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[Official] GTX 580 Overclocking Club - Page 5

post #41 of 3582
Quote:
Originally Posted by Roxborough View Post
I don't really see the point of overclocking the 580, it's fast enough as it is, and reducing it's life span for the sake of 2-4 fps isn't worth it. Water-cooling however, very worth it!

I'm happy with the performance of the 580, hoping it will last a good 2 years of max settings at 1920x1200.
A "mild" or even soft OC can't be that bad tbh
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post #42 of 3582
My OC isn't stable even at 840 MHZ!

It crushed while running Heaven DX11 Benchmark 2.5

Maybe it's not stable because of my CPU OC or something?
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post #43 of 3582
Quote:
Originally Posted by Moayad View Post
I created a new thread asking about my problem but got no answers.

Then I found this thread and I hope someone can help me here.

I have Asus GTX 580 DCII SLI and its running perfectly without any problem.

Recently i tried to overclock them using MSI Afterburner with these settings:
Voltage: 1.1
Core clock: 940
Memory clock: 2175

Everything went fine and the temperature were (65-70 at full load) but after playing Metro 2033 for 10 minutes the screen went black suddenly!

When playing Witcher 2 and after some time i got artifact.

I tried to lower settings a little (920mhz) but the same problem appear.

I know my OC isn’t stable but I don’t know why. Many others exceed 900 MHZ without any problem.

I’m afraid of losing my card if I keep testing non stable OC. If this’s the case, then I will avoid OC completely.

Processor: i7 950 OC 3.8
PSU: 1000w Thermaltake
Motherboard: Asus rampage III formula
Nvidia driver: 275.33
Artifacting is a clear indicator of too little voltage.

So a couple of things you can try:

1.)With the ASUS GTX 580 DCII I would recommend to use the ASUS tweak tool tests have shown the DCII to be more atuned and tolerant of ASUS cards...probably because it is coorperate made specifically from ASUS.

Basically from a logical point of view which tool you use should not make a difference but tests have shown that cards like for example the Lightning or DCII prefer their company self made overclocking tools
Probably because of some individual specific coding.


2.)Use the 267. Nvidia drivers ..they have shown to be the most tolerant and stable of overclocking among all the recent Nvidia drivers.

3.)The DCII has less phases than the Lightning so most results that you compared can´t be considered as equal...to reach the same power induction and voltage efficiency of a Lightning a DCII would have to increase the voltage about 10-15% more to compensate for the less amount of phases.
Basically what that means is you have to increase the voltage a bit more
Try going up to 1.2 that is normally the max save voltage ...but if you just wanna keep a high one for a single bench and are willing to keep thre fans at 100% up to 1.5 is also ok ...I did it myself.

4.)Lastly there is the possibilty of using a specific modified BIOS in order to force or adjust voltage and power inducting means.
I would only recommend this as a last option though since the use of a modded BIOS is not prohibited or doesn´t in any nature endanger your warranty but could still cause improper operation if not used or performed correctly.
They can be used for various means and purposes
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post #44 of 3582
Thank you very much for this useful post

i have two questions...

First, i tried before to use Asus SmartDoctor but i got the message cannot find asus graphics card or something like that

Second, i heard somewhere that increasing voltage too much is dangerous and may harm the card or shorten its lifespan. Are you sure 1.2v is really safe? You know I spent a fortune on these cards and i don’t want to kill it.
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post #45 of 3582
Quote:
Originally Posted by Kung Pow View Post
Artifacting is a clear indicator of too little voltage.

So a couple of things you can try:

1.)With the ASUS GTX 580 DCII I would recommend to use the ASUS tweak tool tests have shown the DCII to be more atuned and tolerant of ASUS cards...probably because it is coorperate made specifically from ASUS.

Basically from a logical point of view which tool you use should not make a difference but tests have shown that cards like for example the Lightning or DCII prefer their company self made overclocking tools
Probably because of some individual specific coding.


2.)Use the 267. Nvidia drivers ..they have shown to be the most tolerant and stable of overclocking among all the recent Nvidia drivers.

3.)The DCII has less phases than the Lightning so most results that you compared can´t be considered as equal...to reach the same power induction and voltage efficiency of a Lightning a DCII would have to increase the voltage about 10-15% more to compensate for the less amount of phases.
Basically what that means is you have to increase the voltage a bit more
Try going up to 1.2 that is normally the max save voltage ...but if you just wanna keep a high one for a single bench and are willing to keep thre fans at 100% up to 1.5 is also ok ...I did it myself.

4.)Lastly there is the possibilty of using a specific modified BIOS in order to force or adjust voltage and power inducting means.
I would only recommend this as a last option though since the use of a modded BIOS is not prohibited or doesn´t in any nature endanger your warranty but could still cause improper operation if not used or performed correctly.
They can be used for various means and purposes
Wow. Where to start ...

First off, what tests have shown Asus OC'ing tools to be better at OC'ing Asus cards vs. other tools like Afterburner?

