I can dig up my settings in a bit. With unlocked shaders these cards can hit 500khs plus, but I have them locked.
I totally believe it. My first one of those I just casually put to 900/1300 and it pulled nice kh/s. Then it bricked one day and I RMA'ed it. GREAT cooling but loud. Perfect card to put into a basement rig. Be advised that if it is the exact same model as mine it does take up 3 slots. It is good hes throwing in risers.
Yes, these cards do take up 3 slots, pretty sure we have the same model.
I never noticed the noise, mainly because they never got above 50% fan speed. They really only got to 70 degrees maximum, even when ambient temp got above 90 degrees.
How hot do yours get?
I put the fan up on purpose. Mine never got hot, but I don't remember exactly because it was so cool and I didn't need to pay attention.