to everyone having some issues with hawaii r9 290x cards I recommend my settings:
4.1MH/s x11
-I 16 -g 4 -w 256 --thread-concurrency 24000 --gpu-memclock 1250 --gpu-engine 1025 (that's right INTESITY 16!!! anything higher will cause hashdrop or crash, i found intensity 15 works just as good)
Here's me with two reference asus and gigabyte cards using these same settings. I'm also using 14.6beta drivers and believe it or not crossfire enabled.. If i try disable crossfire with this new driver miner will crash


hitting blocks with only 2 gpus that's some going that. What is your average block turn around with them 2 cards as am considering to turn my gpus back on.