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what is this? cant find info anywhere on why its happening 6870

post #1 of 6
Thread Starter 
hey all i just recently got a good deal on a second hand 6870 (i think) i have run multiple stress tests on the card with different testers such as fur mark and heaven benchmark (cant afford the paid stuff) and the card seems to run stable, ive already sorted the crossfire problems on x16x4 by looking for a new mobo but for now im running just the one card (just received one). but when i connect a second monitor too this card through one of the dvi-vga, or mini dp vga connectors the second card does this and other similar things:



now i have ran the same setup on my other 6870 for a few months with no problems but this one doesn't seem to like it, also when i run them in crossfire the problem isn't there even though both screens are still connected to this card. i really don't get it, its so confusing mad.gif i have run stress tests with them in crossfire too and its all stable. if anyone can help i would be happy biggrin.gif, probably just a simple thing in CCC or somthing rolleyes.gif

-cheers thumb.gif
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post #2 of 6
Thread Starter 
i found the problem which leads me to a new one, the card was under clocking its self to unstable speeds causing the dogeyness.

but my new problem is how do i make it stop doing that tongue.gif
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post #3 of 6
That's split screening. It's usually from overclocking or clock instability. However your pic also shows what looks similar to interlacing which is due to hw acceleration bug. Are you watching a video there?
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post #4 of 6
Thread Starter 
Quote:
Originally Posted by tsm106 View Post

That's split screening. It's usually from overclocking or clock instability. However your pic also shows what looks similar to interlacing which is due to hw acceleration bug. Are you watching a video there?

no that was my desktop, i opened msi afterburner and the problem was right there, the core clock was downclocked to 525 and memory clock at 600 for some unknown reason, so i connected the second monitor up and the problem was there on my second monitor so i changed the values back to 900/1050 and clicked apply and the problem went away as soon as i clicked apply so im sure it was that thumb.gif thanks for helping anyways biggrin.gif
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post #5 of 6
Quote:
Originally Posted by lordhinton View Post

Quote:
Originally Posted by tsm106 View Post

That's split screening. It's usually from overclocking or clock instability. However your pic also shows what looks similar to interlacing which is due to hw acceleration bug. Are you watching a video there?

no that was my desktop, i opened msi afterburner and the problem was right there, the core clock was downclocked to 525 and memory clock at 600 for some unknown reason, so i connected the second monitor up and the problem was there on my second monitor so i changed the values back to 900/1050 and clicked apply and the problem went away as soon as i clicked apply so im sure it was that thumb.gif thanks for helping anyways biggrin.gif

Looks like clock instability right there but you seem to know what yer doing?
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post #6 of 6
Thread Starter 
i know to a point biggrin.gif but its been fine now ive changed that, thanks for helping out biggrin.gif
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