Western Digital 1 TB Caviar Green SATA Intellipower 8 MB Cache Bulk/OEM Desktop Hard Drive WD10EAVS WD Caviar Green hard drives reduce power consumption by up to 40% IntelliPower - A fine-tuned balance of spin speed, transfer rate and caching algorithms IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise, and vibration Capacity of 1 TB holds up to 200,000 digital photos, 250,000 MP3 files, and 120 hours of HD video