E8400 & 780i OC Settings - Results

[SugarJ]

Originally Posted by rjbarker

Ok, so here's where I'm presently at...
1515 FSB x9 Multiplier = 3.4 Ghz

Hmm. 9x378 = 3402. Is this your bus speed?

vDroop under load is very common, worse on some boards than other. My vCore is set at 1.3875 in BIOS, but reports at 1.32 under load.

I wouldn't push your system any higher untill you've got your HSF installed. 65 degrees is about as warm as I'd go. My system currently reports max of 48 under load.

I'd be tempted to set your SPP and MCP voltages manually, start low and bump them until system stays stable. Auto settings tend to overvolt slightly.

Using 4 sticks of ram you may have to drop to 2T timing. If you were running Vista I'd say to put it in anyway, but I never had 100% memory full with 2GB under XP.

And you're doing fine. At least you're asking questions before you release the magic blue smoke out of your machine.

[3.0charlie]

(Sugar, nVidia uses the quad-pumped equation for their board's FSB adjustment - your maths are correct. Simply divide by 4)

OP, You're doing fine, asking the correct questions and moving forward step-by-step.

I used to have an E8400 that did 3.8Ghz at stock volts (1.225V) on an Asus Maximus Extreme. Going past 4Ghz needed more volts for stability (1.30V), and it reached 4.3Ghz with 1.40V. That last Vcore was my personal limit too.

Once your new HSF is installed, continue benching raising the Vcore until either 65C (under load) or 1.4V (BIOS) are reached. Those were my limits. As for stability, you can use OCCT (Download - OCCT Website english) - the 30 minutes auto-test is just fine. And keep a close eye on those temps.

[SugarJ]

You know, I have a 650i board in my other machine upstairs. I just totally blanked out on that. Long day.

RJ - listen to what 3.0Charlie says. Very experienced, and he's helped me lots.

[rjbarker]

Thanks very much folks!!! Much appreciated. I have heeded the warnings, as well as using my common sense and have backed everything off to Stock, until I get my new HSF installed.
I did record my numbers so that once I have it installed, I'll be able to go right to my Settings for the 3.4Ghz, although I think I'll try the vCore a little lower to start, perhaps 1.225 and go from thier.
Anyhow, this has been a great week for me, as far as learning all this "Geek" stuff...even my wife commented that she is now with a Geek ..tooo funny!
Great hobby though really, I definitley feel a lot more comfortable playing around in the BIOS. Up until awhile ago I would NEVER have held the Delete key while Booting up, now I'm saving / Loading my Settings in BIOS.

Thanks again folks and I'll be bach with my OC'ing questions in a few days.
I'll be quite satisfied to get 3.6 / 3.8 Ghz stable and running cool!

Cheers

[7oPd4wG]

Nice clock and awesome info to help others. I just switched from a e6750 to a e8400 myself. Biggest difference i can see so far is the core volts and not having to adjust them as much. I have only changed the the core to 1.22 so far and nb to 1.29 and have been occt stable for 30 minutes. I will attach a pic of the readings as well.
Temps puzzle me a little core 0 hangs around 42 and core 1 never moves from 51. Come to think of neither have changed idle or under full load yet they stay at 42 and 51 and as you can see i have more than one temp logger at a time going. I know i can get 4.05 easy and prolly hold there but have been taking it slow so far. Let me know what you think. My feelings don't get hurt easily so fire away.

[3.0charlie]

1. Run OCCT for 2 hours minimum.
2. Your chip has stuck sensors - which means that even under load, the temps never reached 42C on Core 0, and 51C on Core 1. Once the chip passes those thresholds, the sensors will record accordingly.
3. Welcome to the Forums.

[7oPd4wG]

Should i have them replace it or will they eventually work?

[SugarJ]

Welcome aboard!

You've probably got stuck temp sensors. Try running the Linpack test in OCCT, it pushes the CPU a little harder, or try the Intel Burn Test.

If you do get movement on the temps, they should be within 3-4 degrees at load. If they aren't, a remount is recommended for your HSF.

EDIT: Ninja'd!

[3.0charlie]

Originally Posted by 7oPd4wG

Should i have them replace it or will they eventually work?

Intel does not accept RMA's for stuck sensors. But they will work once you push the chip past those 2 temps. Like Sugar wrote, try Linpack or IBT for higher temps (but not necessarely stability...).

[7oPd4wG]

Ok thanks for the help I have remounted it like 4 times now and it hasn't changed yet. With my e6750 there was a degree difference at idle but it idled at 27 and 28. I wondered why the e8400 idled higher with less volts going through it. Thanks for the tips appreciate it very much.

Originally Posted by SugarJ

Welcome aboard!

You've probably got stuck temp sensors. Try running the Linpack test in OCCT, it pushes the CPU a little harder, or try the Intel Burn Test.

If you do get movement on the temps, they should be within 3-4 degrees at load. If they aren't, a remount is recommended for your HSF.

EDIT: Ninja'd!