I am going to put toghether an h20 rig soon with a tdx, mcw60(on a new x1900,not the 78 in sig), and I want it as quiet as possible. A BIP3 could be a PITA to fit, but supposedly they can have 3 fans on low rpms handle anything. But if a BIP2 could handle all the heat @ low rpms anyway ,except maybe during heavy load moments where I might have to turn up the fans I might aswell go w/ that b/c then I could easily fit that in my case.