ini perbedaannya gan :
WD Blue : Solid performance and reliability for everyday computing.
WD Green : Cool, quiet operation with massive capacity.
WD Black : Maximum performance for power computing.
WD Red : Designed and tested for RAID environments.
WD Velociraptor : High-performance storage for power users.

perbedaan mencolok terasa pada saat kita memainkan game...
silahkan jika ada yang mau kasih asal jangan di kasih




sumber : http://www.wdc.com/en/products/internal/desktop/