Western Digital WD6401AALS 640GB Caviar Black SATA Desktop HDD

Ships in Certified Frustration-Free Packaging

WD Caviar Black high performance 3.5-inch SATA hard drives co MBine 7200 RPM spin speed, 32 MB or 64 MB cache

High performance electronics architecture features dual processors and bigger, faster caches for maximum read and write speeds.

StableTrac -- The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking

640 GB capacity holds up to 128,000 digital photos, 160,000 MP3 files, and up to 77 hours of HD video; 5 year limited warranty

WD Caviar Black high performance 3.5-inch SATA hard drives co MBine 7200 RPM spin speed, 32 MB or 64 MB cache

High performance electronics architecture features dual processors and bigger

StableTrac -- The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters