My CPU is a Q8200 @ 2,33 GHz
RAM: 6gb
C2 runs with about 37-45 fps with Extreme settings, 60fps in very high. (Both with VSync activated. Without VSync the fps probably would be higher)
actually I'm playing with very high settings, but I'm additionally using autoexec.cfg which decreases the fps a bit (about 10fps less, at lighthouse with the water logically more loss of fps).