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.SFCACHE File Extension

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File TypeReadyBoost Cache File

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CategorySystem Files


File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.


Cache file used by Windows Vista and 7 that may be created on a flash memory device; adds additional memory that Windows may access as virtual RAM, which may help improve system performance.

More Information

ReadyBoost can be enabled by right-clicking the icon of a flash memory device and selecting "Properties." Then click the ReadyBoost tab and check "Use this device." This will create a temporary file named "ReadyBoost.sfcache" on the flash disk.

Programs that open SFCACHE files
Microsoft Windows LogoWindows
Microsoft Windows
Updated 8/3/2010