Compared to
old - style
hard disks, which use physical, moving parts and platters, SSDs are purely digital, with no moving parts at all, and they are much faster than traditional
hard drives.
In a way, it's kind of like Windows» built - in
Disk Cleanup tool, which frees up space on your
hard drive by deleting useless files —
old temporary files created by programs, temporary Internet files for Internet Explorer, Windows error report logs, and more.