Engineered for maximum speed WD VelociRaptor, the member of the unique Western Digitals class of 10,000 RPM SATA hard drives, combines a SATA 3 Gb/s interface and 16 MB cache to deliver performance thats up to 35% faster than its speedy older brother. At the same time, WD VelociRaptor consumes 35% less power than the previous generation of WD Raptor. Rotary Acceleration Feed Forward optimizes operation and performance when the drives are used in vibration-prone, multi-drive chassis. Ideal for blade servers, performance enthusiast systems, workstations, and low-end servers.