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Overclocking SLI 580 Direct CU II

post #1 of 15
Thread Starter 
I think its time to try and push the clocks of these cards up.

The first thing I would like to know to start of with is around what clocks would these take at stock voltage?

The second question is at what temps should I be stopping on with the 5 series?

Right now I have been running the fans on auto and they have been more than capable of keeping both cards cool. I know im probably now going to have to set up a custom fan profile for these after overclocking them more.

I also know that I cant change the voltage in MSI afterburner on these cards, is that asus's way in trying to get me to use Asus smart doctor, overclocking software that was provided with the cards and is there anyway to pass this if so so that I can just use MSI afterburner?
post #2 of 15
MSI afterburner works just fine for me, but mine is reference card and it goes up to 1.23V. Strange that Asus changed that for Direct CU II.

You can try EVGA Precision, should be better than Asus doctor.
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post #3 of 15
Thread Starter 
Quote:
Originally Posted by McDown View Post
MSI afterburner works just fine for me, but mine is reference card and it goes up to 1.23V. Strange that Asus changed that for Direct CU II.

You can try EVGA Precision, should be better than Asus doctor.
Can you change the voltage in Evga Precision?
post #4 of 15
Even after enabling voltage control in MSI AB? Sucks o.O

Not much to contriboot. Good luck w/ OC, report back
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post #5 of 15
Quote:
Originally Posted by Jue View Post
Can you change the voltage in Evga Precision?
I'm recalling reading that it can, worth to try anyway.
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post #6 of 15
Did you enable full voltage control on MSI Afterburner?

I have an ASUS brand video card and it works just fine overvolting...

I wouldn't touch Smartdoctor with a 10 foot pole. It is the buggiest program I've ever had the misfortune to use, and I'm not subjecting my hardware settings to a buggy program, even if it was the only one to allow voltage control.

EVGA Precision and MSI Afterburner are the way to go.
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post #7 of 15
The DCII use a different voltage regulator chip than reference so it is not supported by MSI AB. The newest beta of AB does atleast support my 570 DCII though so it might work on the 580 so why don't you check on post back if it does because I might be upgrading to a DCII 580 soon.
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post #8 of 15
Thread Starter 
Quote:
Originally Posted by juano View Post
The DCII use a different voltage regulator chip than reference so it is not supported by MSI AB. The newest beta of AB does atleast support my 570 DCII though so it might work on the 580 so why don't you check on post back if it does because I might be upgrading to a DCII 580 soon.
I'll try that thanks.
post #9 of 15
Thread Starter 
Quote:
Originally Posted by juano View Post
The DCII use a different voltage regulator chip than reference so it is not supported by MSI AB. The newest beta of AB does atleast support my 570 DCII though so it might work on the 580 so why don't you check on post back if it does because I might be upgrading to a DCII 580 soon.
That worked for me thanks, it now allows me to change the voltage unlike the previous version.
post #10 of 15
I was able to hit 930 core on my Lightning at 1.11V. This was 99x Crysis Warhead stable. I managed to run 3DMark 11 at 970 core at 1.16V, but couldn't go higher than that regardless of voltage.

Never tried on stock voltage, so I would imagine 825-875 on stock voltage. Maybe 900 is even possible.
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