SINGLE BULK PACK WD Caviar Green 3TB SATA 3Gb/s Power-saving 3.5-inch Internal Desktop Hard Drive. Massive capacity WD Caviar Green SATA drives now deliver up to 3 TBs of storage on a single drive. Reduced power consumption WD has reduced power consumption making it possible for our energy-conscious customers to build systems with higher capacities and the right balance of system performance, ensured reliability, and energy conservation. Cool and quiet Drives with WD GreenPower technology yield lower operating temperatures for increased reliability and low acoustics for ultra-quiet PCs and external drives. IntelliPower A fine-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver both significant power savings and solid performance. Additionally, WD Caviar Green drive consume less current during startup allowing lower peak loads on systems as they are booted. IntelliSeek ? Calculates optimum seek speeds to lower power consumption, noise and vibration. NoTouch ramp load technology The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit. Advanced Format (AF) Technology being adopted by WD and other drive manufacturers as one of multiple ways to continue growing hard drive capacities. AF is a more efficient media format that enables increased areal densities.