I have a Noctua too. When I saw the box it comes in I thought no way in hell am I going to fit it in the case with everything else. It's massive but I have about 5mm gap between this and the 6950. It all fits well , and keeps everything cool. My ambient air temp is over 30 degrees Celsius in summer so I need a good cooler. When under load it only goes to about 40 which is great.