"True to their company slogan "leading the world of quiet computing solutions", Zalman identifies each of their silent CPU coolers with CNPS in the model number. CNPS stands for Computer Noise Prevention System. The new 10X represents Zalman's first foray into the more conventional rectangular-fin tower style. There are two models to choose from, a basic no-frills Quiet version and the more advanced performance-oriented Extreme, both of which we will be looking at today."
FULL STORY @ OCIA (http://www.ocia.net/reviews/zalman10x/page1.shtml)