Leave the second card in situ, airflow should remain the same...
You could use some compressed air to blast the dust out of your card... Download the latest drivers.
If your still seeing artifacts in game film it and do an RMA, if stocks of Titan Z are low, you might even get an upgrade.
http://www.scan.co.uk/products/34-acer-predator-x34-curved-ips-nvidia-g-sync-gaming-monitor-ips-hdmi20-displayport-3440x1440-300cd-
Watching this with interest... still no details on refresh
I had a 3007WFP until I recently upgraded to a 3011... All I can say is the color gamut is soo much better!
For example a game I used to play SWTOR had a dark black loading screen which looked 'blotchy' is the best way to describe it on the 3007, was actually had a previously unseen dark...
you've had it 3 years... vacuum the vents/grills to help cooling
even if never comes good again, it sounds like a compont/board failure... worth getting it looked at...
goodluck...2.20am here!
working fine for a few mins... then distorted is good...
sounds like a component/connection failing/failure... it should be very fixable. The panel is the expensive bit... even if you have to buy a duff 305T with a broken panel and swap over the controller boards.
I don't know how...
could be a dry joint or duff component that's heat related... component heats up, the connections expand and fault happens.
try a fast reboot as soon as the fault appears... see if bios screen is corrupted, or switch off monitor for 30 mins with computer still running... does the fault go...
when you wiggle the dvi connection at the back of the monitor, your not looking for improvement, only changes to the picture that would indicate a bad connection/dry joint
tried wiggling the dvi connection a little?
maybe try dropping the rez to 1280x800 (if it's anything like my dell 30", it treats that as a native rez too) Dunno what it would prove if it fixed it... maybe give you ideas if the distortion band doubled in size...