This is why I wish everyone would put demos out for a release. Yeah demos run a little rougher but you can play it to see how you like the game AND see if it runs ok on your system. It is hard to mix and match minimum hardware requirements. If you have a quad core and 6GB of RAM, then that is a leg up from the dual core and 2GB RAM so can you eek out decent FPS with a 4350? Probably but by how much...who knows.
I would bet that after the release, they open the beta up as an official demo. They have done so for BF2 and BF2142 and EA is trying to compete like crazy against COD.
Duster, you could try to register for a Beta key on the EA site. Maybe you can get access and try it out.