I'm sitting a Q9505 passive under an NT-06. Working fine.

I wouldn't have chosen to do it, but there was very little info on the SG05 when I bought mine and Silverstone recommended that cooler. I didn't realise til it was too late that it's impossible to get a fan on it in that case. Either way, temps are reasonable (50-ish idle with the case fan on low, 70-ish load with case fan on high).