Just changed over my case to a CM Stacker 830 and now my Northbridge fan is failing. Any suggestions on a replacement? Was thinking along the lines of a Zalman passive cooler or even the Vantec Iceberg cooler. Was a bit concerned as to keeping the chipset cool in my overclocked system, although I have a 120mm fan in the case side blowing directly onto the chipset, so I suspect a passive cooler may well have a very good supply of air! Anyone using similar? Would I have any problems? Or should I just change the supplied fan for a replacement from Asus?