I realised recently that my new PC was just going to get too hot this summer, so I decided to go ahead and buy a new case with better cooling function. I bought a Cooler Master HAF 932 and amd very happy with it so far. It totally dominates the office, but is quieter and cooler than the previous case. The previous case had three 120mm case fans, which while using the quiet Noctua fans, would still give off more noise than the fans in the HAF 932, because the new fans are much larger and spin more slowly. The HAF 932 has three 320mm fans and a 140mm fan at the back. Awesome cooling.