I have tried everything, 100 different launch configs and overclocking all the way from 925 to 1200 core clock and 1375 memory clock to 1800 but i can't get over 580kh/s.

cgminer and reaper, it doesn't make a difference. SDK 2.8 with drivers 13.3 beta 3, 13.4 and 13.5 beta 2 drivers. Nothing seems to make much of a difference.