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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 231

post #2301 of 38739
Mine went 1730 on stock voltage. More than that started artifacting/crashing and voltage didn't help, nor did cooling. It looks like 1500-1800 is the range most chips fall into.
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post #2302 of 38739
Quote:
Originally Posted by wTheOnew View Post

Might not need to bump the memory voltage. I hit 1875MHz before I needed to even look at the memory voltage. Been running 1900MHz at 1.61V for a few days now.
Granted, I don't know if I won the memory lotto or if AMD just chose some really good chips for the cards.


The same here. biggrin.gif

unigine.jpg
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post #2303 of 38739
I've left mine at 1800 on the memory, pretty satisfied with my clocks I'm done trying to go higher for now tongue.gif
    
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post #2304 of 38739
Quote:
Originally Posted by Denim-187 View Post

^
Nice going to the Extreme..... Do u even game bro ? lol

Yes, alot. I played 8 hours Deus Ex HR 8 hours in a row yesterday without a single hiccup, bug, artifact or micro-stuttering. Pure smoooothness. smile.gif
Quote:
Originally Posted by Denim-187 View Post

^
Gorgeous RIG, but why dont you use 8x AA in Heaven? I believe you should thumb.gif
Also i noticed its 1680 x 1050 ?
Can we have a maxxed out version pls? ty

Because there is guidelines to follow in the Heaven top 30 thread of OCN. We all use the same settings, or else, we wouldn't be able to do a top 30. wink.gif

After work, I could do a run with max res and settings just for fun.
    
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post #2305 of 38739
I've finally reached the 1200/1600 plateau on my card on air ... had to up the voltage to 1.237 (it would crash before on those same clocks at 1.117 - 1.2v) ... played 6 hours of BF3 ultra and everything was smooth butter ... max temp 66C with AB fan profile

I have a 1.112v class card (78.3% asic)
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post #2306 of 38739
Quote:
Originally Posted by wTheOnew View Post

Might not need to bump the memory voltage. I hit 1875MHz before I needed to even look at the memory voltage. Been running 1900MHz at 1.61V for a few days now.
Granted, I don't know if I won the memory lotto or if AMD just chose some really good chips for the cards.

1900MHz???? Amazing... if it is real and stable... thumb.gif
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post #2307 of 38739
Quote:
Originally Posted by lothar View Post

I think they didn't adeqately test and verify stability at that clock...
My card can run most benchmarks on 1200-1250 but at much much higer voltage then my casual/everyday/24/7 setting 1180/1690 at 1.137V/1.7V
overvolting higher than mentioned +125mV generates large jump in power consumption and temperatures... you personally experienced that with your PSU (good PSU anyway, dont change it wink.gif )
I think that my "stable" 1225MHz setting or 1250-1260MHz on water block is not worth expenses (money, power, temperature, space)
Buying very good water block (not "EK or Coolance) could give me additional 8-9% of performance - this doesnt make sense for me... better invest these 100-200$ in good SSD
EDIT: oh... I forgot, my card has VID 1.05V and that overhyped ASIC quality value is 82,9%
HardOCP quotes below:
Quote:
One thing we are learning is that none of the video cards we have evaluated so far are coming close to the highest stable overclock on our reference AMD Radeon HD 7970 video card. We achieved a high 1.26GHz stable overclock, but this seems to be the exception at this point in time. With a customized XFX R7970 we have achieved 1.150GHz, and with this ASUS Radeon HD 7970 we have achieved 1.125GHz. It would seem right upwards of 1.1GHz is the norm so far. As we evaluate more video cards we will see how they all line up in terms of overclocking ability.
Quote:
(Kyle's Note: AMD was very forthcoming about the 7970 GPU clocks when we first briefed about the new technology. It explained that almost all GPUs would do 1000MHz, a lot would do 1100MHz, and at that time of talking to AMD, it even had a 1200MHz sample running on its test benches. I have seen a lot of "[H] got a cherry picked card," or something to that effect. Well, I have been doing this for well over a decade, and I have yet to see us get a cherry picked card from AMD, I think it was simply our luck of the draw for a change. 1200MHz does seem a bit excessive, but I would suggest that 1100MHz is going to be achievable for many of our 7970 owners. Good luck and happy OCing!)
http://www.hardocp.com/article/2012/01/25/asus_radeon_hd_7970_video_card_review/9

"Buying very good water block (not "EK or Coolance) "

Who has very good water blocks?
post #2308 of 38739
Quote:
Originally Posted by NorxMAL View Post

"Buying very good water block (not "EK or Coolance) "
Who has very good water blocks?

I wondered what he was referring to, too; or maybe, they don't exist?

I like my EK block. It works.
    
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post #2309 of 38739
Quote:
Originally Posted by NorxMAL View Post

"Buying very good water block (not "EK or Coolance) "
Who has very good water blocks?

Ek water blocks are good. They had some nickel issues a few years back. Swiftech makes good blocks as well.
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post #2310 of 38739
Quote:
Originally Posted by evensen007 View Post

Ek water blocks are good. They had some nickel issues a few years back. Swiftech makes good blocks as well.

I don't have any nickel flakes floating in my res yet.

I do have some white reside lining my tubing walls. Anyone know what that is? This is my first wc venture.
    
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