I have a Intel RTS2011LC and use it on a 4770K with the intel DZ87KLT-75K motherboard.
I have a rumbling / rattling sound that comes from the water cooler.
I have tried placing the box on its side, and the noise goes away, when I put the box upright the noise comes back.
The noise is not there all the time, it comes and goes, sometimes it is quite for 5mins before it rattles again.
When the computer is at 100% cpu usage, and the rattle starts the cpu quickly jumps in temp.
Any thoughts?