M18x R2, Cache and Crossfire setup

I was told when I ordered my M18X that I should save my money and go with a smaller caching SSD of 32MB, I originally had a larger SSD planned.

I thought this sounded good as the system would auto cache in the 32GB SSD which sounded like a great plan according to the description of the sales tech.

I received my M18X last night, and it is awesome !!  I just need to get things setup to work as advertised.

1) I am not seeing anything being written to the "caching" 32GB SSD , what do I need to do to setup this auto caching mechanic that I was sold on ?

2) I am not entirely sure if my Dual AMD 7970 Graphics cards are truly working in Crossfire mode.  I went into the Catalyst Setup app which I updated from AMD as the original was old and had major Jitter problems when running World of Warcraft.   However when running World of Warcraft on Ultimate Settings I am getting 25 to 60 fps.  I thought it should hold solid at 60 fps (as that is the refresh rate of the M18X display.  is there a way I can run a bench test to insure my system is setup and running as it should ?  

Thank you very much for your help,

Dale