I hope you know that an ssd will not improve actual game play and it will not improve FPS. The only thing that happens is that a game will launch faster and levels, maps, or charts will load faster. If you participate in online gaming, then the ssd will not improve anything. You'll still be at the mercy of your Internet Service Provider.
A few weeks ago Tom's Hardware published "SSD Performance In Crysis 2, World Of Warcraft, And Civilization V". It is an analysis of ssd's and gameplay. Here is the link:
http://www.tomshardware.com/reviews/ssd-gaming-performance,2991.html