M:6 has posted a review on the Zalman CNPS6000-Cu heatsink.

If you sick of your 50dBA Delta, then you might consider looking at this heatsink. Zalman heatsinks are very unique in their design. Because of the many fins which are spread out there is a lot of surface area for the heat to be dissipated. CNPS (Computer Noise Prevention System) is Zalman's own trademark that makes your computer quieter from 35dB+ to something lower,

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