If you want to add another 470 Joe down the line you will need a more powerful powersupply to run both cards together. i think an 850W would do it.
http://www.overclockers.co.uk/showproduct.php?prodid=CA-013-CS&groupid=701&catid=123&subcat=1084
but if you dont and you only want one 470 until u get a faster card "wayyy" down the line then keep the powersupply u have selected.
looking at the games you play i dont think sli would come into things. but who knows wot games ull be into in a year
http://www.overclockers.co.uk/showproduct.php?prodid=CA-013-CS&groupid=701&catid=123&subcat=1084
but if you dont and you only want one 470 until u get a faster card "wayyy" down the line then keep the powersupply u have selected.
looking at the games you play i dont think sli would come into things. but who knows wot games ull be into in a year
