Just pulled out HDD in my hp envy laptop and installed 500gb Samsung. Already had 240 intel msata using 64gb as Rapid storage cache. Any point in that now?
If I read your post correctly, sounds like you just replaced your mechanical hard drive with a 500gb Samsung SSD. If that is the case, then there is nothing left to use caching on.
I still use it on the desktop, where I generally always have at least one mechanical drive for bulk storage. Certainly can't hurt to use SSD caching for that.