No noise from the pump, though with the 6 other system fans it's hard to tell. One of the fans in particular is old and makes a lot of noise and the PSU fan isn't quiet either. I need to replace the noisy fan and the PSU.

The thing with AIO pre-packaged water coolers (from what I've read and experienced) is that their performance isn't going to be better than a high-end HSF. Like I said, the Dark Knight II did a better job of cooling my oc'd i7-930. If I could do it over, I'd have bought a second DKII instead of the H110 and gotten better cooling and saved $60.