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GTX 580 sli OC 900 core shld i OC more?

post #1 of 8
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hey guys i have gtx 580 in sli and i have succesffully OCed them to 900/1800/2200 on 1.075

1stly i wanna know is that is the voltage iam using good or bad for such an OC and also is it safe to use this OC with my cards?

also is there any reason ( no e-peen) to OC these cards anymore coz some guys are telling me that when u OC the cards over 900 core they give diminishing reutrns

2ndly the GPU1 (upper Card) hits max temp of 90 or so and lower is 60-70 is this normal?

Also the best way to Check OC stability nowdays ?

thanks guys
    
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post #2 of 8
I would recommend kombustor or furmark for checking stability, but I've had OCs fail on me in game after running for hours in both of those, so play a game like crysis or metro 2033 for a while to make sure.

it's expected that the top and bottom card should have some discrepancy in temperature but that seems higher than normal. still, as long as you're staying in that range it's nothing to worry about, although the upper card may limit you from OCing any more.

that being said, there really isn't much reason to OC any more, after 900 core you definitely start seeing less of a difference for each increase in core clock, and 580 sli at 900 core should rip through anything you can possibly throw at it. and it seems like a good OC to me thumb.gif
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post #3 of 8
Kombustor and furmark are useless for checking 580s since OCP throttles the cards down when these power bugs programs are detected. Hourly loops of metro, heaven and crysis on extreme settings should be a good indicator of stable gaming OC. If you want to make sure your OC is 100% stable in all possible cases - I heard folding@home is brutal on GPUs.
Edited by DimmyK - 8/7/11 at 4:56pm
post #4 of 8
You could also just leave them below 850, unless you're benching.
Anything between 830-875 should be in a good balance between heat/power usage and performance.
Anyway, if you're only gaming (like me), two 580GTX basically own anything you might wanna play at, even in 3D, right? wink.gif
post #5 of 8
OC till she blows.

THE OCN way thumb.gif
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post #6 of 8
Quote:
Originally Posted by HomeDepoSniper;14501846 
OC till she blows.

THE OCN way thumb.gif

Yay:lachen:

cheers.gif
post #7 of 8
Load up BC2 and see how they perform. If they don't crash you're good
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post #8 of 8
Quote:
Originally Posted by Ulver;14501651 
You could also just leave them below 850, unless you're benching.
Anything between 830-875 should be in a good balance between heat/power usage and performance.
Anyway, if you're only gaming (like me), two 580GTX basically own anything you might wanna play at, even in 3D, right? wink.gif

Basically - yes biggrin.gif except handful of titles. Metro and Just Cause 2 refuse to run maxed out @ 60FPS in 3D, I also heard that Witcher 2 and DA 2 are no slouches when it comes to kicking your PC in its throat. tongue.gif
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