With everything up and running I was impressed with the P280’s noise level. I expected it to be quiet based on past experiences with the P line but without sound deadening on the side panels I wasn’t sure that it would perform as well as past models. Cooling performance wasn’t bad at all, having two fans up top really does a good job keeping the air flowing. I did notice a slight rattle with the top fans set to high, turning the speed down a little corrected this. Having said that, this is an issue that you shouldn’t have to worry about in a case of this price range and it’s a little disappointing. It seems to be an issue with medium quality fans paired up with a slightly flexible top panel that causes the problem. A fan from someone like Noctua wouldn’t vibrate, or a little more support on the top panel would also correct this issue.