This is the world's fastest ATA hard drive. Designed for servers and NAS/SAN systems, the drive of choice for high-performance workstation and gaming systems, the WD Raptor hard drive is a new class of drive that matches SCSI performance and reliability while providing simplified connectivity. Make no mistake about it, the Raptor is for serious speed freaks. If you don't run a server farm or play cutting edge 3D games then this is not the drive for you. However, if you're a power nut who wants - no needs - the fastest ATA drive available then this is your baby, or dinosaur as the case may be.