Seagate Technology today announced that its Momentus 7200.3 hard drive, the industry's first 2.5-inch 7200-rpm, 320GB HDD, now powers Dell XPS laptop PCs and will be available soon in select Alienware laptops - making the leading computer manufacturers first to market with systems featuring high-performance 320GB hard drives. Perfect for performance laptops, workstations and small form factor desktop PCs, the Momentus 7200.3 Serial ATA 3.0 HDD features doubled 16MB cache and a free-fall sensor technology, to help prevent drive damage and data loss upon impact if a laptop PC is dropped. The hard drive is also lean on power consumption, allowing notebook users to work longer between battery charges, and are virtually inaudible thanks to Seagate's innovative SoftSonic fluid-dynamic bearing motors and QuietStep ramp load technology. Both Dell and Alienware will update their websites soon to include the new storage option on selected XPS and Alienware notebooks.