Lucas123 writes: WD today released the Black Dual Drive, offers laptop users the ability to have both an SSD and a hard drive through a single interface. The company claims the WD Black Dual Drive is 17 times faster than a traditional hard disk drive and costs about three times less per gigabyte than an SSD. The new drive only works with Windows hardware and will retail for $299. Benchmark testing, however, shows the SSD portion of the drive has less than stellar performance with a maximum read rate of 269MB/s and a write rate of 147MB/s. By comparison, the Samsung 840 EVO has a max read rate of 508MB/s and a write rate of 488MB/s.