Viperlair has posted a review on the Zalman CNPS9500 LED Heatsink

Overall, we found the Zalman CNPS9500 LED heatsink to be quite impressive, which isn't something we say very often about air coolers. The performance was very good, but when you consider the fact that our video card fan was the only noise source we noticed during testing, that says volumes about Zalman's dedication to silence.

Zalman CNPS9500 LED Heatsink Review