Re: Which Graphics Card
ATI and Nvidia have there perspective attributes.
It depends on the chipset that most games are built to optimize, it's a monopoly with cards. You can check a few other websites that actually benchmark the performance of each card respectfully.
As far as AMD or Intel, that is, once again, personal preference and performance.
If your going to do dual core, I'd select an intel board that will support quad core processors. Start with a core 2 duo those have come down in price after awhile. I'm sorry your forced into buying a 2.0 card, there isn't enough bandwidth from the graphics card to take advantage of the latest and lamest of technologies.
Look at the core 2's, uhm, why a 650? 600w is good enough, 500 would be good enough. Are you overclocking? Etc? Those are some good questions to ask yourself with a power supply and your boards.
i5 2400 @ 3.10Ghz | 16GB RAM | 500GB + 1TB | GTX 750Ti