With eyefinity, always go for a card that has identical inputs.
Also, DMANNA Try putting two of your screens on the Display Ports, that should give you 2 that work well again. Though I really don't understand why the cards just cant output the same Hz on every output. That would solve the issue right there. The timings are wrong for 1 or more monitors.
So I went and orderd 2 identical display ports, 3 identical DVI-D cables and did not solve problem. I even just tried to use the 2 monitors that are displaying the same Hz and I still get tearing.
When d3doverrider is active in the back ground, I get NO Screen tearing but only if the FPS is maintained at 60 FPS.. as soon as the FPS dips below 60, even if its 59 I see minor tearing on all 3 screens. As a trouble shooting method what is this telling me? 60 fps perfect image.. below 60 fps tearing. I guess it means V-Sync is working but Triple Buffering is not working? Anyone have any idea's?