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Intel i5 3570K bottlenecking 7970 in crossfire? - Page 6

post #51 of 61
Thread Starter 
I think I have identified one of the problems, and it seems like my top card is throttling when temps get over 72-73 degrees. Bf3 also hangs some times when playing hours and looping the sound. It has happened before during heaven and msi kumbostor gpu burn test. Which makes me believe this makes the situation worse. Even though the cards arnt working 99% the added heat from all the components makes the top card go abover 73C when gaming. CM storm stryker doesnt have a fan on the side panel, and with my cards are non reference = all hot air blown into the case. I got to say crossfiring this rigg wasnt really them smartest. I undersetimated heat issues. Not to mention my gigabyte card only has 69% ASIC quality. I dont get any artifacts though, which is strange.
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post #52 of 61
Quote:
Originally Posted by PachAz View Post

I think I have identified one of the problems, and it seems like my top card is throttling when temps get over 72-73 degrees. Bf3 also hangs some times when playing hours and looping the sound. It has happened before during heaven and msi kumbostor gpu burn test. Which makes me believe this makes the situation worse. Even though the cards arnt working 99% the added heat from all the components makes the top card go abover 73C when gaming. CM storm stryker doesnt have a fan on the side panel, and with my cards are non reference = all hot air blown into the case. I got to say crossfiring this rigg wasnt really them smartest. I undersetimated heat issues. Not to mention my gigabyte card only has 69% ASIC quality. I dont get any artifacts though, which is strange.

Let me guess the throttling card is the XFX
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post #53 of 61
Thread Starter 
No, its the gigabyte 7970OC. My xfx has 89% asic quality. I must mention I didnt have no freeze in bf3 with the xfx one, which I bought first. I dont think this heat issue is the main problem, but it makes the situation worse.
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post #54 of 61
Quote:
Originally Posted by PachAz View Post

No, its the gigabyte 7970OC. My xfx has 89% asic quality. I must mention I didnt have no freeze in bf3 with the xfx one, which I bought first. I dont think this heat issue is the main problem, but it makes the situation worse.

ASIC quality doesnt tell the whole story. One of my 7870 hawk's had a 66% ASIC quality and still performed great. Take a picture of inside the case. How close are the cards?

Those fans on the side that pull air in. Cant they be moved so you can direct airflow to the cards?


Edited by Stay Puft - 3/14/13 at 8:12pm
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post #55 of 61
Thread Starter 
Hello, no, not without modding, which means I have to cut my side window. I kind of regret doing crossfire, the extra fps I get isnt worth the extra stutter on 1080p. frown.gif
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post #56 of 61
Thread Starter 
I think my Gigabyte 7970OC is faulty, because at first it had some coil whine I think, dont hear it anymore. But benching it in MSI I got freeze after 4 minutes, despite the temps beeing 68-70C. I used one XFX 7970 with the same OC im using now more or less for 6 months and I never had any freeze in bf3 or similar. Both cards were tested at stock clocks though. Not to mention the gpu usage went from 99% to 60 all of a sudden, dont know why. Maybe this could be one of the problems as well.
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post #57 of 61
Thread Starter 
The Gigabyte 7970OC will be sent back to the retailer and I will be getting my money back hopefully. I wasnt satisfied with CF at all, if it was due to one card not working as it should I dont know. Frankly, the smoothness of one 7970 cant be compared with twp 7970, at least in bf3 multiplayer and 1080p. Case closed.
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post #58 of 61
Quote:
Originally Posted by PachAz View Post

The Gigabyte 7970OC will be sent back to the retailer and I will be getting my money back hopefully. I wasnt satisfied with CF at all, if it was due to one card not working as it should I dont know. Frankly, the smoothness of one 7970 cant be compared with twp 7970, at least in bf3 multiplayer and 1080p. Case closed.

Glad you found the problem
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post #59 of 61
Thread Starter 
Im glad too, apparently my problems wasnt unique, and a handfull of Gigabyte cards suffer from those problems. Microstutter I can live with, but not random freezing and black screens etc, for +350 dollars.

It would be intresting though to see what gpu usage and fps people would get in bf3 multiplayer at 1080p with a i5 and two 7970 that is working. Also running two non-reference cards in a chassis without side fan is a bad idea, I can vouch for that. I dont know what went wrong, but something did.
Edited by PachAz - 3/20/13 at 4:56pm
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Western Digital WD15EADS 1.5TB Samsung 840 250GB Crucial MX100 256GB Alphacool Eisblock XPX 
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Alphacool ST30 360mm Alphacool ST30 140mm Alphacool Eisbecher 150mm Alphacool VPP655 
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post #60 of 61
Quote:
Originally Posted by PachAz View Post

Im glad too, apparently my problems wasnt unique, and a handfull of Gigabyte cards suffer from those problems. Microstutter I can live with, but not random freezing and black screens etc, for +350 dollars.

I've heard good things about gigabyte but still never would buy them over Msi or asus
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