Don't do this

For some reason, people keep insisting on using the worst PC cases with the Noctua NH-P1. This CPU cooler holds no magical properties and needs the right conditions to operate properly. The enormous heat sink doesn't even fit inside the SilverStone SUGO 16: "There were a couple hiccups though. The NH-P1 being so massive actually interfered with a rubber stand for the PSU on the floor of the case, so I just ripped it off and cleaned up the adhesive residue."  

Source: reddit