"Drive-caching is not a relatively new concept, but one that has seldom been explored. Seagate did it with their Momentus drives, offering the speed of an SSD and size of a hard-drive in one, and now Corsair have jumped in by splitting the hard-drive from the equation and presenting only the SSD portion. The end result is the same: providing the performance of an SSD and storage of a hard-drive by reserving, learning, and adapting to user patterns and programs for rapid access.
As SSDs drop in price, and hard-drives show no signs of returning to their former price-point, consumers are rapidly creating dual-storage setups. A small, fast SSD for booting and capacious hard-drive for storage are a tantalizing mix, and Corsair realized this."
