Little known fact: Windows 7 CAN use an internal SSD drive for ReadyBoost.
Example scenario where it makes "some" sense: You have an existing Windows 7 desktop that could use a performance boost, but you don't have time to reinstall/migrate the boot drive to an SSD.
* Install a cheap SSD, and configure it for ReadyBoost (just right click on the drive the same as you would a USB Flash drive). NOTE: ReadyBoost will only use 4GB of the drive.
* Move your virtual memory paging file from the boot drive to the SSD.
* Move any data files you are working with actively to the SSD (such as source code if you are developer).
Total time to implement: About 10 minutes
Performance improvement: Noticeable/useful but not magical
4 years ago