Antec’s notebook cooler

Two low profile 70mm fans provide the airflow but unfortunately they suck air from the bottom of the laptop and exhaust it from the bottom of the cooler. In general, sucking air out is noticeably less effective than blowing air onto a hot surface, as we'll see shortly. Pumping a total of 31.6 CFM (ideally, not practically mind you) at 25.9dBA is definitely noticeable. While it's not that much, decibels are relative measurements and since laptops are significantly quieter than their desktop counterparts (largely in part due to the lack of fans), even 26dBA seems a bit loud.