I posted the results of the PassMark benchmark, looks like the 240 is 10% faster. Neither of those is good for gaming, as you can tell by their overall ranking among video card models of 115th and 136th.
I have a GT430.. I was comparing because one of friends got GT240.. We both want to play crysis 2 but i already know none of us can't play with even all medium settings.. So i wanted to check that is there any difference in performance..