The divide between gaming desktops and laptops just got a bit smaller. Today Seagate announced that its 2.5-inch, 320GB, 7,200-rpm, Momentus 7200.3 hard drive is now available as an option in Dell XPS laptops and will be available soon in some Alienware laptop models.”Seagate’s new 2.5-inch hard drive delivers up to 320GB of capacity and combines a fast Serial ATA 3.0 Gbit/second interface with 7200-rpm spin speed and a 16MB cache to enable the highest-performance laptops ever. The drive also is offered with