I used TRIXX https://www.sapphireselectclub.com/ssc/TriXX/

GPU Clock - 1082
Memory Clock - 1498 
Voltage - 1.168

http://i.imgur.com/jyvNRnh.jpg

CGMINER start-mining.bat EXAMPLE:

cgminer --scrypt -o http://servername:port -u user.workername -p WorkerPassword -I 13 -g 2 -w 256 --thread-concurrency 8192 --gpu-powertune 20

should give you about 720-740Kh/s