GTX 780 SLI possible hardware issue? Need Help

[wsarahan]

Hi guys how are you?
I`m a little scared about my video cards
Sometimes it just start appearing a lot of artefacts in the screen gaming, no overclock, nothing
I have here 2 GTX 780 SLI, i only tested at Payday 2 game till now, i can play for hours without a problem, and then it starts, if i close the game and start again no issues, or if i use 3dmark no issues either
i have the TDR issues here related to the Nvidia drivers, that will be fixed in the new one that will be released in the end of August
But i`m really sad thinkinbg that some of my cards might have a problem
Is there a way to test it without putting off the machine one or another?
And what i described means a hardware issue?
My system is an i7 3770k @ 4.5
PSU CoolerMaster SilentProGold 1200w
The cards are EVGA SC Edition

Thanks

Edit1: Well guys, runned the Valley Benchmark in the max possible for 3 hours and nothing happened, runned with SLI off but with both cards attached so just the first card was running right?
No issues at all, what should i do now?

Thanks

Edit 2: Did the same with the bottom card and no issues again

Edit 3: Trying Furmak now, till now no issues, temps normal, with SLI off but both cards attached, is it really enough just to disable SLI and switch the monitor cable to test each card individually?

Thanks

 

[Jay85]

Maybe your cpu overclock is unstable? I use to get artifacts and hard lockups when my cpu overclock was unstable. Tweaked it and its been fine since. Also had a problem with drivers as there was a thread about it on here. Reverted back and again its been fine since.

 

[wsarahan]

Maybe your cpu overclock is unstable? I use to get artifacts and hard lockups when my cpu overclock was unstable. Tweaked it and its been fine since. Also had a problem with drivers as there was a thread about it on here. Reverted back and again its been fine since.

I think I`ll wait the new driver that promisse to fix the TDR issue and after this try the OC again bumped the vcore a little

Using 1.23 LLC Turbo now for 4.5, do you think it`s enough?

Thanks

And here my tests:

Valley benckmark: SLI off both attached in the MB, 3 hours wich card no issues or artifacts

Furmark: SLI off both attached in the MB, 3 hours wich card no issues or artifacts

3D Mark 13 (I have the full version) - SLI off both attached in the MB, 5 hours wich card no issues or artifacts

 

[wsarahan]

Tried the new driver bout something is letting me crazy here:

when i`m running IBT with any vcore i`m receiveing black screens and after a couple os fesonds the video drive comes back working and i received that maessage that the video driver stopped working and came back sucessufly....... no BSOD nothing just this message running IBT

Any possible reason?

Thanks

 

[dakotha]

To me, it sounds like your overclock is not stable. Try default settings on CPU to rule out the culprit and start from there?

I wouldn't trust IBT anyway while overclocking, but that's just me . I need LinX 20 passes on max memory usage + at least 8 hours of Prime95 27.9.

Sometimes passing test programs has also resulted in almost immediate crash in any game.