**Official e8400/e8500 Retail OC Thread

[gundamit]

Picked up a Xeon e3110 from Buy.com before they sold out. Looks like all of them were Q746A534 according to Reefa_Madness. Its slightly better than my e8400 Q746A510 in that it takes less voltage to get to the same place. Both run hot but the Xeon is slighty hotter. Swapped out my Kingwin/Xigmatek HPDT cooler for a GeminII with bigger CFM fan.

Pic in preview in deference to TEDY and any members who are low bandwidth or pay metered rate.



3DMark06 fun with a vanilla 8800GT

[kitfit1]

@mrcape. If you are using cmos reloaded to load your clocks, did you check to make shure that your "Clock setting Fine Delay" settings are the same as they were when you ran 9hrs stable. I have noticed that when i use cmos reloaded, the fine delay settings change from one load to another. If they are different, i also get Orthos failing very fast. But if i load from "cmos reloaded", shut the mobo down after the bios is saved, discharge the mobo then boot up again, the fine delay settings are then the right ones and it sails through Orthos with no problem. I would be prepared to bet that a large number of the "cpu degregation's" we are seeing, are actually due to the wrong "fine delay" settings.

[TEDY]

i don't care i have flatrate 10/10 mbit/s but it's anonying to see those big pics :P

[mrcape]

@mrcape. If you are using cmos reloaded to load your clocks, did you check to make shure that your "Clock setting Fine Delay" settings are the same as they were when you ran 9hrs stable. I have noticed that when i use cmos reloaded, the fine delay settings change from one load to another. If they are different, i also get Orthos failing very fast. But if i load from "cmos reloaded", shut the mobo down after the bios is saved, discharge the mobo then boot up again, the fine delay settings are then the right ones and it sails through Orthos with no problem. I would be prepared to bet that a large number of the "cpu degregation's" we are seeing, are actually due to the wrong "fine delay" settings.

Hmm that's interesting and I'd love to explore that possibility more. You're my hero if you figure this out and I can apply a fix so that I can get it back to lower v. Not sure about it in my case as I had fine delay always on auto before and after the symptoms. Some of the settings I retested with came from cmos reloaded and some were manually entered.

I did however try about 40 - 50 tests before and after clearing cmos, re-flashing, a fresh windows install and fresh ram.

Also I never ran 9hrs, max of 2hrs for me.

[Mungri]

A little off topic, but man am I sooooo glad I bought my E8400 at the start of feb!

I paid £129 for it and was lucky enough to order a day before stock came in and got it two days later!

Look at the prices now:

http://www.scan.co.uk/Products/Produ...oductID=736334

http://www.overclockers.co.uk/showpr...odid=CP-192-IN

And I got a good core, 4050 mhz on 1.3v, 4275 mhz on 1.35v, but my ram isnt 24/7 stable at 475 Mhz fsb.

I'm going to test 4100 mhz @ 1.3v now.

[kitfit1]

Hmm that's interesting and I'd love to explore that possibility more. You're my hero if you figure this out and I can apply a fix so that I can get it back to lower v. Not sure about it in my case as I had fine delay always on auto before and after the symptoms. Some of the settings I retested with came from cmos reloaded and some were manually entered.

I did however try about 40 - 50 tests before and after clearing cmos, re-flashing, a fresh windows install and fresh ram.

Also I never ran 9hrs, max of 2hrs for me.

Because i have fine delay set to more aggressive, when i first ran my 4.6ghz clock i noted down the fine delay values. So of course i know that those work for me, with all the other settings at that clock. If you did'nt note down your values, even on auto, then finding them again could be difficult. One way, would be to set up the rest bios for your clock and then shut down as i said in my last post. Then run Orthos and see if it runs clear.

[mrcape]

I've tried shutting down with the settings applied, fine delay at auto always. The only thing I could do now I guess would be to tweak fine delay and see if I can go lower v orthos stable.

[rge]

I have run about 280 hours of prime + orthos + occt tests, in fact mine has run stress testing practically non-stop since I got it...first trying to sort out a reboot problem, which ended up being a software issue, and then trying loadline versus not, etc.

