Ssd cache and ssd boot what's the different

[takumi near]

Hi guy I don really understand what the different the ssd cache and ssd boot
64 gb cache better or 512gb boot ?

 

[The Kasafist]

Hi guy I don really understand what the different the ssd cache and ssd boot
64 gb cache better or 512gb boot ?

This thread may already explain their difference:
http://www.tomshardware.com/forum/291373-32-cache-boot-drive

Hope this helps!