TechwareLabs has published a review of the Nexus Hush Kit.
A quote from the article:
>> Nexus Hush Kit Review
Do you have a need to silence your PC but you wish to retain the cooling power of those loud fans? Nexus has created a kit called the "Hush Kit" which is specifically engineered to give you good cooling while lowering the noise output to virtual silence. We test out this kit and let your know if its worth it or not.
>> Nexus Hush Kit Review