It is quiet, I have to touch the pump to ensure that it is on. It seems to be spinning at ~2000 rpm if the cpu fan speed reading is correct. Can't tell the fan speed on the rad yet, but it looks slow. Just played FC New Dawn for about 30 min, CPU temp max was 42.
It doesn't have the RGB on the fans, its just the generic 115i PRO. The pump goes through all the colors, but I have no control over that at the moment.
For me USB deview doesn't show it... there is no indication of any new usb attachement even when I plug it into an external port after the machine is running (like it seems to when you plug a usb drive in)
Anyway, it seems to me that if you can slow down your fans it should get rid of the jet engine...