Hey, Some reviews seem to mention that the retina iMac is usually quiet, but the fans can 'definitely be heard' when they kick in. Please share some experiences on the topic if you have received you retina iMac and have done some heavy computing like a long export, rendering or gaming on it. Something that really puts the system to its limits continuously for hours (or at least 30 mins). I'd be especially interested to hear from those with the i7 processors and 295x GPU. Also any experiences regarding 1TB fusion drive noise is welcome.