Hitachi Deskstar 7K1000.C 1TB vs. WD Caviar Blue 1TB
 

The Hitachi Desktar 7K1000.C and WD Caviar Blue 1TB represent the latest evolution in mainstream 7,200 RPM hard disk drives. While not as fast as high performance 7,200/10,000 RPM models or SSDs, they are fast enough, reasonably quiet, and very affordable.
http://www.silentpcreview.com/hitachi-wdblue-1tb