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.SFCACHE File Extension

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File TypeReadyBoost Cache File

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Rare Uncommon Average Common Very Common
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
Updated 8/3/2010

FileInfo - The File Extensions Database

This page contains information about the .SFCACHE extension and its known file associations. Our goal is to help you understand what an SFCACHE file is and how to open it.

The ReadyBoost Cache file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and therefore do not publish any information we have not verified.

If you would like to suggest any additions or updates to this page, please let us know!