Computers / Storage & Media / Hard Drives / Capacity 640 GB, Buffer Size 8 MB

Western Digital WD6400BEVT  

640 GB storage capacity, SATA2 interface, 8 MB buffer size, Drive type Internal, 5400 RPM spindle speed, 12 ms seek time, 300 MB/s transfer rate

Western Digital WD6400BPVT  

640 GB storage capacity, SATA2 / SATA interface, 8 MB buffer size, Drive type Internal, 5400 RPM spindle speed, 12 ms seek time, 300 MB/s transfer rate

Western Digital WD6400AAVS  

640 GB storage capacity, SATA2 interface, 8 MB buffer size, Drive type Internal, 7200 RPM spindle speed, 300 MB/s transfer rate

Western Digital WDBAAA6400ABK  

640 GB storage capacity, USB 2.0 interface, 8 MB buffer size, Drive type External, 5400 RPM spindle speed, 60 MB/s transfer rate