Western Digital Caviar Blue WD3200AAJS

The Western Digital Caviar Blue WD3200AAJS is a 320GB desktop internal hard drive that lies in the mid-range of the Caviar Blue line of desktop drives. Of the 320GB drives in the Caviar Blue line, the WD3200AAJS is the version with SATA 3 Gb/s, rather than the WD3200AAKX that has the newer and faster 6 Gb/s SATA revision, or the WD3200AAJB that uses the older PATA 100 MB/s interface.

As the Caviar Blue line is the cheapest of all Western Digital desktop drives, it is targeted people with generic, everyday computing usage, rather than users who want high performance and speed. There is another SATA 3 Gb/s 320GB drive (the WD3200AAKS) in the Caviar Blue line with a twice as large cache, for people who want more speed but don't have the newer interfaces.