I am going to be building a mATX rig using the Phenom II X4 955 and I was hoping to be able to replace the stock fan to open up the possibility for overclocking in the future. The case I am planning on using is the NZXT Vulcan. Does anyone know of any CPU fans that will fit and work well? Or does anyone know how well the stock fan works, because I just assumed that it wasn't that good. Thanks!