One interesting thing to note was that the setup was the loudest when used on my (very uncomfortable) lap. The fan spun up the fastest in this situation in order to keep the thing from busting into flames. When placed on a desk, the fan didn't speed up quite as fast, but when used on the Attaché, the fan stayed below the speed-up threshold and when the fans were running, it was actually the quietest.



Link: BCCHardware