i own 9400gt 1gb ddr2
i can play nfs shift all high resolution 1024 * 768 and anitialising off
card is good for low budget
if you can spend more buy 9600gt
and dont see the memory generally many people think more memory means more the speed it not actually with the graphic card
Yes, u are right, more bigger memory doesn't mean better performance, yes but just a little...
NFS is relatively an easy game for GPU, and with only just 1024x768 then 9400GT is just enough as u said before, but the newest games right now are asking higher specs requirement to be played, so 9400GT DDR2 is not good, go with at least 9800GT...