When you OC your card, all that's happening is that driver is told what clocks to run the card at. It's an extremely simple process, along the lines of replacing one entry in the registry with a different entry. It involves no 'specific coding' whatsoever.

So not only is it not 'logical' that it would make a difference which tool you use to OC, it's darn-near impossible for it to make a difference.

Secondly, 1.1V is 1.1V. The number of power phases doesn't change the amount of voltage, or the 'efficiency' of the voltage that is being delivered.

I mean, if a card were to use like a 1-phase power delivery system, I could see the possibility that the 1.1V would be poorly regulated, such that it would waver in terms of it's actual voltage delivered.

But the DCII isn't some crap card with a sub-standard power delivery system. And as such, 1.1V on a DCII will, in no way, shape or form, have 10-15% less 'voltage efficiency' and 'power induction' than a Lightning would. The difference between the two cards is going to be something more like this:

DCII: The specified voltage is 99.99% accurate.
Lightning: The specified voltage is 99.999% accurate.

I know you love your Lightning and everything, and it's a great card ... but you shouldn't resort to handing out wildly inaccurate information in celebration of it's greatness.

Thirdly, could you elaborate on just how one would adjust 'power inducting means' via a bios mod? I've modded my bios a heck of a lot of times (in fact, I'm running a modded bios right now), and I've never seen any options available to change the 'power inducting means' in any bios editor I've ever used. Am I using the wrong editor? And what, exactly, IS the 'power inducting means'?

@OP: The reality of the situation is that every card, and more importantly, every processor (aka GPU or chip) is going to be different in terms of it's OC'ing ability. Not every sample is going to be able to do 940MHz at 1.1V ... or maybe not at any voltage.

You need to start low, and slowly work your way up to find your highest stable OC's. I would also recommend leaving the memory at 'stock' settings while you OC the core.

Lastly ... the perf difference between 900 and 940MHz is sooo small dude. Never in a million years could you ever detect the difference w/your naked eye. Even if your card 'only' does 900MHz stable, it's going to have absolutely zero impact on anything that 'matters'. Heck, I run my cards at 700MHz every day, even though they can actually do 855MHz. That's because, for daily gaming use, there's no real discernible difference even with a that large of a clock margin.
Edited by brettjv - 6/25/11 at 1:54pm
    
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post #46 of 3582
Recent owner of a 580 Lightning upgrading from a Sapphire 5850.

Screenshot Under load:



And idling temperature is about 31. In a room at 19 degrees. Loving this card!!!!

I will push the clock higher but for now at 885 is all that i need.
Any recomendation of overvoltaging this baby? (max offset on Afterburner)
Edited by cba1986 - 6/25/11 at 1:52pm
post #47 of 3582
Quote:
Originally Posted by Moayad View Post
My OC isn't stable even at 840 MHZ!

It crushed while running Heaven DX11 Benchmark 2.5

Maybe it's not stable because of my CPU OC or something?
Are you using MSI Afterburner? How much +voltage are you giving it? (be sure to unlock voltage control in the options tab to see this)

On a side note, at stock voltage on a reference card, I can do 835 on the core and 1077 on the memory. You're going to bump up the voltage to 1.040-1.050 lets say.
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post #48 of 3582
I'm going to put out the hate with my stream of justice then ask..
Anyway I can see what wattage my GPU is drawing? thanks.
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post #49 of 3582
Quote:
Originally Posted by juano View Post
Nope sorry not gonna let you give advice that will kill newbies cards without telling them that you aren't somebody that knows what they are talking about. If you have a problem with it why don't you report my post and we'll let the mods sort out whether you should be allowed to kill people's cards or if I'm wrong for trying to tell them not to listen to you.
That's is for me?
For your information i have been overclocking an ati 5850 for a couple of years, without a problem. I only look for a little information regarding volts for this graphic.
Well it doesn't matter i will get the info on anywhere else.
Edited by cba1986 - 6/25/11 at 2:29pm
post #50 of 3582
Quote:
Originally Posted by cba1986 View Post
Recent owner of a 580 Lightning upgrading from a Sapphire 5850.

Screenshot Under load:



And idling temperature is about 31. In a room at 19 degrees. Loving this card!!!!

I will push the clock higher but for now at 885 is all that i need.
Any recomendation of overvoltaging this baby? (max offset on Afterburner)
Very nice!
Maybe you are willing to squeeze a bit more anytime soon?



Quote:
Originally Posted by cba1986 View Post
That's is for me?
For your information i have been overclocking an ati 5850 for a couple of years. Without a problem. I only look for a little information regarding volts for this graphic.
Well it doesn't matter i will get the info on anywhere else.
I have asked him nicely to stop his irrelevantly alarming posts that are to be considered only particularly true.

He is right by saying that playing around with voltages is not always save!
Edited by Kung Pow - 6/25/11 at 2:33pm
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