okay, I want to buy a new laptop. I have some choice, all have intel core i3 and 3Gb DDR3 but VGA was differences. That is ati radeon HD 5470 512 Mb, ati radeon 6470 1Gb, nvidia GT 310M 512Mb, nvidia 320M 512Mb. Which the best option to play empire total war? xbox 360 emulator and others latest game?