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[Official] NVIDIA GTX680 Owner's Club - Page 327

post #3261 of 5613
5/22/12 at 9:04pm
Quote:
Originally Posted by Sxcerino View Post

I'm having a bit of a weird problem and was wondering if anyone has any input tongue.gif
I'm running 2x 680s in SLI, but none of them seem to use over ~90% (most of the time it hovers at 70-80) of power target; they do boost their clocks however.
When they boost their clocks, GPU1 always boosts lower than GPU2 (before any thermal throttling comes into play), is this normal? i.e. I would have the top card at 1183 and bottom at 1215.
Thanks biggrin.gif

This is normal. It's not uncommon for the cards to hardly ever boost over 100% of the power limit. The clocks will also boost independently, and this shouldn't cause a problem--mine do the same thing. Also, just know that the cards will never completely boost the same, they'll always vary a little bit, but you can get them pretty close. To do this just disable card synchronization in afterburner or precision, and set each card's offset separately, and in such a way that you offset the lower card more than the higher boosting one. Do this until they're even. This will take some simple math, or if you're lazy, just fire up GPU-Z's render test in windowed mode and adjust until the OC software's hardware monitor shows the same boost clocks for each card.
Edited by svthomas - 5/22/12 at 9:34pm
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post #3262 of 5613
5/22/12 at 10:40pm
Quote:
Originally Posted by Arizonian View Post

What CPU are you using? Any over clock on it?
Good idea would be to go to "Profile - Edit system" and list your computer components so we know what your dealing with. Help us help you. wink.gif
A lot of times when your GPU isn't reaching full potential can mean either the games your playing aren't as demanding or the CPU is holding back your GPU's, aka bottle necking performance.

I'll add my rig soon, OCN has been kinda slow for me lately for some reason tongue.gif

It's a 3570K @ 4.5ghz @ 1.3v playing Diablo 3
Quote:
Originally Posted by svthomas View Post

This is normal. It's not uncommon for the cards to hardly ever boost over 100% of the power limit. The clocks will also boost independently, and this shouldn't cause a problem--mine do the same thing. Also, just know that the cards will never completely boost the same, they'll always vary a little bit, but you can get them pretty close. To do this just disable card synchronization in afterburner or precision, and set each card's offset separately, and in such a way that you offset the lower card more than the higher boosting one. Do this until they're even. This will take some simple math, or if you're lazy, just fire up GPU-Z's render test in windowed mode and adjust until the OC software's hardware monitor shows the same boost clocks for each card.

Ah okay, I see. Thanks
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post #3263 of 5613
5/23/12 at 1:35am
Quote:
Originally Posted by Sxcerino View Post

I'll add my rig soon, OCN has been kinda slow for me lately for some reason tongue.gif
It's a 3570K @ 4.5ghz @ 1.3v playing Diablo 3
Ah okay, I see. Thanks

Your CPU is not holding you back in that case! lol
Im guessing Diablo 3 isn't going to be a massive game GPU usage wise, unless you are running extreme Res.
If you just want to check your cards will hit 99/100% load just run Heaven for a couple of minutes on max settings im sure your cards will max out then.
I always play with Vsync and on one 680 in some games the GPU only hits about 40% load as thats all it needs to hit those frame rates.
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post #3264 of 5613
5/23/12 at 2:07am
Hey i have a question...
How does amperage work when you sli GTX680's? 1 GTX680 needs a minimum of 38A or higher on the 12V line does that mean that GTX680 sli needs 76A on the 12V line? Or does it still only need 38A?
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post #3265 of 5613
5/23/12 at 2:50am
Hey, anyone tried the new 301.42 drivers? Any improvements?
Quote:
Originally Posted by Stuuut View Post

Hey i have a question...
How does amperage work when you sli GTX680's? 1 GTX680 needs a minimum of 38A or higher on the 12V line does that mean that GTX680 sli needs 76A on the 12V line? Or does it still only need 38A?
38A is for the entire system, so no, you don't double it. Nvidia states that the reference board will pull about 16A, but I would add a fair bit more than that to be safe. Say 60A in total, maybe? Depends on how many fans you have, if you are watercooling (pump draws some current), if you run an overclocked CPU etc.
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post #3266 of 5613
5/23/12 at 2:57am
Quote:
Originally Posted by Oystein View Post

Hey, anyone tried the new 301.42 drivers? Any improvements?
38A is for the entire system, so no, you don't double it. Nvidia states that the reference board will pull about 16A, but I would add a fair bit more than that to be safe. Say 60A in total, maybe? Depends on how many fans you have, if you are watercooling (pump draws some current), if you run an overclocked CPU etc.

Yeah i figured most of it out now.
I was debating with somebody who was going to SLI, he said he needed a 1200w PSU because it could deliver more amps and that his current PSU wouldn't be able to power thoes cards due to having not enough amps which is 80A....
I found that kind of hard to believe so did some digging. If i'm correct to measure the required amps you devide the needed watts by 12v.
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post #3267 of 5613
5/23/12 at 3:52am
my GTX680 (Gigabyte) is coming in today...
Any requests for benchmarks (No Crysis please, I'm not reinstalling that bloatware again) in regards to my current GTX580 VS GTX680?
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post #3268 of 5613
5/23/12 at 5:20am
Quote:
Originally Posted by Oystein View Post

Hey, anyone tried the new 301.42 drivers? Any improvements?
Still downloading mine... can anyone comment on this?
Slightly overkill.
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Slightly overkill.
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post #3269 of 5613
5/23/12 at 5:47am
Quote:
Originally Posted by zk1mpls View Post

Still downloading mine... can anyone comment on this?

No issues to report here. Havnt run any benchmarks but got to play BF3 last night and for me, best driver by far thumb.gif
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post #3270 of 5613
5/23/12 at 6:17am
im giving it a download right now 301.42 but my my girl friends dog ate through my Adsl cable so my 20Mbit/sec connection is not ZERO Mbit/sec and im USB Tethering off 3g connection to download it. im bummed to because i want to download Max Payne 3! its 35GB so i dont think i should use my phone or id not be able to use it for a few days haha. i need a new cable for my Modem. ill report back the effects of new driver. in a few.
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