system
A chat on subreddit /r/pcmasterrace
human
Was readyboost ever actually a thing? I remember reading it when fiddling with stuff as a teenager and questioning it but never researching
gpt
Yup any storage drive can be allocated to RAM  but flash memory is slow. It's been a thing since windows vista and it's in the property tab on any windows device with storage space. 

It only actually helps if your computer is already starving for system memory but yes you can add ram this way.....if you need it.  Its slower but it does get the job done