Not bad at all even when on full - if you have sound up or headphones on you won't even notice. The one thing that does bother me though about the fans is that

Not bad at all even when on full - if you have sound up or headphones on you won't even notice. The one thing that does bother me though about the fans is that sometimes they repeatedly go on/off in rapid succession over and over and over. I think whatever game is running must just be RIGHT at the thermal threshold so it keeps going under/over and triggering the fan to turn on and then shut off. I wish in these cases it would just switch on for good and stay on low rpms instead of all the on/off.