Hello everyone! I hope I can find some answers or if any one else has had this experience. In my case, my motherboard lays horizontally like it would on a test bench. This apparently has created a problem as the Seidon's pump is now massively loud and vibrating audibly. My motherboard is a Maximus VIII Gene with a dedicated W_PUMP header that the seidon is connected to. Since the Seidon pump header is NOT PWM, and only has 3 pins, I was able to use a 3-pin in-line resistor to reduce the RPMs of the pump. I got this (luckily) from a Corsair SP120 Silent Edition fan that halves the operational RPM range. This has (mostly) gotten rid of the issue. Sometimes the pump will make a ticking sound after it has been on for about 4 hours. Cooling performance is not noticeably affected. Has anyone else encountered a similar issue with these pumps? I can try to capture audio/video of it tonight with and without the resistor.