**Official e8400/e8500 Retail OC Thread

[laragirl83]

I got an E8200, FPO Q746A513, pack date 01/17/08

It does 8*500MHz @ 1.336V On air of course, max temp is 63 celsius under prime95 small fft's test!

[unclewebb]

My box says 1.225v max, or is that reffering to the CPU VTT?

On your Intel CPU box you will see the recommended CPU voltage for your chip. FSB Termination voltage is different and is set in the bios.

[WiTcHkInG]

Ive got a Q750A032 E8400 which seems very poor so far.
Failed prime after 20mins @ 4Ghz with 1.45v
Will start again with lower volts and play about with the GTL volts a bit.

How high is it advisable/safe to go to with NB volts to test max fsb?

[Forsaken1]

Good news for Abit IP35-PRO owners.The 16B09 bios reduces the .1+ voltage drop from bios setting to windows on the E8400.Now it takes less volts in bios to achive same clocks for me.

[karateo]

Ive got a Q750A032 E8400 which seems very poor so far.
Failed prime after 20mins @ 4Ghz with 1.45v
Will start again with lower volts and play about with the GTL volts a bit.

How high is it advisable/safe to go to with NB volts to test max fsb?

post your settings on the DFI thread to try help each other find 24x7 settings

[op1e]

Currently testing my e8400 on board in sig (650i). Ran ORTHOS at stock voltage and core 1 failed within a minute. Bumped up a bit (1.14) and left to run overnight and failed after 2 hours or so. Core Temp shows my VID as 1.0375. I'm trying to get stock speed stable before I oc, so far at 1.16v and my NB at 1.45 to be safe. Temps are great so far, 48/53 cores and 34 cpu in SPeedfan 4.34 beta 38. This is on water in sig.

[Resurgence]

Did you already encounter problems of FSB Wall to 440MHz (FSB) with E8500?
I do not manage to exceed the 440 stable :/
I am astonished.
According to you that could be because of the bios or the motherboard?

[CERO]

it is not very commen that those chips are fsb walled @ 440, I think there is a setting u overlooked....

[l3fty]

Alright, so with the new E8400 and the 16B09 bios here's what I'm getting.

This is exactly what I was hoping would happen with a cpu exchange, lower volts and 4ghz stable while closed up in my desk on air cooling.

I know I'm not in the same ballpark as some of the other extreme numbers, but I have slow RAM that doesn't like much more then 480FSB and really, 4ghz is good enough for me. I included my settings from uGuru if anyone was curious.

That's a great OC at those volatage's HaTaX. I'm curious about your GTLREF settings. Did you decide on them before or after your vcore? Did lowering them help make you Orthos stable?

Oh and thanks Uncleweb.

[op1e]

GTLREF? You guys are speaking another language to me with your Intel chipsets.
The only other setting I have is FSB/VTT voltage, and I havent even played with that yet.

[dogsx2]

Q746A510 Air Cooled by Kingwin Revolution H.D.T. (Heat-pipe Direct Touch) CPU Cooler RVT-12025 with Bolt-Thru-Kit with Screws & Springs. DFI Blood Iron a bit droopy.

Told you it would be the easiest oc you ever had.

[flesheatinvirus]

The temp info issue with these new Wolfdales is certainly a concern though Im running a modded single water loop just for my chip which keeps things rather chilly in my test rack but everyone building a new rig should keep a close eye on things and hopefully we can find a resolution to this matter. These Wolfdales really crank for the money despite there lack of accurate temp measurement and for the money are still the best bang for the buck price/performance wise.

[zlojack]

Here are my results at 9x450 after 17 hours small FFTs

[CERO]

Nice keep pushing it

[zlojack]

Nice keep pushing it

Yep.... next up 475 FSB...

I'm still having some issues with the Maximus Formula and the RAM. It won't post on anything other than AUTO

I'll have to have a closer look and do some more testing.

[CERO]

Yep.... next up 475 FSB...

I'm still having some issues with the Maximus Formula and the RAM. It won't post on anything other than AUTO

I'll have to have a closer look and do some more testing.

I got the board aswell, I find 333strap works way better, i got probs with 400 strap beyond 450fsb to post, could be a curten divider causing it as with 333strap 1:1 @ high fsb the board got a hard time to post, but using other divider it will post without a prob with acceptable "low volts", right now I am priming 468fsb with 1.20FSBv and 1.49NBv , clock twister strong, both dram static read control/ transaction booster disabled, cpu PLL: 1.50v/ Sbv/ SB1.5: 1.05/1.50, CPU/NB GTL: 0.63x/0.67x, u might use these settings and adjust it accordingly.

as for your RAM, disable transaction booster, often the culprit when going high FSB, u might even need to relax to 1.

[op1e]

Working on 400x9 right now, is 1.33 normal for this speed? Seems kinda high. Also had to raise NB to 1.5v or I cant even get into bios. remains to be seen how 650i will do with this chip.

[CERO]

3.6ghz @ 1.33v, seems abit to much for a wolfy at that speed, with those u can most likely get yourself up to 4.0ghz or more( ofc some cant), think it is your board being the culprit:X or a setting you might have overlooked

[flesheatinvirus]

No vmods yet. I do run bios Vc regulation disabled which actually helps stability beyond a certain point on my Wolf as compared to my Quad which seemed to require it. I can run a 333 strap right up to about 535 or so then the bus gets moody and 400 is needed. Decent board

[op1e]

I raised the FSB/VTT voltage to 6% and bumped the vcore to 1.41, only droops to 1.39. Dont know which one was the fix, but I'm gonna dial in 445x9 and see how little I can run on. In XP now at 3825. I forgot that 680i has a FSB hole at 400, so maybe 650i has the same problem. Even at this vcore I havent cracked 60 on the cores and much more than 40c load cpu. Weird, at 3600 it was priming fine until I opened a browser, then would lock up.

[Zucker2k]

Would you care to share that 8.5x506 setting?

I have 4.3GHz on the 9 multi but would like to test the 8.5 for the hell of it and maybe better bandwidth

I haven't had time to test out yet; even though, it's been rock solid playing GRAW2. I finally came around to testing this in a warm environment (32c) just to be sure I'm ready for summer.

Here's a screenie of it priming while I type this reply. Will post settings as soon as I establish it's stable.

[HaTaX]

That's a great OC at those volatage's HaTaX. I'm curious about your GTLREF settings. Did you decide on them before or after your vcore? Did lowering them help make you Orthos stable?

I decided on them after I had stayed under the 1.30v range, When I was at 1.29 and would run orthos it would fail right away. I checked my GTLREF and found it to be at 69/67 so I started working my way down. Once I found that orthos could run for at least 10 minutes, I moved them each down 3% more and that's where I ended up at.

It's been stable since I started that run but I've been trying out some different OSes so I haven't been letting it run for more then 5 hours at a run yet..

[soundx98]

@Zucker2k
Your screeny is showing 4300 in CPUID and CPU-z and 4554 in Orthos?



I'm very confused again

[mrcape]

Hey Sound, it's because Orthos sees the multiplier as 9x instead of 8.5x.

[soundx98]

D-Oh!
Goes to prove I confuse easily
Thanks mrcape!