Western Digital WD3200BVVT 320GB 8MB Cache 5400RPM SATA 3.0Gb/s 2.5" Notebook Hard Drive. To make drive selection simple, we've gathered all our popular 5400 RPM WD Scorpio drives under one umbrella we call WD Scorpio Blue. Built to Western Digital's awarding winning quality standards, these drives are available in a full range of performance features.