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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 471

post #4701 of 38701
3DMark11 results for 7950 @ 1250/1750 at 1.281v/1.681v



I think this is the highest OC I'm going to go. At the moment, I have the highest graphics core with a 2500K and a 7950. I'm going to go test in Heaven and play some BF3 to get a better analysis of the temps and such.

Also guys, is it a good idea to have a stock profile in AB that you can set whenever your PC is idle, or playing a very un-intensive game? So you can save some stress on your GPU when it is not needed.
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post #4702 of 38701
ASIC: 76%
Core: 1000
Mem: 1450
Voltage: 0.993V

Any higher core or mem and it locks up. Thinking I'll bump the voltage at some point.

For future reference, don't try to overclock while in EyeFinity, that's just buckets of awful.
     
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post #4703 of 38701
How'd I do? 1100/1575

7950.jpg
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post #4704 of 38701
Just did a Heaven 2.5 test at 4xAA/16xAF (at 900p, just bought a VH236H, gets here on Friday, can't wait!), and everything else at default with a result of 98.7fps. I like this overclock better than the one I had before, haha.

Temps have went way higher though, with my old fan profile, they jumped to 76C during stage 17 of 26. Drastically changed it though so heat shouldn't be a problem now.

I'm a bit worried that 1.281v for core and 1.681v for memory is dangerous though. Can anyone tell me it is not so I can go to sleep peacefully, haha.
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post #4705 of 38701
I got 1210mv at 1200core. that voltage is very high. I wanted 1300mhz on the core. no way I can get it now lol. maybe sapphire was not the best? what brand is getting highest PC's?oc's
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post #4706 of 38701
I went ahead and put everything back to the way my old OC was. This new OC is dominating, but 1200/1600 was already dominating enough. So I'm at 1.231v core, and stock memory of 1.6v with 1200/1600 again.

When I get my 1080p monitor, if I'm not getting the results I want for some reason, I'll bring the other OC back and see if I can get the voltage down a little.
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post #4707 of 38701
Quote:
Originally Posted by Exostenza View Post

How'd I do? 1100/1575
7950.jpg

Not bad thumb.gif Get it up another 100mhz on the core and see if you can hit 85fps avg biggrin.gif
    
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post #4708 of 38701
wow gigabyte 7970 wind force review hit 1305core at 1.273mv. maybe I should of gotten that lol. is 1.3v the Max for these cards on air? accident ly posted this in the wrong post. so reported here in correct spot.
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post #4709 of 38701
You guys clocking with the newest drivers and CAP ?
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post #4710 of 38701
Quote:
Originally Posted by Invisible View Post

Just did a Heaven 2.5 test at 4xAA/16xAF (at 900p, just bought a VH236H, gets here on Friday, can't wait!), and everything else at default with a result of 98.7fps. I like this overclock better than the one I had before, haha.
Temps have went way higher though, with my old fan profile, they jumped to 76C during stage 17 of 26. Drastically changed it though so heat shouldn't be a problem now.
I'm a bit worried that 1.281v for core and 1.681v for memory is dangerous though. Can anyone tell me it is not so I can go to sleep peacefully, haha.

cool to know the memory volt can be stable up higher. I'm sure neither if those is volts is super dangerous. I was wondering how far to try to take the memory volts myself. Right now it looks good at 1550 mhz/ 1.65 mem volts. I think this is where hwinfo and VRM temps will come into play as we try to push these. Personally i was seeing around 66 C when overvolted on the VRM which should still be fine (I think?). Seems like the sapphire oc does have some decent airflow/cooling on those vrm and ram. If anyone else has news about the max safe mem volts I am curious as well.

btw very nice OC and scores!
Edited by sbuck333 - 2/22/12 at 8:50pm
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