That GT 430 is cheap, but weak. Yes, you'll be able to play TOR, but my guess is barely. A GTS 450 will cost roughly twice as much, yes, but it will give you roughly double the performance or better, and you might not have to upgrade your power supply since it only draws around 100 watts. They go on sale pretty regularly, so you'd be able to get one for $75-80.
If you play the KotOR games I would stick with Nvidia.
"They should rename the team to the Washington Government Sucks. Put Obama on the helmet. Line the entire walls of the stadium with the actual text of the ACA.
Fix their home team score on the board to the debt clock, they can win every game 17,000,000,000,000 to 24. Losing team gets taxed by the IRS 100%, then droned."