File type: Windows Vista ReadyBoost Cache
The .SFCACHE file extension relates to Microsoft Windows Vista ReadyBoost Cache files. ReadyBoost is a typical Windows Vista feature that allows you to plug in an external device to your machine, say, a USB pen drive.
Such drives (also known as USB flash memory device) are usually connected to a USB 2.0 port on the computer.
The ReadyBoost feature is used in enhancing your system's performance by utilization of flash memory device as cache memory. There is one advantage out of this. It is much faster to cache the external memory devices than your hard drives, there