Asus 7950 DCUII v1 shutting down at 63~c

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IDoubtIllRememberThisUserName

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Nov 29, 2013
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Whenever the gpu core hits around 63c my screen goes black and I have to restart my computer. My only workaround for this is to increase the fanspeed to 100% and drop the vddc but it still makes it to around 55c. Are there any other solutions available to me? I really want to try overclocking the card and I'm a bit worried what is gonna happen when summer comes around next year.

Asrock 970 extreme3
Phenom II x6 1045t
Crucial Ballistix Tactical Tracer 8GB 4x2GB
Rosewill rg630-s12
 
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I

IDoubtIllRememberThisUserName

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Nov 29, 2013
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The guy I bought it from off of Amazon cleaned it before it was sent to me, around 2 weeks ago. 63c is still cool for a gpu to be shutting down though, don't you think?
 
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_Vass

_Vass

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Nov 24, 2013
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yes, the danger zone is 85+. Maybe the guy from amazon knew about it?
 
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IDoubtIllRememberThisUserName

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Nov 29, 2013
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I emailed him about it, he said he didn't have any issues with it but he was willing to refund me for it. I honestly don't want to go through the hassle of returning it so I'd like to troubleshoot it at least.
 
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IDoubtIllRememberThisUserName

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Nov 29, 2013
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Used two different power supplies (50A and 28A on 12v rail) and both at the same time to power it. It still shutdowns at 63c regardless of core/mem speeds or voltage. Weird thing tho is when I press into the cooler it increases the temps to 70-80 but doesn't black screen out.

 
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_Vass

_Vass

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Nov 24, 2013
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you know what, try underclocking(or even overclocking). A while ago i read somewhere that unstable speeds may cause driver crashes.
 
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_Vass

_Vass

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Nov 24, 2013
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"the screen turns black and i have to restart the pc", pretty obvious it is a graphic issue (you are right in some way it can always be any part) but this makes op think it is the gpu.
 
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IDoubtIllRememberThisUserName

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Nov 29, 2013
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I was using two 6770s in crossfire before I got the 7950 two weeks ago. Never had issues with the 6770s but had issues day 1 with the 7950.

I also get 5 post beeps whenever I restart my comp after it goes black, which is a gpu error according to Asrock.
 
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IDoubtIllRememberThisUserName

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Nov 29, 2013
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When it crashes at 63c the screen goes completely black like the computer is turned off and I can't see even my mouse cursor. When the driver crashes I can see my desktop and I get a little popup saying driver has crashed and has successfully recovered or my screen just completely freezes but I can still see whats on it. I don't get the latter that often, rarely even but I most definitely get the former as soon as it hits 63c.

I'm working around it by dropping the voltage and increasing the fanspeed but I still don't know what the cause is. The only ideas I have left for trying to fix it are applying some more thermal paste to it or try putting a cooler from one of my 6770s on to it if it will fit. More thermal paste isn't really a fix since 63c is still cool for a gpu but that might give me more oc headroom. So my only guess is that there is something messed up about the cooler or the card itself and I wouldn't know how to fix that. So if you have anymore ideas please let me know.
 
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IDoubtIllRememberThisUserName

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Nov 29, 2013
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I did some more testing and now I'm thinking my clocks might just be unstable for the amount of voltage I'm giving them. I was able to hit 71c before it went black screen.
Core: 631 Mem: 921 VDDC: 1300 Fan speed: 0

Then tried with different clocks
Core:1100 Mem: 1250 VDDC: 1168 Fan speed:39 and 100
Crashed at 71c and 65c

I think I'll redo my overclock and make sure it's actually stable. Either of you know the stock clocks for my card? I went to the Asus website and updated my drivers and bios as soon as I got the card so I never saw the clocks.

 
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_Vass

_Vass

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Nov 24, 2013
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what psu do you have? not delivering enough power when gpu is under load?
Cpu: temperatures? is it overclocked(stable)? look at the cpu and gpu usage while playing a game if the cpu is at a 100% all the time and the gpu is not it might be a pc shutdown to prevent damage to the cpu.
 
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