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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 159

post #1581 of 38701
Quote:
Originally Posted by jamborhgini313 View Post

Powertune is doing nothing for me. Overvolting using AB gets better results for me

powertune is making my GPU more unstable somehow. I think my stock factory can only do 1100mhz core clock 100% stable with all benchmarks and games. I have not raised to voltage yet except powertune. Do I have bad card?
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post #1582 of 38701
Wait... do i need to do +20 in CCC and then do my OC in Afterburner?
post #1583 of 38701
I would leave Powertune alone. Just use AB and keep CCC overdrive disabled, or if you have already enabled, then uncheck the enable overdrive box.
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post #1584 of 38701
guess back to my question what about memory voltage ? How does memory effect the core ?
 
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post #1585 of 38701
Quote:
Originally Posted by UNOE View Post

guess back to my question what about memory voltage ? How does memory effect the core ?

I do believe they are somehow related and not independent of each other simply from my previous statement. BF3,Metro 2033 and Vantage/11 are completely fine at 1125/1575 come 1170/1575 they crash. 1170/1375 gets them going again.
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post #1586 of 38701
Quote:
Originally Posted by UNOE View Post

Okay here is my post again. I asked this 6 hours ago and I was completely ignored. I need some help what else should I use. I want to know what memory tweaks can be done also should I abandon AB and try Trixx or should I use AB and power tune combined ?

You should try to overlock core and memory separately and at first, set memory voltage to 1.7V even if you overclock only core
What temperatures you have?

My settings 1180/1720 on air cooler 1.174v/1.7V
If I bump core voltage slightly I can get 1220MHz, but custom fan profile is needed

By the way ... set AB mode on 1, mode 2 doesnt use idle clock... it is such waste of power and money
Edited by lothar - 1/22/12 at 12:43am
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post #1587 of 38701
Well I do think I'm hitting a huge wall here even with water. I'm at about 1120 core no other voltage helps. I got a extra 75mhz moving to water thats it frown.gif
I don't have regrets though I need water for silence. What is little disheartening was that most the reviews 7970 all hit 1125 on air pretty easy. Looks like the reviews got cherry picked GPU's.
Oh well ...

Edit : I'm peaking at 36c in games 40c on OCCT.
 
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post #1588 of 38701
Anyone else with tri-fire 7970's having issues? I can't get Windows 7 to detect the third 7970 at all on my ASrock Extreme9. I've swapped cards around to eliminate them being DOA, and GPU-Z detects all three GPU's....But It just doesn't show up in hardware manager..Quite strange.
    
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post #1589 of 38701
Quote:
Originally Posted by KidKB View Post

Anyone else with tri-fire 7970's having issues? I can't get Windows 7 to detect the third 7970 at all on my ASrock Extreme9. I've swapped cards around to eliminate them being DOA, and GPU-Z detects all three GPU's....But It just doesn't show up in hardware manager..Quite strange.

Have you tried new driver?

8.921.2 RC11
...

Improved stability when enabling / disabling CrossFireX™ and installing the AMD graphics driver on AMD CrossfireX™ configuration

http://support.amd.com/us/kbarticles/Pages/RC11Driver.aspx
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post #1590 of 38701
338

Got them both 1200mhz stable. Anyone with crossfire please compare with me.

338

Quote:
Originally Posted by UNOE View Post

Looks like the reviews got cherry picked GPU's.
Oh well ...
Edit : I'm peaking at 36c in games 40c on OCCT.

Most definitely cherry picked.
Edited by Denim-187 - 1/22/12 at 1:18am
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