I didn't notice any overheating. As far as noise is concerned, I noticed something rather interesting: when I use the charger supplied with the device, the fan comes on more often. If I use a less powerful (and therefore slower) but compatible charger, the computer is very quiet. (I haven't managed to find a coherent answer on the internet to the question of whether a slower charger can damage the computer. If we draw the analogy with electric cars, this should not be the case).