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sli card underclocking.

post #1 of 11
Thread Starter 
i just got my sli set up, and just like when you run one 9800gtx+ it is under clocking one of the cards. i tried to use riva tuner to force it to run at performance 3d at all times but i cant get it to work.
any ideas on how i can get both cards to run at 3d performance at all times?
    
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post #2 of 11
i heard in sli, if one card has a higher clock, the other ones lowers itself down to match the other cards clock.

not sure if it does or not, it just came to my memory that i read somethign like that somewhere.
    
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post #3 of 11
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post #4 of 11
Thread Starter 
evga precision is what is telling me its down clocking its self.
    
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post #5 of 11
Use MSI afterburner.
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post #6 of 11
Quote:
Originally Posted by cee;12174289 
i heard in sli, if one card has a higher clock, the other ones lowers itself down to match the other cards clock.

not sure if it does or not, it just came to my memory that i read somethign like that somewhere.

cee is correct. If you successfully SLI two different clocked cards, the faster one will underclock to match the other...
post #7 of 11
plug a moniter into each, or use a dummy plug and it will not downclock biggrin.gif

if your taling about what the people above are saying, haveing a super clocked and a vinalla card then yes they will downclock. (don't think you are) then they are right.
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post #8 of 11
Thread Starter 
desktop2011012812044880.jpg
it runs at 301mhz at first the randomly runs fine. how can i get it to run at full speed all the time?
desktop2011012812053519.jpg
    
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Intel q8400 GA-EP45-UD3P(rev1.6 bio Fb for sli patch) evga 9800 gtx+@830mhz SLI 4gb of Gskill DDR2@1066mhz(5,5,5,15) 
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wd 1tb LITEON 7 x64 sli patched. Corsair TX 750 watt 
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post #9 of 11
That setting (if im familiar) is contained in a little file that is a part of the cards bios, some cards you may be able to do a custom flash and force the profile to stay on... the latest version of msi afterburner may also have this option in it, but theres another trick (cant remember off the top of my head) that unlocks some of those features. If you can manipulate the voltage on MSI than your good, if its greyed out than you need to unlock it. Lemme see if I can find the link in the next little bit... try to get you on the path you want to be on.

Sorta begs the question, why not allow it to step, unless you just want the clocks to stay the same all time? (im thinking added heat)
 
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post #10 of 11
The question you should be asking, imho, is 'How do I get them to both DOWNclock to 301MHz like they're supposed to do when in 2d mode'?

And the answer to this (I'm guessing) is that you're running two monitors, and this is what happens when you do so ... the card w/2 monitors plugged in doesn't downclock.

Do both cards pop up to 799 when you go into 3d mode (i.e. gaming), and if so, why do you want them running full-bore all the time instead of (properly) using 2d clocks when in 2d?

I'm pretty sure if you want to force them both up to 799 at all times, you need to modify the bios to change your default 2d clocks to 799.

Rivatuner is no longer a useful product unless you're in XP and running really old drivers ... it's not been updated in forever, presumably because Unwinder/Alex is on the Afterburner/Precision team (i.e. a paid gig) now.
    
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