So the saga continues from here: https://bitcointalk.org/index.php?topic=84387
I ended up RMA'ing one of my cards due to it being faulty even just gaming on it's own or mining.
I got a replacement and it was okay for a little while...then later I found the main card ran full speed, the crossfire'd one would run at about 40% regardless of the clock settings. About two weeks later I just constantly had the computer jump to a black screen with the displays going into hibernate with the system still on just not running Windows with the GPU fans going quiet but still running at this point.
Currently just going single card everything is all good... 980Clock/1030Mem @ 72C - 550MHash and I'll swap the card tomorrow and repeat the process but I need both of them going since well...that's why I spent so much on them.
I have an OCZ Z1000 PSU with the rail config like so: +3.3V@25A, +5V@25A, +12V1@83A, -12V@0.8A
Using GPU-Z with 1 card only:
VDDC is 1.1V
MVDDC(no idea what this is): 0.006V
VDDC Current: 147A
VDDC Current in: 12.4 (avg)
Now I'm assuming VDDC Current In is the amps the card is drawing...I'm not sure where it's getting a current reading of 147 since the PSU itself should only be doing 83 on that rail. Could my PSU be faulty or is there some treachery afoot?