Western Digital 640 GB Caviar Black SATA 3 Gb/s 7200 RPM 32 MB Cache Bulk/OEM Desktop Hard Drive – WD6401AALS

Ships in Certified Frustration-Free PackagingWD Caviar Black high performance 3.5-inch SATA hard drives co MBine 7200 RPM spin speed, 32 MB or 64 MB cacheHigh performance electronics architecture features dual processors and bigger, faster caches for maxim