80% of that 280 hours (documented, actually probably much higher) is between 1.3625 volts (cpuz) up to 1.39 volts (cpuz). And still boot voltage at 4, and voltage for 4, 4.05, 4.1, 4.2 for 12hrs+ stability is exactly same. I have zero degradation after 1 month of near continuous stress testing at vcore 1.36 to 1.39.

I think stress testing simulates greater use. By way of example and not implying accuracy, 1 day of stress testing might equal 1 week of normal use.

If I saw degradation using two chips running stress testing with high FSB and ? high corresponding VTT, I might conclude that these chips dont like running with high FSB and/or high VTT, and that stress testing brings this fact to light quicker than 24/7 use. But I would not conclude, especially based on my chips (granted just one, but so is his just 2), that stress testing in itself is damaging, unless your settings are a problem to start out with, and stress testing just brings this to light quicker.

[Hughyhunter]

Are people linking memory to FSB? I have mine set to SLI enabled and to unlinked. So that I can run 800mhz on the memory. It says it's running 9:8 ratio in cpuz. What do you guys think? Also I am using about 1.375v cpu for 1800fsb. Is this kind of high compared to what you all are getting?

[mrcape]

still boot voltage at 4, and voltage for 4, 4.05, 4.1, 4.2 for 12hrs+ stability is exactly same. I have zero degradation after 1 month of near continuous stress testing at vcore 1.36 to 1.39.

Hi not sure if you were directing the comment about stress testing at me or not. I have no issues with stress testing, use it all the time.

Question about your testing -

Did you get a baseline to begin with to see how low V the chip could run at each clock before taking it over 1.3v at all?

[Motley]

Are people linking memory to FSB? I have mine set to SLI enabled and to unlinked. So that I can run 800mhz on the memory. It says it's running 9:8 ratio in cpuz. What do you guys think? Also I am using about 1.375v cpu for 1800fsb. Is this kind of high compared to what you all are getting?

I'm running non-SLI, and unlinked memory. Set to 1000MHz, with 5,5,5,15 2T

[TEDY]

guys use preview not full pics....has anyone have abit ip35-e and e8400...mobo undervolts like crazy....

bios 1.305v idle 1,152v load 1,16v cpu-z
bios 1.385v idle 1,264v load 1,232-1,240v cpu-z

grr, iritatting.....

flashed to latest beta16

bios 1.305v idle 1,272v load 1,248v cpu-z

showing much realistic now.....altho on stock cooler needs too much vcore? or am i doing something wrong? i see people here below 1.3v for 450x9 me 1.35-1.4v bios

[Metroid]

A little off topic, but man am I sooooo glad I bought my E8400 at the start of feb!

I paid £129 for it and was lucky enough to order a day before stock came in and got it two days later!

Look at the prices now:

http://www.scan.co.uk/Products/Produ...oductID=736334

http://www.overclockers.co.uk/showpr...odid=CP-192-IN

And I got a good core, 4050 mhz on 1.3v, 4275 mhz on 1.35v, but my ram isnt 24/7 stable at 475 Mhz fsb.

I'm going to test 4100 mhz @ 1.3v now.

lol, had to reply this one.

You got a good price although if you were a good shopper like me. You would have found it for £127 like I did, not forgetting they also have given me £10 voucher. So at the end if I buy it. I will be paying only £117. That is the best price in the whole UK. Well now I just need to decide if I will buy it.

So The E8400 for £117 or E8200 for £107 with a voucher discount.

Does somebody know if the reading temps affects also the E8200 or it is affecting only the E8400?

Metroid.

[C0ncrete]

Had this Q745A703 sitting in my P35 DS3P for a few weeks. Have not had the time to bench but I knew from reading here and other forums that the stepping was a beauty.

Nice to see my one followed suit.

Water gear is on the way back so will push it harder over the next few days/weeks.

Hot little bugger though!

[WiTcHkInG]

lol, had to reply this one.

You got a good price although if you were a good shopper like me. You would have found it for £127 like I did, not forgetting they also have given me £10 voucher. So at the end if I buy it. I will be paying only £117. That is the best price in the whole UK. Well now I just need to decide if I will buy it.

So The E8400 for £117 or E8200 for £107 with a voucher discount.

Does somebody know if the reading temps affects also the E8200 or it is affecting only the E8400?

Metroid.

Where from?

Several places still have them priced at £122~£130.

