WD Raptor has evolved! PC enthusiasts' favorite 10,000 RPM SATA drive is now faster than ever and available in capacities up to 300 GB. Engineered for maximum speed, WD VelociRaptor combines a 3 Gb/s data transfer rate and 16 MB cache, to deliver performance that's up to 35% faster than its speedy older brother. With 1.4 million hours MTBF, these drives have the highest available reliability rating on a high-capacity SATA drive and are designed and manufactured to enterprise-class standards to provide enterprise reliability in high duty cycle environments.