Ultra320 has fully matured into the fastest SCSI interface speed, HP continues on in it's tradition of being there to lead the competition in delivery of the latest capacities available. In addition to maintaining industry standards, HP adds a new capacity point, the 146GB 15K U320 Universal drive to its product portfolio. As in previous generations, the 15K drive technology continues to provide unparalleled levels of performance improvement over existing 10K HDDs. The HP 15K HDD still requires no additional cooling or power consumption than the 10K HDD family. The 15K drives access data an average of at least 26% faster than existing 10K drives. In sum, the end result is improved productivity and profitability. Available models include: 3.5" 10K - 300GB, 146GB & 72GB and 3.5" 15K - 146GB, 72GB, & 36GB.