Buy a fan for it. They don't run well just with passive cooling.
Until you have a fan on it, limit the clock rate to 400Mhz ~=200GH/s.
Once you have a good cooling fan for it you can probably clock it up to about 545Mhz. don't be tempted to over-clock it unless you're going to bolt on a much bigger heatsink with good thermal compound.
Also, you might want to change the repo you got CGMiner from to the officially supported source, downloads from elsewhere might contain undesireable features.
Kano's github is the only officially supported source:-
https://github.com/kanoi/cgminer/
Also, this table is quite useful for power consumption and hash rates Vs clock rate
Until you have a fan on it, limit the clock rate to 400Mhz ~=200GH/s.
Once you have a good cooling fan for it you can probably clock it up to about 545Mhz. don't be tempted to over-clock it unless you're going to bolt on a much bigger heatsink with good thermal compound.
Also, you might want to change the repo you got CGMiner from to the officially supported source, downloads from elsewhere might contain undesireable features.
Kano's github is the only officially supported source:-
https://github.com/kanoi/cgminer/
Also, this table is quite useful for power consumption and hash rates Vs clock rate