So a few days ago I finally received my H220 (NGL it was a bitch to fit in my Fractal R4 w/ Asus Sabertooth Z87 MoBo. Anyway, I'm using Asus Fan Xpert 2 to set the RPM curve. I'm getting 20c idling (which i think is pretty awesome considering I have SLI 770s too), this is running between 20-30%, when it gets from about 30-40% the pump starts to get loud, not massively loud, but you can definitely hear it doing its stuff, is this normal? Thanks!