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 Enabling C1E, EIST, CIA2 ..., and any other power saving options

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TSmizivincible
post Jul 22 2009, 06:42 AM, updated 17y ago

"They'll be singing que sera sera"
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Senior Member
1,633 posts

Joined: Oct 2007
From: Cheras, Selangor


As mentioned above,

After we determine our oc settings stable after (doesnt matter Prime95,OCCT, Orthos) few hours of stressing, can we enable CIE,CIA2 and EIST ? Any chance of causing instability ?After enabling back do we have to stress it again just to make sure its safe ?

I finally decided to go with 4.1ghz daily @ 1.225v as it's still under stock voltage, (referring to VID, it's 1.2375v). Because on 4.2ghz I have to pump until 1.275v and 0.1ghz doesnt make any significant difference in real life performance. SS attached. The thing is now I wanna know whether enabling all (or either one or two of 'em) is safe for overclocked system.

I got difference answer thru google, overclock.net, extremeoverclocking.com and few other overclocking websites. So might as well open up the discussion to all the oc-ers here. Do you actually enable all the power saving options after you determine your daily overclocked setting system ? What to do and what not to ?

Just to share with you few posts regarding this issue -

QUOTE(T3h_Ch33z_Muncha)
Well i enabled every power saving feature on my OC'd e5200 and suffered no performance hits or instability.


QUOTE(Webrider)
As long as ur overclock is safe u can turn these settings on. Benefits are a lower power consumption while ur not stressing the cpu and lower temps. So yea go ahead as long as the OC is safe biggrin.gif


QUOTE(guyladouche)
Another confirmation that you can re-enable all the power-saving features you want and it *shouldn't* hinder your stability of your OC--that's what I've experienced on my current intel system.  With my previous AMD system, the mobo would fail to boot if the system was OC'd and you turned on cool 'n quiet.  So it does seem to be dependent on the mobo, though my old one was very low-quality, so perhaps that's why...


QUOTE(GoHigh)
If you set your voltages on AUTO, then, the power saving functions will work. It will lower the voltages to match a lower frequency of the FSB. However, if you manually input the voltages in, like in most cases, then the voltages will not drop when your computer goes into the C1E state, negating any power saving feature, and end up overvolting an slower clock speed of the CPU.

Will your computer be stable? Most of the time. Is it safe to do so? Not quite sure, but most likely yes. Is it good to do so? Maybe not.


Well the last post seems against the idea of enabling the power saving options. What say u guys ?

TSmizivincible
post Jul 22 2009, 02:55 PM

"They'll be singing que sera sera"
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Senior Member
1,633 posts

Joined: Oct 2007
From: Cheras, Selangor


QUOTE(x-1o8-x @ Jul 22 2009, 09:02 AM)
i thought i already answered your question....
turning on or off EIST in BIOS is pointless since as soon you manually adjust the multiplier and vcore, it is automatically disabled... EIST is controlled by the OS under power options. as for C1E, it shouldnt be a problem, though there are cases stability is compromised when C1E is turned on... my point is, turn them on if u want to... but 1 thing u have to remember, since EIST only runs when AUTO is set in BIOS, it will always be disabled when u manually configure a voltage and multiplier... u can c EIST doing its job by lowering the VCORE in CPU-Z when ur proc is not on load... multiplier goes to C1E... therefore, when you overclock, try NOT to set voltage value to AUTO smile.gif... doing so will definitely increase the risk of instability
*
Yes you did, but I just want to get everyone's opinion here. The thing is some of the answers clashing with others. Ive searched and getting difference opinions tho. If everything clear up I bet I will be just turning onthe C1E.

Anyway thanks for all of your opinions.

Btw we have difference answer too here, anyone can clarify this ?

This post has been edited by mizivincible: Jul 22 2009, 03:02 PM

 

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