 "Western Digital Black 1 TB Internal HDD" " Western HDD - WD1003FZEX Enterprise Hard Drives CDW.com
"This WD Black drive delivers improved performance that heightens the experience in your PC playground. This performance drive offers enhanced features over the previous generation to maximize system performance, allowing you to have more fun creating while spending less time waiting." 
 "Seagate Desktop HDD 1TB, SATA 6Gb/s" 1TB
"The one drive for every desktop system need, supported by 30 years of trusted performance, reliability and simplicity.
" 
 Official Release Date  Sep 30, 2011 Genre  Hard Drive (Internal) PAX-Code PAX0004324596 Catalog No.  ST1000DM003 Item Code  7636490025914 Product Measures 18cm x 14cm x 6cm