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Sapphire 6970 Crossfire

post #1 of 8
Thread Starter 
Hey,

I've recently purchased 2 Sapphire 6970's and Crossfired them. I'm having troubles overclocking them. When ever I overclock (this includes over volting) I go into Crysis and it works fine for about 2 minutes, then the video driver will crash and restart. Now I've been told that my PSU is sufficient enough to run 6970 crossfire overclocked aswell as my overclocked CPU. I've used the PSUCalc that was created by haedrus2129 and put in all my system spec. It comes back with a result of 830W.

System Specs:
i7 860 2.80GHz @ 3.80GHz
EVGA P55 Micro SLI
12GB DDR3 RAM 1333MHz
Sapphire 6970 x2
500GB HDD
Corsair H60
Antec 750W PSU TruePower
Antec 902 Case

Just stock cooling on the graphics cards. I also have my computer in a good position for case airflow.

I was thinking of getting a Corsair HX-1050.

Just tell me what you guys think.

Also before I added the second Sapphire 6970 I could seem to overclock fine without artifacts or crashing.
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post #2 of 8
Add more voltage or lower the clocks to your cards. High temps will also give that error, giving an unstable OC.

The psu is more than enough.
    
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post #3 of 8
Thread Starter 
I've got it at a stable OC right now. Is it normal for the temps to get upto 80 degrees? I'm running Crysis maxxed with 8x AA so that could be whats heating it up.
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post #4 of 8
You're not stable if you're getting this recovery driver error. 80'C is perfectly fine.
    
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post #5 of 8
Thread Starter 
Yeah the fans get pretty damn loud, both cards get to 50% fan speed. But then again this is just on Crysis, which is probably expected.
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post #6 of 8
Quote:
Originally Posted by Nillus View Post
I've got it at a stable OC right now. Is it normal for the temps to get upto 80 degrees? I'm running Crysis maxxed with 8x AA so that could be whats heating it up.
It depends on what is the fan speed, OC settings and what are you using to overclock?
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post #7 of 8
what model of the sapphire 6950's are you running?
you may get a slightly lower OC running two in CF than you did with the single card.
Edited by Red1776 - 11/6/11 at 4:09am
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post #8 of 8
Thread Starter 
Quote:
Originally Posted by Ken1649 View Post
It depends on what is the fan speed, OC settings and what are you using to overclock?
I was using Sapphire TriXX but was told to switch to MSI Afterburner. I have the fan settings on Automatic but they usually get upto around 45-50% when running Crysis maxxed out. For OC settings I was using Core @ 950 / Memory @ 1450 / Voltage 1.225.

I don't really know what type of settings I should be using. If you have any idea on a nice stable OC just let me know.
Quote:
Originally Posted by Red1776 View Post
what model of the sapphire 6950's are you running?
you may get a slightly lower OC running two in CF than you did with the single card.
I'm using Sapphire 6970's. Not using 6950 flashed cards.
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