PC Perspective posted a review on the Zalman CNPS9900 LED CPU Heatsink

Zalman hasn't rested on its laurels and has tried to improve upon an already close-to-flawless design. The Zalman CNPS9900 LED is one of their newest heatsinks, and it actually is a dual-heatsink design that uses ultra-thin fins to minimize weight and reduce airflow resistance.

Zalman CNPS9900 LED CPU Heatsink Review