The WD 2TB 3.5" Green HDD (WD20EARX) is a SATA III, IntelliPower, 64 MB Cache Bulk/OEM Desktop Hard Drive with the following features:

• IntelliSeek – Calculates optimum seek speeds to lower power consumption, noise, and vibration.
• And caching algorithms designed to deliver both significant power savings and solid performance.
• And offer best-in-class acoustics and operating temperature and 3rd generation SATA interface.
• WD Caviar Green hard drives reduce power consumption by up to 40%.
• IntelliPower – A fine-tuned balance of spin speed, transfer rate