Fans on the H100i are absolutely miserable. They spin at low rpm @1800 which is loud. There's no quiet about it anywhere. Swap out the fans for something decent like the new ML series, Noctuas, Phanteks, Nzxt, fractal design v2's, scythe GT's and you'll be good for both cooling and sound. The hyper212 can't match the top end, not even close. The 212 is 180w, the h100i is @300w of cooling potential. While this means nothing to idle loads, at high punishment loads it means a lot. It also means the fan(s) on the hyper212 will spin up a lot faster and get a lot louder much quicker, as the heatsink starts to get saturated and can no longer get rid of the cpu heat effectively.