Samsung Spinpoint M60 is a high performance HDD featuring 5400RPM & onboard cache of 8MB buffer. It targets mainstream to high-end notebook PCs, & small form factor desktop PCs. Features Worlds First Three-platter Half-terabyte for Note PC Half-terabyte Mobile Drive: Three-disk Solution in Standard 9.5mm Z-height Superior Performance Low Power & Low Acoustic Noise Special Features for Premium Notebook PCs Brand SAMSUNG Series Spinpoint M6 Model HM500LI Packaging Bare Drive Performance Interface SATA 3.0 Gb/s Capacity 500GB Cache 8MB Average Seek Time 12ms Average Latency 5.6ms RPM 5400 RPM Physical Spec Form Factor 2.5"