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HD 5850 glitches with two monitors?

post #1 of 6
Thread Starter 
I got a VTX HD 5850 and run two monitors, both with D-Sub connectors.

One is a Dell with a max res of 1280x1024, the other is an old RM with a max res of 1024x768.

So I have one monitor at 1280x1024 and one at 1024x768.

When I overclock the card on core or memory I get some graphics glitches, notably a little black bar that moves up the screen of the older low res monitor.

When I make both monitors the same 1024x768 I get the glitches too.

I also get glitches in MW3 set up screens, but 3D action seems fine.

Using just one monitor seems to eliminate the problem, and it doesn't seem to matter which output I use from the card.

So, basically, does using two different monitors with different specs sometimes cause glitches?
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post #2 of 6
Quote:
Originally Posted by dogbiscuit View Post

I got a VTX HD 5850 and run two monitors, both with D-Sub connectors.
One is a Dell with a max res of 1280x1024, the other is an old RM with a max res of 1024x768.
So I have one monitor at 1280x1024 and one at 1024x768.
When I overclock the card on core or memory I get some graphics glitches, notably a little black bar that moves up the screen of the older low res monitor.
When I make both monitors the same 1024x768 I get the glitches too.
I also get glitches in MW3 set up screens, but 3D action seems fine.
Using just one monitor seems to eliminate the problem, and it doesn't seem to matter which output I use from the card.
So, basically, does using two different monitors with different specs sometimes cause glitches?

This is caused my memory on the card clocking down, force it to run at max clocks with MSI Afterburner.
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post #3 of 6
Thread Starter 
Ah, that sounds likely, I'll try that - thanks!
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post #4 of 6
Thread Starter 
OK I got afterburner, but I don't see any option to force 2D memory clocks, and I get the overclock glitches with afterburner like I do with catalyst and trixx.

Why would the memory clock change downwards after I have clocked it upwards anyway?
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post #5 of 6
In the MSI afterburner .cfg you need to set something to =2 but i can't remember what
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post #6 of 6
Thread Starter 
Okey dokey I will check that out, thanks.
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