Western Digital 1 TB Caviar Green SATA Intellipower 32 MB Cache Bulk/OEM Desktop Hard Drive WD10EADS Ships in Certified Frustration-Free Packaging WD has reduced power consumption by up to 40 percent compared to standard desktop drives GreenPower technology yields lower operating temperatures for increased reliability and low acoustics for ultra-quiet PCs and external drives A fine-tuned balance of spin speed, transfer rate and caching algorith ms designed to deliver both significant power savings and solid performance.