one? Theres some pretty good clockers around at the minute

**So3oL4Nu** · 07-09-2008, 04:56 PM

I bought a new CPU, batch Q813A190.

x9
445 FSB
PCI 100
Dram 2.1 890MHZ 4-4-4-12 @ 2.2 (Corsair XMS2 DHX 2x1GB)
Vcore 1.36 BIOS
NB 1.4
CPU PLL AUTO
FSB TERMINATION AUTO

It's that a good batch ?

...My temps are verry high...i put Zalman ZM-STG1 on the CPU, it need 1,2 week to work properly...my idle temp is about 60 ...thats bad...the old cpu stood @ 44 idle...it's that a hot batch ?

Cya all...

**nugzo** · 07-09-2008, 06:02 PM

Originally Posted by So3oL4Nu

I bought a new CPU, batch Q813A190.

x9
445 FSB
PCI 100
Dram 2.1 890MHZ 4-4-4-12 @ 2.2 (Corsair XMS2 DHX 2x1GB)
Vcore 1.36 BIOS
NB 1.4
CPU PLL AUTO
FSB TERMINATION AUTO

It's that a good batch ?

...My temps are verry high...i put Zalman ZM-STG1 on the CPU, it need 1,2 week to work properly...my idle temp is about 60 ...thats bad...the old cpu stood @ 44 idle...it's that a hot batch ?

Cya all...

Use real temp instead of core temp for the wolfdales.

**Leeghoofd** · 07-09-2008, 06:06 PM

Originally Posted by So3oL4Nu

I bought a new CPU, batch Q813A190.

x9
445 FSB
PCI 100
Dram 2.1 890MHZ 4-4-4-12 @ 2.2 (Corsair XMS2 DHX 2x1GB)
Vcore 1.36 BIOS
NB 1.4
CPU PLL AUTO
FSB TERMINATION AUTO

It's that a good batch ?

...My temps are verry high...i put Zalman ZM-STG1 on the CPU, it need 1,2 week to work properly...my idle temp is about 60 ...thats bad...the old cpu stood @ 44 idle...it's that a hot batch ?

Cya all...

Prolly a bad IHS mate , concave or convex like mine... that's 65°C idle that is bad... which cooler are you using ? and your mobo's power circuitry is horrible, this is 1.36Vcore in bios and it gives ya 1.23 idle ?

**Rickpatbrown** · 07-09-2008, 07:35 PM

My temps at 1.525v (BIOS) 1.48v CPU-z at load, 4.05Ghz are 57 degrees after about two hours Prime95.

Thats a pretty high voltage mate to be running 24/7! Not sure if many have died from running high volts but I would'nt be comfortable running mine that high... What kind of temps do you get?

Why dont you just ebay that one off and get another one? Theres some pretty good clockers around at the minute

I though about doing this earlier. I've never sold anything on eBay and was afraid that I wouldn't get a good price because of it. I would also feel obligated to tell the buyer exactly what I've done with it (1.5volts) and that would decrease what I could get for it. I thought about RMAing it to intel, but my conscience told me otherwise.

All in all, it just didn't seem worth the hassle. 4.5Ghz sounds frickin' nice though

**nugzo** · 07-09-2008, 08:16 PM

I just ordered another E8500 from the egg. Anybody picked one up in the past week or so? If so what Batch #

**mskvorc1** · 07-09-2008, 09:00 PM

Multimeter - how to measure vcore? I bought it, but don't know where to place red and black whire to measure real vcore under load? Plese help! Since I did pencil mod want to measure real voltage...

**Vatos_locos** · 07-09-2008, 09:04 PM

put the black prob on one of your psu black wires anyone and the red one on the chokes around the cpu area this should work

**Lu(ky** · 07-10-2008, 01:34 AM

Originally Posted by nugzo

I just ordered another E8500 from the egg. Anybody picked one up in the past week or so? If so what Batch #

I got one about 2 weeks ago and so far I can run at 4GHz stable at 1.20V with it. But I had problems with my raid -0- lost everything so I had to start over again..

I know I can get more because I was at 4.2GHz 1.25V, but memory problems kept me back. So I bought some G Skill memory and it was starting to look good again then I lost my raid then...Here a shot of my CPU from NEWEGG.

**Chri$ch** · 07-10-2008, 01:59 AM

@ leeghoofd

is this nothing for the list?

Originally Posted by Chri$ch

Intel E8400 Q807A276
4.0Ghz @ 1.20v VCore
CPU cooled with Zern PQ (water @ 27,3°C)
Asus P5Q-E P45

edit: 6h prime screen

**So3oL4Nu** · 07-10-2008, 02:11 AM

Originally Posted by nugzo

Use real temp instead of core temp for the wolfdales.

With Real temp i have 49 idle (cooler runing at low RPM)...i think that's better...right ?

...

**So3oL4Nu** · 07-10-2008, 02:20 AM

Originally Posted by Leeghoofd

Prolly a bad IHS mate , concave or convex like mine... that's 65°C idle that is bad... which cooler are you using ? and your mobo's power circuitry is horrible, this is 1.36Vcore in bios and it gives ya 1.23 idle ?

I don't understund what are you saying there...

...anyway...my mobo is not good ah

...tell me what mobo can i buy for the same money...
The friend for where i bought the CPU sad that this CPU needs 1.3 @ bios for 4GHZ...look again...the cpu needs 1.24 under load ...you sad that 1.24 is idle ?...WTF?

**Mumid** · 07-10-2008, 02:55 AM

Originally Posted by Rickpatbrown

My temps at 1.525v (BIOS) 1.48v CPU-z at load, 4.05Ghz are 57 degrees after about two hours Prime95.

I though about doing this earlier. I've never sold anything on eBay and was afraid that I wouldn't get a good price because of it. I would also feel obligated to tell the buyer exactly what I've done with it (1.5volts) and that would decrease what I could get for it. I thought about RMAing it to intel, but my conscience told me otherwise.

All in all, it just didn't seem worth the hassle. 4.5Ghz sounds frickin' nice though

Temps dont sound bad at all mate but you are still running an extremely high vcore. Have you tried tuning your other voltages so you can get your vcore down? 1.5 volts is incredibly high for 4ghz.

**mskvorc1** · 07-10-2008, 03:39 AM

Originally Posted by Vatos_locos

put the black prob on one of your psu black wires anyone and the red one on the chokes around the cpu area this should work

Chokes? What is chokes? Sorry if I don't understand, I'm from Croatia...

**e30Birdy** · 07-10-2008, 03:48 AM

Any thing on Q750A071 batch, i am having probs with this badboy, can run super pi at 480x9.5 but cant get this badboy stable anywhere except stock (testing with prime95 and occt), seen a lot of peoples overclocking and it makes me want to cry and think i got a bad chip

http://valid.x86-secret.com/show_oc.php?id=350950

**nickless** · 07-10-2008, 04:36 AM

Yesterday I've received my new E8500 Q807A253. I've played with this CPU only for two hours, but it looks this batch is good. I've tested for max. OC with min. Vcore and I've managed to get 4512 (9.5x475) with 1.36v under Vapochill XEII one hour Prime stable.

Compared to my old Q6600 in Crysis benchmark there is raising with 2-3 FPS.
But this is just the beginning of my test

When I have more results I'll post some pics about max. OC and bench results.

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