My Gigabyte Radeon 280x had 1.7mh/s and after you bin it went to 1.9mh/s. Its still pretty low. Settings: -g 2 -w 256 -I 18 --thread-concurrency=8192 --gpu-engine=1090 --gpu-memclock=1300

My 5870 rig doesn't seem to work. The miner hashes but gets no accepted work with hw errors. Its funny that 7870 (same kind) works fine giving 640mh/s per card. Using 14.4 cata. Any ideas?