I can feel slight movement when I touch the tubes of the AIO, but honestly the pump doesn't make any sort of sound it's oddly quiet. I can feel it vibrate a bit. Honestly I need a sort of frame of reference because I don't have much experience with water coolers. This machine is primarily used for video production work and usually maxed out around 60 to 70C - but as you can see 30% load at 93C is quite concerning.