Doesn't mean your GPU is good enough
-Or maybe you're having WAY to little ram.
I do wonder why it needs 6 GB RAM and only uses like 3.5 GB RAM....
Because the game has very little optimization for the PC. Now remember, R.A.M is randomly accessed by the CPU and GPU. Maybe they thought their Counter-Strike 1.6 looking game would require that much R.A.M.