I am running a system with 3 GB Ram, a Pentium D 3.0 GHz and a GT 430. I just recently upgraded the GT 430 from a 6800. I mainly did it just to play TF2. I don't really need it to do a hell of a lot more. If it could play Black Ops, that would be great too. However, I am getting about 30 FPS @ 1440x900 in TF2 which I don't think is right at all. My system is way above the rec. specs for TF2 and there are videos of it being played with the GT430 all over youtube.
Is my proc bottlenecking the card and causing the low FPS? Any suggestions? Thank you.
Your CPU will be a significant bottle neck. You will need to upgrade to get the performance that you want. The minimum specification I would recommend would be the i7 Lynnfield. For new gear a Sandy Bridge i5 with 4 GB RAM will see you right.
Pentium D is a very weak CPU for gaming. I also had it, i am going to replace with i5 2400. If you want to pay less then go with a i3 2100 at least. It will increase FPS for sure and there wont be any bottleneck.