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Friendly MSI HD 6970 Lightning Overclocking Competition

post #1 of 43
Thread Starter 
If you have the MSI HD 6970 Lightning or you've read about it, you know that the card itself is built like a tank and is begging to be overclocked to the max. I'd like to set up some kind of overclocking competition just to see what all of us real users without review cards can do with these things. This will be not so much of a competition as a learning experience. Obviously, every card is different and we'll all have different levels of success, but seeing each others results and how we got there might help.

What I need is some suggestions for a common method of determining overclock stability, guidelines for overclocking, information to be gathered, and methods of proof.

Right now, for stability, I'm thinking of a combination of kombustor, unigine heaven, and a certain time period of gaming to declare stability. We'd have to decide on the settings to use in kombustor and unigine. I'm not sure on the gaming.

For guidelines, I'm thinking of limiting core voltage to something like 1.25 so that no one accidentally fries their card in the process. This will also give us a good idea of where our chips stand.

For information to be gathered and proof, I'm thinking of screenshots of gpu-z, benchmark scores, afterburner screenshots, max temps (ambient temps if available), etc.

Let me know what you think and whether or not there's enough interest to proceed and I'll add some polls so people can vote on what to do. I hope that I'm not breaking any rules that I don't know about.

Even if you don't have a lightning, feel free to chime in anything. Maybe we can put our best against your best once we figure it out.biggrin.gif
Edited by breenemeister - 5/4/11 at 7:45am
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post #2 of 43
Thread Starter 
Anyone?...Anyone?...Bueller?

Looks like no one was interested when I first posted this, so I'm bumping this for interest. I'm trying to get some benchmarking done from time to time. I'm starting just with the core. Here's a screenshot of Unigine Heaven 2.5 at 1920x1200 with pretty much the default low settings. My CPU is OC'd to 3.8. GPU Core is at 990 and mem at 1375. Core voltage is 1.200. There's a light flash or too, but I'd call it stable. The benchmark runs at 1000 on the core as well at voltage of 1.200, but there's too many artifacts to call it legit. I'll have to pump up the voltage.
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post #3 of 43
This is kind of apples to oranges in more ways then one, but I figured I would share my 480 Lightnings results at 1920 x 1080 @ 900 / 1800 / 2100. Got the processor clocked at 4ghz as well.

Unigine2011-05-0814-00-27-53.jpg
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post #4 of 43
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Obviously, there were lots of reviews out there on this card, bu here's one from yesterday by hardocp. http://www.hardocp.com/article/2011/05/09/msi_r6970_lightning_video_card_review I like their reviews. Looks like they had little overclocking headroom without adding lots of voltage. The memory also doesn't overclock very well without voltage bumps.
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post #5 of 43
This is with my sapphire 6950 flashed to 6970 .. 940/1440 and 11.5a drivers

seems like these are abit faster than the lightning , im trying hard to get 60fps .

2a4a1ee67e.jpg
Edited by Xristo - 5/11/11 at 3:34am
    
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post #6 of 43
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Nice result, I need to rerun in 1080p. I'm guessing that should be the default resolution. I'm using unigine heaven 2.5 as opposed to 2.1. Should that be another standard. Any other benchmarking ideas.
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post #7 of 43
Thread Starter 
Quote:
Originally Posted by breenemeister;13464542 
Nice result, I need to rerun in 1080p. I'm guessing that should be the default resolution. I'm using unigine heaven 2.5 as opposed to 2.1. Should that be another standard. Any other benchmarking ideas.

I just ran your 1080p settings and ccc 11.5a must be a serious improvement over 11.3 in this benchmark. I just ran at 980/1450 and didn't get as good a score as you did at your lower clocks.
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post #8 of 43
    
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post #9 of 43
Quote:
Originally Posted by breenemeister;13469218 
I just ran your 1080p settings and ccc 11.5a must be a serious improvement over 11.3 in this benchmark. I just ran at 980/1450 and didn't get as good a score as you did at your lower clocks.

11.5a is the better driver , i advise you to install it =)

Could be that my cpu is a little faster ? 4.27Ghz ..

My flashed 6950 wont go over 941/1443 without crashing , i wish i could hit your clocks =( id get close to 60fps average i bet . Unfortunatly i got a card that doesnt overclock much , but from the results it seems clock speeds mean nothing ?

if u noticed my gpu model is 8.841.00 yours is 8.831.20
Edited by Xristo - 5/11/11 at 6:44pm
    
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post #10 of 43
Thread Starter 
Quote:
Originally Posted by Xristo;13471711 
Could be that my cpu is a little faster ? 4.27Ghz ..

Only me upgrading catylyst will tell the story
Quote:
if u noticed my gpu model is 8.841.00 yours is 8.831.20

That's just the driver version I believe. Those are the same numbers shown in gpu-z.
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