i installed that exact same drive into my ps4 and it made load speeds slightly better but not a huge difference. It was under 10% difference for AC4 and Need for Speed, the two games I tried with each drive, like going from 45 seconds to load a level to 41 seconds, that kinda thing.
Frankly at this point I say don't bother, there are simply not enough PS4 games for any normal person to need more storage and the SSD cache makes no noticable difference to most gamers. It won't make much of a difference in Destiny at all, the load times are pretty long but once you are in a level there isn't any more loading and loading "faster" won't give any advantages in PVP like BF4 (the level doesn't start until everyone loads in). In a year or two when you may actually fill up a hard drive then it might be a good time to do it, but by then there will be 2 and 3TB ssd cache drives.
