Quick Question on CPU and this Game

I have read both minimum and maximum requirements for this game. My video card, DVD drive, and memory more than meets or meets the recommended hardware specs.

However, my system is a socket 939 and the CPU is dual core 3800+ @2.0 MHz.

* Do you think I should run this game at decent framerates or will my cpu cause lagging. My screen resolution will be 1280x1024.

Thanks.