The Seagate Momentus 5400.2 120GB drive sports a 2.5" form factor intended for use in a notebook computer, but we have other things in mind for it. This drive will be evaluated in a Mini-ITX HTPC system that generates almost zero noise thanks to 100% passive cooling. Silent operation is critical for drives in such a system, and with no cooling available to the drive, they need to operate both cool and quiet. - The Review