Since that nowadays i'm leaving my PC on 24 hours for downloading, I'm downclocking my E7400 to save letricity..
Right now DC from 2.8 to 2.5Ghz(250x10). Set the voltage to just 1.06V. Currently testing it using Prime95. The temperature was so impressive.. So far maximum only 51C.

Successfully DC'ed my E7400 to 2.5Ghz (250x10) with voltage of 1.06V. Passed 1 hour of Prime95 with max temp only 51C!
Will try to lower the voltage more..



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how bout DC it at 2.8Ghz?

anyway, i tried running at default and no longer power down.. so it's cause by OC.. problem solved..

I wanna reach the lowest voltage possible.
Here's results with 1.04V:


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Everybody is going green
There's should be a thread for 'UnderClockers United'

Hazairi, do you use Intel's Speedstep™ ? and the C1E?
If I'm on '24hours downloading-mode' I just set the proc to default (2.8ghz) and when 'Idle' the PC will "underclocked" to 1.6ghz (266 X 6) @ 1.027v, and I enabled the ASUS EPU-6 (setting to 'power saving')
while I'm at it.

Yeah, if u ON the features, ASUS can save the power when it's idle.
But I prefer to do it manually and off the settings.. Just for experiment.. hehe

sth wrong with my PC yday.. i did not change any settings but suddenly my pc show artifacts during game and goes blank after tat.. like no video signal..

then i force restart it and it take some time to boot.. the mobo restarted a few times before able to proceed to POST.. then after running GPU stress test and CPU stress test, everything seems normal.. but i do notice that the CPU voltage fluctuates alot when idle.. usually it will idle at 1.16V.. but yday it kept fluctuate between 1.07~1.17V.. but stable during stress..

this morning when i turn on the PC.. everything seems normal until the user screen and it suddenlt BSOD and restart a few time before able to go to POST.. i go into BIOS to check settings and it says the PC failed to boot due to OC or voltage changes..

now i m running at default while seeking solution.. how ah?

Have u tried setting the BIOS to default settings?

im having a little problem wif my e7300.. sometimes it halt when loading windows.. have to restart many times.. and when log in my ram timing suddenly revert back to 800mhz. my ram suppose to run 1066mhz

my spec, e7300,giga ep43-ud3l,Kingston hyperx 1066mhz 5-5-5-18, 450w CM not true power, Zotac 9600gt,160gb hdd,5x12cm fans

my setting, stock vcore, 2.66x10,2.1core for ram.. cpu:ram ratio 1:2

my story begins here, i try to push my proc to 3.2..eventually it failed me sometimes so i revert back to 2.66x10 ( i think dats the ori speed for 7300?)
ram, another problem for me. this ram when i bought suppose to be 5-5-515 timing ori. and only runs 800mhz by default.. as i check their oficial website for setting, i adjust it the same like they recon, 5-5-5-18 , 2.1vdimm..so i could get 1066mhz
agter all this setting i still 'smetimes' get halt when booting and my bios said error due to voltage/settings.. which part i done wrong or maybe some hardwares actually bottleneck my whole rig? psu not enuff juice? or my ram is screwing me around?

anyine could enlighten me?

This post has been edited by evoangel: Dec 28 2009, 01:22 AM

have u tried running all the settings on default?

Let's see break it down briefly:
OC'ing the proc to 3.2ghz is considered a moderate OC'ing for the E7300, that wouldn't do significant damage, the failure to P.O.S.T due to not enough Vcore to the E7300, commonly.. so that rules it out atm...
The Ram, its hard to tell bcoz I believe in this situation, the problem might not be the RAM, but the whole system configuration and the most apparent culprit atm is an un-updated BIOS, because I believe it "thinks" that a 4:5 divider is more stable than a 1:2.

The only way to narrow it down is if you could borrow another ram (800mhz) to see if the prob occurs, IF the 'halt' still occurs, then you at least have an idea where the problem comes from...the BIOS..
After you update the BIOS, there's still one more step, to see if the system stable after updating.
IF the 'halt' still occurs, then its the mobo, thats the only deduction that can be drawn from this troubleshoot...roughly.

Another thing not to be overlooked: The PSU.
Sometimes its just the PSU who's causing the menace, but it always slip people's minds because the PSU always comes across as the 'unusual suspect' from the distraction of toubleshooting the other things.(mobo,bios, ram, etc.)So if you can get your hands on another PSU atm, you should give it a try to narrow down the problem.
For testing, a fresh cap ayam PSU can be used, but just temporarily for testing only.

OK bro, thats most of the troubleshoots you can DIY for now.

I hope you can do most of the suggested troubleshooting, which is enough to figure out the main villain, or villains.
It's worth it to do all things boring and tedious procedures, because it will get you closer to finding out what's up


@farscope,
I'm still thinking what's going on with your situation atm, I wont say anything yet until I'm sure with the comments prior to you post.

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Added on December 28, 2009, 2:50 amSometimes with a 1066mhz ram, with default settings usually it sets the ram to 800mhz, so need to manually set the ram clockspeed to 1066mhz...

It's just the bios...probably needs flashing...but can't tell yet...

