Seagate Barracuda Green 2TB & Momentus 750GB
 

The Barracuda Green 2TB is an attempt by Seagate to crack the low power consumption and excellent acoustics of low power desktop drives from WD and Samsung. The Momentus 750GB on the other hand doesn't have much to prove, coming from the same stock as the surprisingly quiet Momentus 7200.4 and XT.
http://www.silentpcreview.com/seagat...-momentus750gb