The Western Digital Caviar 1TB hard drive is designed to provide you with space and performance. Store and retrieves files quickly and reliably. The 1TB capacity stores loads of videos, pictures, songs, and games, and you can do all this without unduly raising your power bill. As hard drive capacities increase, the power required to run those drives increases as well. WD Caviar Green drives make it possible for energy-conscious customers to build systems with higher capacities and the right balance of system performance, ensured reliability, and energy conservation.