We may add overclocking abilities in the future.
Meanwhile, here are some conservative overclock settings to start with using AfterBurner:
Power 85%
Temp 77
Core Clock +80
Mem Clock +500
Of course you may go higher than that, depending on how lucky you are

Many thanks! I was able to go higher than that without any problem. Profitability is very good (considering the fact that this isn't the best period for mining.) Lets hope for the best in the future!!!