Thx for your input.
From what I understand about Momentus/hybrid disks, they use the small 'SSD' part to store the more often used files.
So it sounds logical that it will help improve speed with OS files, programs or games, but for data only I am still doubtfull. Of course I have data that I need frequently and maybe those will be read faster, but for all the others only requested once?
Do you know what is stored in the PS3 disk? Only data or also some parts of the system?