Well, judging by the fact that you have a quad core 3.8GHz processor, 8 GB of RAM, and 2 GB of VRAM, I imagine you should be fine to run most, if not all, of your games. However, if you want to check on a game by game basis, this is a helpful little website that I've found. It checks your specs against the minimum and recommended requirements for a long list of games in their database. Can You RUN It | Can I run that game | Game system requirements

If you have plenty of power to spare, you should be fine to run it with Fraps.