I just checked the size of BF4 on my PC, 78GB just for BF4, my problem is that I have about 3TB of games, but could certainly dedicated a drive just for BF4, that is where all my time goes gaming.
I linked a 500GB earlier, which isn't too bad. You could put a few games you play frequently on there. The idea isn't for the SSD to replace your mechanical drives. The tech isn't quite there... yet.
I just checked the size of BF4 on my PC, 78GB just for BF4, my problem is that I have about 3TB of games, but could certainly dedicated a drive just for BF4, that is where all my time goes gaming.