If you're looking to lower the price without affecting the performance, take a look here. You'll see the i3-4340 is within 5 fps of the i5-4670, and should therefore be directly comparable, if not better than, the i5-4430. Remember, the i3s have HT, which does make them more than a simple dual-core; they can run 4 threads, and when that's combined with the higher base clocks the best i3s can match or beat the weaker models of i5 (such as the i5-4430 you're looking at) in gaming performance, and aren't much weaker than the stock-clocked high end of i5s.
http://3-ps.googleusercontent.com/h/www.hardcoreware.net/wordpress/wp-content/uploads/2013/12/570x421xbattlefield-4-fps2.png.pagespeed.ic.1d8vhdafmu.png...