Cache SSDs are part of Intel's Ultrabook specification. These drives look like regular solid state drives but must run alongside a separate hard drive, and they offer faster PC boot-up times. IHS expects about 22 million of the 25 million or more cache SSDs (or about 88 percent) this year to be built into the super-thin laptops known as Ultrabooks.
Cache drives will also be a PC upgrader's dream, giving a cheap SSD boost with really little hassle.
All you'll need to do to install an SSD cache drive (such as the Corsair or the Crucial cache SSDs announced at CES 2012) in a desktop system is install the device in an available SATA port of the computer. No need to reinstall the operating system or your documents.
The bottom line: Expect more performance via more value-oriented drives.For more blogs, stories, photos, and video from the nation's largest consumer electronics show, check out PCWorld's complete coverage of CES 2012