I don't think there are FPS caps but Soldier front and Crossfire are 2 different games. You can tell just by the graphics so the FPS count could be different.
ohh. ur question is simple sf gots sf cap. its lax 33 or 32 ish so yeahh.
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SF Cap is a permanent 32. Your frames can't get anymore extreme. G4Box didn't put a cap on their game (Cross Fire). There is NO way to uncap this. Just get used to the frames and it will be fine*.
*Note : If you're going to record your gameplays via Fraps, becareful. When your FPS drops below 20, while RECORDING with FRAPS, you're client will shadow(Basically means your character will keep walking or running for a few seconds even when you take your hands off the keyboard) your character and/or weapon.