Just sold my second one on ebay so i might pick up an E8500

[Mungri]

Yea I should have like bought as many E8400's as I could at under £130 then put them all on ebay for £175 or something crazy!!!

But I love my E8400, I got a good one ^^

1.30v, 455 Fsb x9, 4095 Mhz, 910 Mhz ram @ 5-4-4-12 (Cas 4 is unstable over 900 Mhz), and 62 degrees.

Just increasing the fsb by 1 mhz to 456 for 4104 Mhz @ 1.30v, and the CPU crashes in under 2 minutes XD

I found my 1.3v maximum





My ram is terribad over 900 mhz at higher FSB's. I can get my CPU stable at 475 x 9 for 4275 Mhz with 1.35v, but the ram BSOD's within an hour or two and fails PI 32m and Orthos, regardless of voltage and timings. But at 333 - 350 Mhz FSB it is stable up to 1066 Mhz.

I'm going to make my sig now for my max stable OC :p

[mrcape]

Had this Q745A703 sitting in my P35 DS3P for a few weeks. Have not had the time to bench but I knew from reading here and other forums that the stepping was a beauty.

Nice to see my one followed suit.

That's great, the Q745 rox.

[Mungri]

Sig POWER!!!!

[C0ncrete]

That's great, the Q745 rox.

Thanks.

Have a feeling it can go 4gig with a little lower voltage.

Will be 37deg here today so no stressing this baby until it cools down later tonight

[mrcape]

Damn, 37 is hot! I bet it can do prime at 4ghz with 1.2v-1.22v

[rge]

Hi not sure if you were directing the comment about stress testing at me or not. I have no issues with stress testing, use it all the time.

Question about your testing -

Did you get a baseline to begin with to see how low V the chip could run at each clock before taking it over 1.3v at all?

Not you, but whoever was suggesting that your chips might be degraded from stress testing in itself.

After booting at default, I checked booting 4ghz at 1.25v and orthos crashes in 1-3 seconds, then many runs at 4ghz, orthos stops in 8-40 mins at 1.275v, and 2 long stable runs at 1.29. Then 2 long runs 4.05 stable at 1.3375, and orthos stops 10-20 mins at 1.325v. None of those points has changed. At every single voltage I list as stable, I have an orthos crash around 20 to 40 mins 2 notches below, and orthos crash around few to 10 hours at 1 notch below. If I degrade 1 notch I will be aware of it, but so far, not one notch at any stable setting even up to 4.1 and 4.2 ghz.

Now, at one notch below stable especially, I have seen massive variabilty, especially when running two identical orthos runs in succession. For example, (all runs at same settings in bios and in orthos) I run orthos at one notch below stable and it ran 8 hours first time. I immediately run it again, and it crashes in 17 minutes. So it degraded? The I run it again and it crashes in 3 hours. Then it idles for few hours while I am at work, and then run it again and it stops at 10 hours and 50 minutes, so it ?upgraded.

AT one notch less then stable, and sometimes two notches, I have seen massive variability, especially on quick reruns with no rest in between, but no degradation.

[mrcape]

RGE, that's good to hear that you haven't seen any major change. I really hope I can sort out a good reason for this other than damage but so far not yet.

I need an even seven extra notches consistently across all of the clocks I had recorded.

[Ymir]

Damn, 37 is hot! I bet it can do prime at 4ghz with 1.2v-1.22v

I wouldn't expect to keep that stable for long, actually.

@bhavv: Very nice for 1.3V--quite nice in general, really Looks as though you got a good chip. BTW, as you say cas @ ~4 gets unstable above 910 Mhz... what about cas @ ~5 and hitting around 1000 or 1066?

[flesheatinvirus]

Thats what I have seen as well, strange variability that could be causing some type of thermal breakdown yet at least with my chip has no major long term damage as I can still run my 24/7 speed of 4500 at 1.45v going on a month now and bench anything like the day I fired it up. Strange indeed..

[Ymir]

Thats what I have seen as well, strange variability that could be causing some type of thermal breakdown yet at least with my chip has no major long term damage as I can still run my 24/7 speed of 4500 at 1.45v going on a month now and bench anything like the day I fired it up. Strange indeed..

New gens should fix the fluctuation up, and we'll be seeing less chip individuality in all likelihood. Hopefully less issues in general, but who can say.