[iLinx]

If you want to increase fraps performance you need a better cpu, or really its dependent on the system. I have a C2D aswell and I run anything on top settings fine, fraps drops that to like 10fps however. Try checking your system resource usage while running fraps in a game and while not running fraps, if you find theres a cpu spike (most likely) then upgrade your cpu or overclock it, else upgrade your graphics.

I wouldn't say its ram, unless your using 95% before fraps.