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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 1395

post #13941 of 38701
Quote:
Originally Posted by Kokin View Post


That's a great score for a stock 7950! I only got that score with my 7950 @ 1200/1700. I'll be doing a reformat tonight or tomorrow to see if I can get rid of some issues that keeps making Steam crash.

tessellation is on normal, not extreme.
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post #13942 of 38701
What stable 24/7 clock should i go for with the Sapphire 7950 OC version?
post #13943 of 38701
Quote:
Originally Posted by Majin SSJ Eric View Post

So far under water I'm having trouble pushing these 7970's past 1250MHz. I'm still on 12.6 and I really need to do a fresh Win7 install but its starting to look like 1300MHz ain't happening with these particular cards... frown.gif

Quote:
Originally Posted by Majin SSJ Eric View Post

I tested each card individually before I water cooled them and they were somewhat similar. Top card is 82.6% ASIC and the bottom card is 85.2%. Both would do 1225MHz on air but were temp-limited beyond 1260mV. Now I can pump 1300mV into them and temps are around 50C but I still get artifacts above 1250MHz...

Use sapphire trixx, you can put more than 1.3 in. Should get you to 1300mhz. thumb.gif
post #13944 of 38701
Already using Trixx but the indicated 1382mV is really 1300mV indicated in GPU-z (I guess because of vdroop). Already got voltages maxed I'm afraid...
post #13945 of 38701
Quote:
Originally Posted by smokyexe View Post

What stable 24/7 clock should i go for with the Sapphire 7950 OC version?
Go as high as you can go.

I'm running 1200/1650 with temps below 75C thumb.gif
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post #13946 of 38701
I don't want to change the voltage, i'll keep that temp in mind.
post #13947 of 38701
Are you guys simply running 3Dmarks or Heaven bench and looking for artifacts to see if you're too high with the OC?
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post #13948 of 38701
Quote:
Originally Posted by Derko1 View Post

Are you guys simply running 3Dmarks or Heaven bench and looking for artifacts to see if you're too high with the OC?
I found that latest Sniper Elite is extremly stressful on GPU, it found my instability way faster than any other game/app, including BF3 and Crysis 2.
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post #13949 of 38701
Quote:
Originally Posted by Derko1 View Post

Are you guys simply running 3Dmarks or Heaven bench and looking for artifacts to see if you're too high with the OC?

I find that the Leo demo is a good stability tester. Heaven, 3D Mark, MSI Kombuster and even the Crysis Benchmark Tool indicated that my 7950 was stable at 1100/1375 with 1100mV. The Leo demo crashed halfway through and I had to raise the voltage to 1112mV.
post #13950 of 38701
Quote:
Originally Posted by Majin SSJ Eric View Post

So far under water I'm having trouble pushing these 7970's past 1250MHz. I'm still on 12.6 and I really need to do a fresh Win7 install but its starting to look like 1300MHz ain't happening with these particular cards... frown.gif

I'm facing the same problem, but mine needs 1.3v to reach 1200mhz. Just finished doing a fresh reinstall of Windows so I'll see what that can do.
Quote:
Originally Posted by PureBlackFire View Post

tessellation is on normal, not extreme.

Ah didn't notice it, but his Tess on Extreme with 1000/1350 seemed a bit low as well.
    
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