One of my systems is in a Lian Li PC10 which is beige with a plastic front. There are very small openings in the front which makes for both poor cooling and a lot of noise pressure from the two front fans. I finally got fed up with it and drilled out every other little indentation in the lower front (about 120 in all). Now I can run at the lowest fan setting, my case temperatures dropped by about 5 degrees Farenheit and the system is much quieter. I don't know if it would help more to do the rest, but if anyone else has done something similar, please LMK.