Western Digital is now shipping the next generation of its 10,000 RPM "Raptor" series drives. The new drive doubles the previous capacity to 300 GB and picks up a 35 percent performance increase. Aimed at PC and Mac enthusiasts as well as users of professional-grade workstations that can benefit from high-performance drives, the new WD VelociRaptor is a SATA hard drive built in a 2.5-inch form factor that's encased in a special built-in "IcePack" heat sink. The IcePack keeps the little drive extra cool, WD said.