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[Official] MSI GTX 680 Lightning Owners Club - Page 487

post #4861 of 7827
Hey there again

so I finally got my Lightning baby home with all other components and I started a little bit OC'ing smile.gif

flashed 3A, installed AB 2.2.3 and began

atm i found max stable core clock at +155 with +93mv and power limit at 300 %

now i will move to memory. any ideas which programs should I use for testing memory OC ?

for core I found maxxed Unigine Heaven 3.0 is pretty good...

btw I let it run during night so I am sure +155 is stable for more than 6 hours of UH 3.O

thanks for help
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post #4862 of 7827
Quote:
Originally Posted by bahadirkazan View Post

Hi friends. rolleyes.gif I need 3A bios with no voltage limit. I have 3A bios on first page but its already have voltage limit. mad.gif If anyone have perfect 3A bios please send me.. doh.gif

Get Afterburner 2.2.3, it is the one that give you unlocked voltage.
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post #4863 of 7827
Quote:
Originally Posted by sherlock View Post

Quote:
Originally Posted by bahadirkazan View Post

Hi friends. rolleyes.gif I need 3A bios with no voltage limit. I have 3A bios on first page but its already have voltage limit. mad.gif If anyone have perfect 3A bios please send me.. doh.gif

Get Afterburner 2.2.3, it is the one that give you unlocked voltage.

Yep, 2.2.3 for over-volting. Later versions need to be edited to allow voltage control. It only takes a sec to copy/paste the edit though if you don't want to use 2.2.3.
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post #4864 of 7827
Hallo guys, finally I fitted my Lightning!
Just some infos, please...
My LN2 bios is the latest unlocked one, so it's OK...
I could update non-LN2 bios with latest version, does it worth?
As I use latest Afterburner I should copy the strings in first post to unlock overvoltage as in 2.2.3 version, right?
Thank you very much from a noob... rolleyes.gif
post #4865 of 7827
Quote:
Originally Posted by dph314 View Post

Yep, 2.2.3 for over-volting. Later versions need to be edited to allow voltage control. It only takes a sec to copy/paste the edit though if you don't want to use 2.2.3.

I'm using 3A bios on LN2 and using AB 2.2.3 but he gives me max. 1.310V, not higher.. mad.gif
post #4866 of 7827
guys realy need an advice on the memory overclocking:

it seems like I can push at +860 on memory without crash but for example in unigine heaven it runs great for about 5 min and than out of nowhere my power usage drops from 90 % to 70 %, GPU temps and usage also drops and FPS goes down. what does that mean ? that the self error checking on ddr5 come up ? or anything else ? also what do you recommend for memory overclocking ?

I can't find any useful thread frown.gif

also what do you think about testing stabilty with msi kombustor ? I mean is it any good for core oc or mem oc ?

thank you and I hope I will get some answers

PS: I am pretty sure my top core clock is +155. now i need to find memory sweet spot. how the hell should I do that : I realy dont like starring on monitor looking for one bad texture or pixel smile.gif
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post #4867 of 7827
Quote:
Originally Posted by bahadirkazan View Post

Quote:
Originally Posted by dph314 View Post

Yep, 2.2.3 for over-volting. Later versions need to be edited to allow voltage control. It only takes a sec to copy/paste the edit though if you don't want to use 2.2.3.

I'm using 3A bios on LN2 and using AB 2.2.3 but he gives me max. 1.310V, not higher.. mad.gif

That is 1.36v. Afterburner reads voltage inaccurately, but if yours is anything like mine, it consistently shows 50mv less than what it's actually at. So if Afterburner is showing you 1.31v, it's really 1.36v thumb.gif

Quote:
Originally Posted by Lukas026 View Post

guys realy need an advice on the memory overclocking:

it seems like I can push at +860 on memory without crash but for example in unigine heaven it runs great for about 5 min and than out of nowhere my power usage drops from 90 % to 70 %, GPU temps and usage also drops and FPS goes down. what does that mean ? that the self error checking on ddr5 come up ? or anything else ? also what do you recommend for memory overclocking ?

I can't find any useful thread frown.gif

also what do you think about testing stabilty with msi kombustor ? I mean is it any good for core oc or mem oc ?

thank you and I hope I will get some answers

PS: I am pretty sure my top core clock is +155. now i need to find memory sweet spot. how the hell should I do that : I realy dont like starring on monitor looking for one bad texture or pixel smile.gif

That kind of sounds like the ECC is kicking in. Clock the memory too high and error correction kicks in and throttles it. It won't crash, you'll just get less performance, which sounds like exactly what is happening to you.

I'm just guessing, I don't even know if the LN2 BIOS has ECC or not. But it sure sounds like that's what's happening. Just give the memory voltage a little boost and see if that helps. If not, then you just have to lower the overclock.

Testing with Kombuster is great for testing temperatures, because Kombuster will get your card hotter than any game will. But for actual stability I prefer testing with the actual games I'll be using the overclock with 2cents.gif
Edited by dph314 - 1/10/13 at 12:47pm
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post #4868 of 7827
thanks for info

bad thing is I am looking for the sweet spot and its rather hard to find on memory. sometimes it happens after 5 min in heaven, sometimes after 20. also it seems it didnt do anything in far cry 3. if mem is +865 far cry crash. if +860 it runs and I can't be sure if texture flicker is mem artefact or ingame issue from ubisoft.

atm I am try memtestG80 and memtestCL from F@H utility site. anyone have exp with it ?

seems like memtest80 can max use 1278mb and also "some" module 20 is giving me errors. any info ?

and with memtestCL it can use up to 1908mb (runnning it atm with 800mhz mem so i am waiting for results)

thanks
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post #4869 of 7827
Hello everyone! I just stumbled across this quality thread earlier on and I figured I would post my MSI 680 Lightning adventure here. Just nabbed one of these cards this week and followed the OP instructions to unlock it etc. Managed to get it stable at 1350MHz/7008MHz which I am very pleased with. Just one minor niggle, I seem to get a little bit of judder (or slight FPS drops) in 3DMark11, it seems to be a bit random but it can affect the overall score a little bit. Anyone have any idea what this could be and how to remedy it? I'm thinking I need a fresh re-install of the OS because if I run 3DM11 the moment I boot up the juddering is none existent but if I run it later on (20-30min) it comes back again. It's a weird one, I'm hoping it's just a program making it have a mare from time to time because Heaven and all my games seem to be completely free of this.

Anyways, here is my screenshot:



Loving these 680 Lightning cards! thumb.gif
post #4870 of 7827
There's something wrong...
80.04.28.00.3A LN2 bios with AB 2.3.0 modded with 1st page string.
I may just raise up to 1.089V & I don't have the Power limiter slider; I tried with 2.2.3 and that's the same...
I checked my bios backup with the one you provided and there are difference...
Any help, please?
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