I just bought this miner a few days ago from eBay for the sake of getting 30+ GH/s.

http://puu.sh/dENMI/02a9425b2b.png

I hooked this thing up to a 200W PSU and an Ubuntu Server box.
I can't seem to get it past 8Gh/s. The only time I see above 8 is when I first boot up bfgminer and it warns me about the temperature.
I have plenty of cooling for this thing, so I dunno what's wrong.

If someone can help me on this issue, that would be great.