Corsair is aware that some number customers are experiencing a “grinding” or “buzzing” noise when using some of our Hydro Series coolers (specifically H60, H80, and H100). This does not affect every unit and has been very difficult to track down. After extensive lab testing, we’ve been able to re-create the issue on a small number of units in certain situations. We are working on a root cause analysis and will have a solution shortly.
In the meantime, rest assured we are aware of the issue and will post a solution here. Corsair is dedicated to ensuring the highest possible customer satisfaction, and we appreciate your patience with this problem. As mentioned, now that we have recreated the issue in a lab environment, we can work on a fix and provide it to you once it’s been verified ready for production.
Please post in this thread if you have had your Cooler replaced and still have the noise and I will send you instructions to get the unit replaced.
EDIT: 07/02/2012 Released from Cooling Product Manager:
“Corsair has now tracked down and fixed a rare and hard to reproduce issue on some of our Hydro series coolers, specifically the H60, H80, and H100 when used in combination with certain power supplies in certain circumstances. The failure will present itself as a buzz or hum, similar to a hard drive seek noise, and may disappear and reappear at random times. This issue affects a very small number of units, and typically is more prevalent on power supplies that provide higher than +12.2V on the +12V rail, which explains why some users have experienced multiple units with the same issue – they’re plugging them into the same power supply.
Regardless, this has since been corrected and we are now shipping units that do not experience the issue. If you’ve got a noisy H100, H80, or H60 unit, and the noise is coming from the pump (not the fans), we’d like to offer you a RMA. Please Contact us by using the link on the left and request an RMA to start a replacement with a known good unit.
Thank you, and we appreciate your patience as we corrected this issue. “