This post has been edited by JoBigShow: Dec 28 2009, 02:50 AM

JoBigShow, may i know when you mean u boot up it takes 1 second and to shutdown it takes 1-2 seconds..do you mean to the bios or to the Disk with OS fullly loaded?


and another thing is when you turn off your computer completely, your cmos doesnt set the bios to the default ( this makes completely no sense). Your imagination quite power about the BIOS can quickly load default and then turn off and load restore OC setting.

Let me share with you. When you turn off your machine, the settings RUN AS settings are still stored in the bios. The BIOS is backed by a battery ( u know the round battery on your board). This same battery mentain's the time etc so you have the same exact config when you boot up. NVRAM is non volotile memory therefor IT NEEDS a battery!

Pls correct me if i'm wrong. Btw how old are you?

bro,glad for ya reply.. =) i pray the culprit its not my ram this rig is almost 98% new just the PSU is old only.. anyway im planning to get a new true power psu, well for future upgrade i dont ned to bother anymore..

bios eh, hmm have to check for updates..

anyway thanks again!

been running default for a day now.. everything seems ok, the voltage did not fluctuate.. mobo problem?

you mean u boot up it takes 1 second and to shutdown it takes 1-2 seconds..do you mean to the bios or to the Disk with OS fullly loaded?....

When power up, the system turns on (hangs) a second or two, shutdowns briefly for the same amount of time, then P.O.S.T. normally.
I've tried overclocking with two of my mobos, an Asus P5Q3, an Asus P5N-D and I think another Asus mobo, P5QPL-AM, and they all replicate the same process of 'P.O.S.T delay' that I have described, and that's something you should anticipated because how can any PC(not any that I know of) fully boot Windows in 2 seconds?

Ok, I might explained things a bit out of context regarding the 'reverting to default setting when PC is turned off', yes my imagination took the better of me when i try to explain it in analogy.
My, bad, I'm not a geek, I only able to project my interpretations subjectively or figuratively in that post.
Having said, I have spent hours researching on Asus mobo's (or at the least the one's I have overclocked) why it "delays the P.O.S.T." and can't find find any explanation, even ASUS themselves don't explain much of details.
(btw of course the battery saves the bios configuration, unless the mobo clears its RTC RAM by its self, which of course is impossible, unless the cmos battery is plain dead)

In essence, I tired to contribute to fellow forumer farscope what I know so far about this similar occurrence (which is natural process in my rig) if it ever to coincide in terms of my mobo's 'P.O.S.T. delay' behaviour,
in which pro-actively I'm hoping that it rectifies and not succumb to what we are sooo not fond off...hardware failure.

But then it occured that farscope's latest post indicates that my presumption were wrong, therefore narrows away from what I hope to be just a simple overclocking matter, into a situation more complicated and grim, but still trying to maintain that it is not a hardware failure, but of course foreshadowed by most people (who read his post) having the gut feeling it is a hardware failure, be it PSU or the motherboard, or etc. But I won't draw any conclusion yet until all possible troubleshoots has been done.

Anyways,
I hope you can donate an explanation prior to this so called 'post delay' on an OC'd configured mobo of mine? This would and will be very helpful.
Or more importantly figure out the solution of the distress forumer trying to figure out his situation... (farscope)

Why do you want to know my age? It's just an inappropriate question bro, especially with that sarcastic undertone.
Yes, I'm a 3 years old infant who manage to beat on a board with many buttons and think my parent's PC (that big metal box with string attached on the back and lights coming out from it) is a huge pacifier to play with and suck on


Jokes, thnx for highlighting my mistake in that post, will edited it later....

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Added on December 28, 2009, 12:26 pmmobo you say... it's could be the capacitors, vrm, mosfet, etc.
The capacitors (those one's next to the 775 socket) regulates voltage stability to the proc.
One thing I like to share, I've read that it's highly recommended Enabling LCC for a 45nm proc, which is the E7400.
Probably when you set to default, the AUTO setting for LCC is 'Enabled',dunno if this is related, but could be...

What else do you notice within the span of a day bro?



This post has been edited by JoBigShow: Dec 28 2009, 12:26 PM

JoBigShow, i must say u give good explanation for learners like me.. =)

Aren't we all learners my friend?
It's good to educate each other for the sake of collective integrity of knowledge behold by the standards LY.Net..

2 quick questions here.. (just flash in my mind suddenly)

1.Does Vcore had any different by using a Normal PSU compare to True Power PSU? i mean shud it be more stable on good true power PSU?

2. Do u think its reconmended to up VTT Core to get higher FSB? for instance 1.5v..

3. For my giga board there's an option to choose Turbo for Ram setting in Bios.. Should i switch it on or just leave it aside first?

Btw, Im hunting a decent PSU now.. probably WC setup by next year.. =)
PCP&C in my mind now..

after a day, everything seems normal under default.. voltage is normal.. rock stable..

i will try to revert back to my OC settings tomolo and see how it goes.. will keep u guys update..

apart from the POST delay and fluctuate voltage during idle, stress test and stress voltage all seems stable.. will try to confirm this tomolo when i revert back to OC settings..

This is sweet news, I recommend you enable the LCC, coz like i said before, its recommended for 45nm procs (like E7400)
Maybe this was the root of the cause of the problem....meaning did you remember that if you have the LCC enable/disable during the course when the Vcore fluctuated?
This is important data bro, hope you remember