Western Digital Caviar Green 2 TB Desktop Hard Drive WD20EARS is a hard drive that has the most reviews on amazon.com. and Western Digital Caviar Green 2 TB Desktop Hard Drive WD20EARS is the hard disk that is popular at amazon.com.
it's because the WD Caviar Green hard drives Reduced power consumption by up to 40%, A fine-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver significant power savings Both, IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise , and vibration, 2TB capacity holds up to 400,000 digital photos, 500,000 MP3 files, and 240 hours of HD video, and Ships in Certified frustration-Free Packaging.

• The best in high definition video playback.
• Most Good for Playing 3d Games.
• Rich Features :
  • the Intel Turbo Boost Technology 2.0.
  • Using Eight-Way Multitasking With Hyper-Threading Technology, that improve speed and Computing Productivity.